Yosemite decimal system explained. For example in the YDS there's 5.

Yosemite decimal system explained. Here's how to read it and pick the route for you. In the 1930s they Scott Johnston describes how the Yosemite Decimal System works, and it's origins. 8 and a 5. Elevate your next outdoor journey! First, How Does The Yosemite Decimal System Work The 5. May 15, 2024 · The American Yosemite Decimal System has a number 5 as its prefix, followed by a decimal point and a number that starts from 1, and increases as the difficulty increases. Aug 30, 2021 · For all intents and purposes, F7c+ = 7c+. This article breaks down how these systems compare, why they don’t line up perfectly, and what it means for your climbing. Apr 5, 2023 · So why the need for this new tool? The French System and Yosemite Decimal System are linear. The scale starts at 5. Jul 8, 2024 · The Yosemite Decimal System Most rock climbs over 20 feet tall in the U. Grade 1: level ground Grade 2: steep ground, do not need to use handholds Grade 3: very steep ground, use of occasional handholds required, a fall could result in serious injury or death Aug 19, 2023 · Most mountain-climbing routes are rated according to the technical difficulty of their climb using the Yosemite Decimal System (YDS). rock climbing grades. Originally known as the Southern California or Wilts-Sierra system, it eventually became cemented as the Yosemite Decimal System, despite its inception outside of Yosemite. Developed in the 1950s in Yosemite National Park, this system was created by rock climbers to standardize ratings for various routes. 4- to 5. The idea of climbing grades is fairly straightforward, but when applied to bouldering, sport climbing, alpine, ice, trad, or mountaineering, the grades change based on the local climbing Feb 19, 2021 · In addition, the Yosemite Decimal System includes an optional Roman numeral grade that describes the overall length and “commitment level — or seriousness — of the route. The YDS originally consisted only of the class rating and this is the most widely used rating. . Feb 9, 2023 · the Yosemite Decimal System (YDS) An additional system comes into play to more finely describe the difficulty of fifth class routes. The system in use in Yosemite is called the Yosemite Decimal System (YDS). 8-, 5. something Grades 1 to 4 refer to walks of increasing difficulty, by the time you reach 5 you are assumed to be scrambling over rocks which equates to about 5. The system uses classes ranging from 1 (easiest) to 5 (most difficult), providing a basic difficulty of the terrain you will encounter along the route. Yosemite Decimal System (YDS) Read: 56 Highest Mountains To Climb in the US for Beginners and 27 Highest Mountains To Climb in North America for Beginners The YDS has a class rating and an optional grade and protection ratings. Free climbing grades are generally understood to reflect the hardest move or section on a particular route. If you take away the handrail on an outside stairway, it is fatally exposed but still only class 1 in either system. 10 doesn't exist and any grade that has - is a/b and + is c/d and outside of that everything else will be a,b,c,d. All rope climbs start with a “5” which signifies that it is a rope route. Some gyms use the classic V-grade system, marking each boulder problem with a V-grade on a tag or piece of tape at its start. The American YDS (or 'Yosemite Decimal System') was developed independently by climbers at Tahquitz Peak who adapted the class 5 rating of Sierra Club Class 1–5 system in the 1950s. Jun 16, 2025 · In North America, that language is the Yosemite Decimal System (YDS), which classifies terrain difficulty. This renowned grading system, initially developed in the rugged landscapes of Mar 30, 2023 · Gym Grading: Gyms in North America use the Yosemite Decimal System for route grades. Sub-Grade (Yosemite Decimal System). This guide explains the different grading systems used in rock climbing and offers tips to level up your skills. It covers the Yosemite Decimal System, bouldering V-scale, PG/R/X rating, and why grade opinions In North America we created these classes from the Yosemite Decimal System- this grading system was initially created by the Sierra Club in southern California in the 50’s. In the Alpine region, the UIAA and French scales are the most common ones. Nov 13, 2023 · The Yosemite Decimal System (YDS) is a grading system used to rate the difficulty of rock climbs, snow climbs, and alpine routes in North America. D. 8, 5. 12a (7a+), for example, is the same as the difference in difficulty between a 5. Later, both climbers went on to climb prolifically in Yosemite making many famous first big wall ascents, breaking many of the technical barriers in the sport, and establishing important ethical guidelines for climbers. 