Climbing grades are subjective, so difficulty is determined by consensus.<\/p>
The first climber or team to complete a route has the first opportunity to assess its difficulty.<\/p>
Thereafter, several other climbers (after completing the route) typically participate in the evaluation.<\/p>
Finally, they reach a consensus on the route’s difficulty.<\/p>
II. Glossary<\/strong><\/strong><\/p> III. Climbing Rating Systems<\/strong><\/strong><\/p> The two most commonly used climbing rating systems are the French Numerical System (FR)<\/strong> and the Yosemite Decimal System (YDS)<\/strong>.<\/p> 1. French Numerical System (FR) \u2013 e.g., 6a, 8b+<\/strong><\/strong><\/p> The French Numerical System is the primary rating system for free climbing outside North America (abbreviated as FR below).<\/p> FR evaluates climbing levels based on the overall technical difficulty and intensity of the route.<\/p> Ratings start at 1 (indicating very easy) and have no upper limit.<\/p> Grades at level 5 and above can be further distinguished by adding lowercase letters a, b, or c.<\/p> Additionally, a “+” can be added to indicate more sustained difficulty (6a+ is harder than 6a but easier than 6b).<\/p> Currently, the world’s most difficult route grade is 9c.<\/strong><\/p> 2. Yosemite Decimal System (YDS) \u2013 e.g., 5.6, 5.11a<\/strong><\/strong><\/p> YDS is the primary rating system in the United States and parts of Canada.<\/p> Developed by the U.S.-based Sierra Club in the 1950s, YDS unified and refined the early climbing systems in Yosemite Valley. YDS classifies technical difficulty into five categories:<\/p> Class 5 ratings start at 5.0, representing a low-angle slope requiring minimal skills.<\/p> 5.15 is currently the most difficult grade.<\/p> The official description of 5.15 terrain is: “Extremely difficult, typically involving cliff faces or overhangs, requiring excellent expertise, physical conditioning, and technical proficiency.”<\/p> Only exceptional climbers can handle 5.15 difficulty.<\/p> For slopes rated above 5.10, letters a to d may also be added during rating.<\/p> For example, a route or rock slope rated 5.10a is easier than one rated 5.10b.<\/p> 5.13 is harder than 5.12d but easier than 5.13a, and so on.<\/p> Note:<\/strong> A route’s technical difficulty does not determine the objective risk for climbers.<\/p> Risk depends on various factors, including the quality of climbing hardware, rock conditions, and runout (the distance between anchors or gear placements).<\/p> IV. NCCS Time Grades<\/strong><\/strong><\/p> In the United States, there is also a system for measuring the “time” required for a route. The National Climbing Classification System (NCCS)<\/strong> time grades rate routes based on the average time a team spends on them:<\/p> V. Other Rating Systems<\/strong><\/strong><\/p> Free climbing is not the only form of climbing with difficulty ratings. Ice climbing and mixed climbing also require grading systems, which we briefly introduce below.<\/p> 1. Ice Climbing Grades \u2013 e.g., WI3+, WI6<\/strong><\/strong><\/p> 2. Mixed Climbing Grades \u2013 e.g., M1, M8<\/strong><\/strong><\/p> Mixed terrain grades range from M1 (low-angle terrain, usually requiring no ice tools) to M12 (steep terrain with gymnastic moves on fragile holds). Grades M13\u201316 are generally considered speculative.<\/p> VI. Rating Applications<\/strong><\/strong><\/p> In our climbing stories, you will never see French numerical grades below 1 (5.0 YDS), as these represent very easy climbs.<\/p> You may see 6b+ (5.10d YDS), meaning the climb is above intermediate level and within the capability of an experienced, physically fit climber with technical knowledge.<\/p> 8a (5.13a YDS) and above are considered advanced climbing, with 9a (5.14d YDS) being the international standard for excellent free climbing. Many Olympic-level climbers can handle 9a or harder routes, but this is rare for non-professional climbers.<\/p> VII. Conversion Table<\/strong><\/strong><\/p> Need to know how FR ratings convert to YDS? Below is a comprehensive conversion table for the 10 most common rating systems.<\/p> (Note: “French” in the table refers to the French Numerical System, and “USA (Sierra)” refers to the Yosemite Decimal System.)<\/p> In some of our previously shared climbing stories, terms describing route grades such as 5.13b, 8a+, WI3, and M9 often<\/p>\n","protected":false},"author":15,"featured_media":11270,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[106],"tags":[259,264],"class_list":["post-11269","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-expert-advice","tag-newbie-guide","tag-safety-knowledge"],"yoast_head":"\n![\"\"](\"https:\/\/aokwit.com\/wp-content\/uploads\/2025\/06\/1631590985514-800x800.jpg\")
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