0 to 5. Scrambling is often referred to as class 4. 0 (class + difficulty) and currently goes up to 5. There are many other systems: the National Climbing Classification system (NCCS), the British System, the Austrian System, the French System including the French Adjectival System (IFAS), the Soviet, West German and the European System. ). The Yosemite Decimal System (YDS) is a five-part grading system used for rating the difficulty of rock climbing routes in the United States and Canada. Although YDS is mostly used in the United States, YDS classes are mapped to other national and Yosemite Decimal System The 1-5 hiking classes are part of the Yosemite Decimal System and was created in the 1950s by members of the Sierra Club who wanted a way to communicate and assess the difficulty of routes in their mountaineering efforts. I cover the meaning behind the Yosemite Decimal System (YDS Yosemite Decimal System of Grades- The American system of climbing grades is modeled after the Yosemite Decimal System (YDS), which classifies the difficulty of climbing from class 1 (hiking) to class 5. Especially climbing grades. After 5. The Yosemite Decimal System describes routes by Class (difficulty), Grade (length), and Protection (safety). In the United States, we use the Yosemite Decimal System (YDS). Converting between them is no cakewalk, and figuring out which system applies to what type of climbing adds another layer of confusion. Yosemite Decimal System In the United States, the most commonly used grading system is the Yosemite Decimal System (YDS). The Yosemite Decimal system excels at differentiating how hard various technical climbs are, but it often fails to accurately describe mountaineering climbs. Following is a breakdown of the classes: Class 1 - Hiking on a maintained trail. 11d (7a) and 5. The Sierra Club initially developed the system in the 1930s to grade hikes and climbs in California’s Sierra Nevada. Let’s break down this system to better understand what it all means! Information about the Yosemite Decimal System (YDS) in American rock climbing, examining its history, and the meaning of the various grades and modifiers. , you can find YDS grades all around the world. Different countries use different systems, and the US and Canada have been using the Yosemite Decimal System since the 1950s. Yosemite Decimal System, French, UIAA, British UK, British Trad Grade, and Australian. Similar to the distinctions between the metric system and the US The Yosemite Decimal System has quite a bit of history to it, which explains why it has a bit of an oddball scale where the difference between a 5. The difficulty of a rock climbing grade is typically classified using one of three different systems: the Yosemite Decimal System (YDS), the French Adjectival System, or the British Technical Grade (TG) system. Confusingly though, European sport climbers use the French sport climbing system which, just like Font Bouldering Grades, ranges from 1 – 9 and uses a,b and c as well as ‘+’ to signify a slight increase I've always found that the French grading system doesn't really have a 1-to-1 translation to Yosemite decimal system. Technical Rock Climbing Grades The Yosemite Decimal System (YDS) The Yosemite decimal system (YDS) is a system that evolved over many decades and was initially codified by the Sierra Club in California. Jan 6, 2024 · Yosemite Decimal System (YDS), Font, French, Alpine, British Trad, British Tech—the list goes on. But grading systems aren’t always exact. Class 1 routes, the easiest, are hiking trails without scrambling or climbing involved. Sep 11, 2015 · An explanation of the different classes of the Yosemite Decimal System (YDS) esp as it applies to hiking. United States Yosemite Decimal System (YDS) is a grading system commonly found in the United States, starting with a 5. Some may occasionally need their hands. On this one, they've stuck 5a on the line between 5. Apr 27, 2025 · If you’re trying to figure out how the 7A bouldering grade compares to the V Scale or the Yosemite Decimal System (YDS), here’s the quick answer: 7A roughly equals V6 and 5. [1] It was first devised by members of the Sierra Club in Southern California in the 1950s as a refinement of earlier systems from the 1930s, [2] and quickly spread throughout North America. A YDS grade is split into two numbers separated by a period and looks like this: Class All climbing grades begin with the number five. 14a in sport climbing grades In this article, you’ll see how these systems compare, why the conversions aren’t always perfect, and how to use Below you'll find a comprehensive explanation of the different climbing rating systems. Comparing these scales is somewhat akin to comparing sprinting to a marathon; while both are running, the skills and attributes required are quite different Yosemite Decimal System The Yosemite Decimal System (YDS) is a system that is used to rate the difficulty of walks, hikes, and climbs. It is not the only rating system used by climbers, but it is the one preferred by most of the people who use Climber. The Yosemite Decimal System (which is the one that's mostly used in the US, and the one you'll see around here most often - it's the 5. Soon enough this became the standard for all trails and climbs all across North America. 12c. While it is primarily used in the U. Depending on the country and region, climbing routes are rated according to different difficulty scales. 8+. Route setters and those who rate climbing routes have decided on this system in order for climbers to have a good sense of what a route might expect of them before climbing. It was devised by the Sierra Club and comprises three parts that rate the difficulty level of walks, hikes and climbs. 10c/d Isn't the Yosemite decimal system great?! This works but I would even take it a step further and say 5. Class 3 - Moderate scrambling. 9 is approximately the same jump in difficulty between a 5. 12a one) grades only the hardest move, but it's often supplemented with a PG/R/X to indicate the seriousness. Oct 20, 2021 · The Yosemite Decimal System is the dominant free climbing grading system in the U. The climbs are between 50feetand100feetft (andft) in length, and range in difficulty from beginner to expert (5. 10 it also adds a letter from a to d, thus dividing every difficulty into 4 subgrades. That’s because it actually originates in Tahquitz. To help make everything easier, I’ve broken the entire Dec 30, 2024 · Learn how to use the Yosemite Decimal System hiking guide to choose the right trail and prepare for your adventure. Be sure to check i The YDS Classification System The most common and widely accepted rating system for climbing route difficulty rating is the Yosemite Decimal System (YDS). The four easier classes describe everything from a walk on flat ground (Class 1) to a technical scramble (Class 4). According to two contributors, the european rating system is less useful because it is too subjective and the alaskan rating system is more useful because it is less subjective. May 5, 2024 · The Yosemite Decimal System (YDS) is used in the United States to determine the risk, difficulty, and commitment associated with rock climbing. It was developed in the 1950’s by members of the Sierra Club, used to describe local hikes. Apr 27, 2025 · If you’re trying to understand how 8A in the Fontainebleau grading system compares to the V Scale or Yosemite Decimal System (YDS), here’s your quick answer: 8A on the Fontainebleau scale equals V11 on the V Scale 8A also translates to about 5. Using this system, climbs will be labeled with numbers beginning with 5 and followed by a decimal, for example, 5. But before we get into the actual Aug 18, 2017 · YDS stands for the Yosemite Decimal System and it is a grading system for hiking, scrambling, and climbing. The Wikipedia description may be found here. The Yosemite Decimal System (YDS) is a scale used to rate the difficulty of hiking and climbing routes. Class 2 routes include simple scrambling, class 3 routes, rise to advance scrambling, and very simple climbing. Jul 26, 2020 · In this short tutorial for rock climbing beginners, I explain how to read, understand, and interpret rock climbing grades or ratings. and parts of Canada. 10b. 요세미티 십진법 등급 체계는 1급~5급까지는 가끔씩 손을 써서 오르는 정도의 난이도를 优胜美地攀登难度等级 （英语： Yosemite Decimal System），直译为 优胜美地十进制系统，常用缩写“ YDS ”标示，是一种在美国登山界普遍用来衡量 徒步 、 健行 、 登山 、 攀岩 等各种 攀登路线难易度等级 的系统，主要由三个部分组成。1937年 南加州 的 山峦俱乐部 将德国的 Welzenbach 攀登难度系统 優勝美地攀登難度等級 （英語： Yosemite Decimal System），直譯為 優勝美地十進位系統，常用縮寫「YDS」標示，是一種在美國登山界普遍用來衡量 徒步 、 健行 、 登山 、 攀岩 等各種 攀登路線難易度等級 的系統，主要由三個部分組成。1937年 南加州 的 山巒俱樂部 將德國的 Welzenbach 攀登難度系統引進 在20世纪30年代，美国的SIERRA CLUB制定了一个难度系统，也就是现在的约塞米提难度系统（Yosemite Decimal System）（以下简称Y. Developed by the U. Many parks and forests use this system as a standard rating scale. Scrambles in the UK are graded from 1-4, with 1 being moderately difficult and 4 being extremely difficult: It boasts splitter cracks, dihedrals, and crystal pinching slabs. Introduction to YDS Embark on your climbing odyssey with a solid understanding of the Yosemite Decimal System. Jun 23, 2024 · Indoor Climbing Grades Explained Are you new to indoor climbing and feeling overwhelmed by all the different grading systems? Understanding climbing grades is essential for tracking your progress and choosing appropriate routes. 11 term originates from the Yosemite Decimal System, a system used to rate the difficulty of climbs, walks, and hikes. Class 5 (technical climbing generally requiring rope & gear) has the most extensive array of subdivisions. The classes describe the routes in terms of what a "typical person" would need to do in order to negotiate the route (walking, use of hands for balance, use of hands for upward and downward movement, etc. Many countries of the world, though, use the American YDS (Yosemite Decimal System). Jul 6, 2023 · Originally developed in the 1950s by the Sierra Club, the Yosemite Decimal System (YDS) has become the go-to rating system for hiking and climbing routes in the U. The system was first developed in the 1950s at Yosemite National Park in California and has since become widely used around the world. Feb 12, 2019 · Let’s talk about about the Yosemite Decimal System also known as YDS. 9 are subdivided into a, b, c, and d. The Yosemite Decimal System is used mainly for rock climbing, but it is also widely used in hiking. Includes examples of the different grades, links, multimedia, pictures, photos, and video Learn about climbing and bouldering ratings, including how route difficulty is measured and the difference between a rating and a grade. The Yosemite Decimal System The YDS is a grading system used to rate the difficulty of climbs in rock climbing, mountaineering, and similar outdoor activities. A fun and informative tutorial on U. 0 through 5. In the early 20th century, the Sierra Club was less environmental group and more mountaineering club, specifically for the Sierra Nevadas. The rope grading system at Velocity Miami is based on a simplified version of the Yosemite Decimal System (YDS). Mar 30, 2023 · 요세미티 십진법 등급 체계 (YDS, Yosemite Decimal System)는 그동안안 쓰여왔던 기존의 난이도 등급에 5. Jan 28, 2022 · For most of the climbing world, though, the benefits of climbing grading systems greatly outweigh the few disadvantages. The 7a to V Scale Conversion Explained By the end of this video, you will have a full understanding of the difficulty grading in rock climbing. Nov 1, 2024 · The Yosemite Decimal System (YDS) is a grading scale that evaluates the difficulty of hiking and climbing routes, especially for mountaineering and rock climbing. Look up the Yosemite Decimal System (YDS). 12d (7c) and 5. Apr 13, 2025 · In this comprehensive guide, we’ll delve deep into the various grading systems used across the globe, how they compare, and what they mean for climbers of all levels. 9, but grades above 5. It's the system used to grade the technical difficulty of rock climbs. Definitions for Mountain Scrambler Ratings To distinguish the difficulty of non-technical mountain climbs more clearly, the ratings framework for mountain scramblers divides each of the four, non-technical Yosemite Decimal System (YDS) categories into three parts and expands the scope of the ratings. Oct 12, 2020 · What are Common Sport Climbing Grades? The grades that you’ll see listed in guidebooks or at climbing gyms vary depending on where in the world you are. In this article, we will break down the various grading systems used in indoor climbing, including V-scale for bouldering and Yosemite Decimal System (YDS) for roped Jun 4, 2015 · The Yosemite Decimal System is a scale for rating the difficulty of trails and climbing routes. 15. S. Are bouldering routes graded the same as roped routes? Are V Grades and Hueco Tanks Grades the same? I asked all these questions and more! Compare sports climbing grades across different systems. YDS Explained There’s a whole classification. 12c, for example. May 4, 2020 · The American system of climbing grades is based off the Yosemite Decimal System (YDS), which ranges from class 1 (hiking) to class 5 (technical rock climbing). This system provides a class number and then a specific grade. Jul 20, 2020 · In the U. 12+ on the Yosemite Decimal System). You only get into hard or easy number for grades without a letter so 5. This system then assigns an additional number from 1 to 15 to a climbing route based on its overall difficulty, encompassing factors like technical difficulty, strength requirement, endurance and mental The Yosemite Decimal System (YDS) was developed by the Sierra Club in the 1930's to describe hiking and climbing routes. Jul 1, 2025 · Unlock the Yosemite Decimal System: Learn how YDS grades transform your hiking, scrambling, and climbing adventures across America's wild trails. In bouldering, it generally addresses the ease or challenge of the ascent. YDS mainly applies to roped climbing but gives context for overall climbing difficulty. 13a (7c+). 11b. May 2, 2023 · The Yosemite Decimal System or YSD is a grading system used for hikes and sport climbing. This system is divided into five classes: Feb 28, 2023 · Climb better by learning climbing grades. Class 14ers. Keep in mind of course, that climbing grades are subjective. 0. This system uses “classes” rather than descriptive indicators of how difficult a hike is. The other system you'll see around here a lot is the V-grade system used in bouldering. The system ranges from Class 1 (easy walking) to Class 5. From the Yosemite Decimal System (YDS) to the Fontainebleau grades, this article will serve as your go-to reference for decoding climbing difficulty. Jun 10, 2024 · 🧗‍♂️ Sports Climbing Grade Converter Convert from French to Yosemite Decimal System and more. 1. It was mainly invented for climbing and mountaineering. This is the class. YDS is the dominant classification system in the United States and parts of Canada. The first number in the Yosemite Decimal System (YDS) refers to the class of terrain: Class 1: walking or hiking; Class 2: some scrambling and use of hands; Class 3: heavy scrambling; Class 4: heavy scrambling with a lot of exposure, falls could be fatal; Class 5: technical, roped, rock climbing. ），这个系统分为6个级别，如下所示： The “American” grading system, or “Yosemite decimal system” (YDS) starts with grades 1-4 before you get to grade 5, which is technical rock climbing. It is used mostly by mountaineers in the United States and Canada. While the YDS ratings only address the difficulty of the hardest section of a route, Mountain Jul 25, 2022 · The Yosemite Decimal System, also known as YDS, is used to determine hiking difficulty and sport climbing routes based in North America. The Yosemite Decimal System is a set of numeric ratings describing the difficulty of climbs. Org. This scale helped them to define the level of different trails in Yosemite Valley. For example in the YDS there's 5. 9 and easier you would have 5. 15 (extremely difficult rock climbing), with bouldering problems usually Jun 23, 2024 · The IFAS grading system is often compared to the Yosemite Decimal System (YDS) used in the United States and the British grading system used in the UK. The YDS Yosemite Decimal System rates mountain activities (hiking and rock climbing) as class 1 to 5, in increasing order of difficulty. Oct 23, 2023 · Climbing Grades Compared to Bouldering Grades The V-scale, used for bouldering, and the Yosemite Decimal System (YDS), used for route climbing, represent two distinct grading systems tailored to their specific forms of climbing. 6, 5. For Roped Climbing (longer, taller climbs), we use the Yosemite Decimal System (YDS): It starts around 5. The E grade system has been criticized in recent years for being non-linear, especially in the upper grades where a wide range of difficulty Mar 31, 2016 · Find rock climbing routes, photos, and guides for every state, along with experiences and advice from fellow climbers. The system has three parts. -based Sierra Club in the 1950s, the YDS unified and refined previous climbing grade systems from the early days of Yosemite Valley climbing. 11a, etc. In Jul 5, 2025 · Understanding the Yosemite Decimal System: A Guide to Rock Climbing Grades in North America. This system has five levels, ranging from accessible dirt paths to rock climbing that requires some technical gear. A. 5 for beginner-friendly climbs and goes up to 5. So, what are scrambling grades? Scrambles in North America are graded on the Yosemite Decimal System, ranging from Class 1 (Easy Hiking) to Class 5 (Rock Climbing). If you are climbing in the US, you will see the Yosemite Decimal System (YDS), but if you’re climbing pretty much anywhere else in the world, you’ll see the French Scale. While the YDS ratings only address the difficulty of the hardest section of a route, Scrambling Ratings also Apr 27, 2025 · Trad & Sport Climbing Grades Yosemite Decimal System (YDS) The Yosemite Decimal System or YDS is a grading system commonly found in North America and was originally used to describe a full range of backcountry travel, which included both hiking and climbing. Nov 9, 2018 · When I first started climbing, I was pretty much clueless about everything. As a result 5. com uses the Yosemite Decimal System (YDS) which has been in use in the United States for over 75 years. For bouldering, on the other hand, there are varying systems in place. The system is mainly used for mountaineering in North America and was initially developed by Southern California’s Sierra Club. Mar 20, 2017 · In North America we use the Yosemite Decimal System to define the class of a climb. Jun 5, 2023 · The Yosemite climbing scale was developed by Royal Robbins, Don Wilson, and Chuck Wilts in Southern California in the early 1950s. Jun 14, 2022 · As with rock climbing, different hiking trails are assigned different levels or grades to help classify their difficulty. 6 or 5. The system was developed in the 1930s and has since become the standard grading system used by climbers in the United States. Ratings used internationally today include no less than seven… Yosemite Decimal System (YDS) Yosemite National Park has developed its own difficulty rating system. But in general, for the yosemite decimal system and I believe for most other grading systems it's "step" is equal in difficulty. Also there are plenty of 5. Definitions for Scrambling Ratings To distinguish the difficulty of non-technical mountain climbs more clearly, the Scrambling Ratings framework divides each of the four, non-technical Yosemite Decimal System (YDS) categories into three parts and expands the scope of the ratings. The Yosemite Decimal System (YDS) is a three-part system used for rating the difficulty of walks, hikes, and climbs, primarily used by mountaineers in the United States and Canada. It was first devised by members of the Sierra Club in Southern California in the 1950s as a refinement of earlier systems, particularly those developed in Yosemite Valley, and quickly spread throughout North America. There are many factors which influence the ratings, such as the difficulty, time commitment, length of climb, and risk. Oct 27, 2017 · 5. Yosemite Decimal System (YDS) — 5. Sep 16, 2021 · Everything you ever wanted to know about bouldering grades in one place, including a bouldering grade conversion chart from the V Scale to Font Scale. There is an unofficial Class 6 which generally means “utterly unclimbable free solo, requires aid &/or ladders”. 10+ = 5. As a beginner rock climber or foreign climber trying to climb in America, you'll want to become familiar with the Yosemite Decimal System, or YDS. 8 and 5. are graded using the Yosemite Decimal System (YDS). This section breaks down the specific classes relevant to this pursuit—2, 3, and 4—so any scrambler can understand precisely what to expect when they venture off the beaten path and match the climbing route to their skill level. While all three systems aim to provide climbers with a consistent way to assess the difficulty of climbs, there are some key differences. Oct 15, 2021 · What Is the Yosemite Decimal System? The Yosemite Decimal System (YDS) is a method for rating the difficulty of walking trails and sport climbing routes. 10 등급이 추가된 것으로서, 이로 인 해 그동안 엄격하게 지켜져 오던 십진법 체계가 없어졌다고 할 수 있습니다. It’s designed to classify trail difficulty ranging from simple, well-maintained trails to technical climbs needing specialized climbing skills and equipment. The Yosemite Decimal System (YDS) is a rating system used by rock climbers to choose appropriate climbs that are challenging, within their abilities, and to bring proper gear. The exact definitions of each of the classes are not fully agreed upon, but the general canyoneering interpretation is included below. 11a is easier than 5. I didn’t know the difference between Sport grades and the Yosemite Decimal System. Apr 29, 2024 · The most common free-climbing grading scales are the French, US or Yosemite Decimal System, and the UK scale. Jun 24, 2020 · The United States and Canada widely use the Yosemite Decimal System to rate the difficulty of hikes, trail runs, and climbs. If you enjoyed this clip, you will love the full episode. May 31, 2020 · The Climbing Grading Systems Yosemite Decimal System (YDS) Climbers are not always known for their naming prowess, and the Yosemite Decimal System was a misnomer from the start. The scale ranges from 1 to 5, with vertical pitches ranking at a 5-level difficulty with a decimal addition. 10a and a 5. Canyoneering: Canyoneering ratings are based on a numerical system similar to the Yosemite Decimal System, but they range from class 1 to 4, which provides an initial indication of the technical difficulty and required gear for the descent. The YDS was developed in Yosemite National Park in California (technical rock climbing). 15 for pros who apparently have no fear of heights or pain. , the Yosemite Decimal System is the most commonly used rock climbing ratings system. 9 and have pushed 6a to 10b. This video explains the Yosemite Decimal System for Rope Climbing, the V Scale for Mar 17, 2023 · For starters, North American sport climbing uses the Yosemite Decimal System (YDS) which is entirely different from the V-scale system. 5 climbs, you just need to get out of the gym. [4] So, what are the mountaineering grading systems? The main mountaineering grading systems including the French Mountaineering Grades (going from F “easy” to ED “Extremely Difficult), the Yosemite Decimal System (going from Class 1 to Class 5 terrain), and the National Climbing Classification System (going from Grade I to Grade VII). The difference in difficulty between a 5. The Yosemite Decimal System is the most commonly used grading system for sport, trad, and The Yosemite Decimal System consists of five general classes, but only the fifth is used for grading climbing routes. Class 2 - Easy scrambling. kgw jlcxk zljms vio ldhjj mvxxmwv limki fbnv qwic emlc

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