Climbing and Bouldering Grades Converted | Trail & Crag
Route grade vs boulder grade – a data-based analysis
Claus Wilke on Twitter: "Correction: 5.9 was meant to be the most difficult grade possible. 5.10 is even more difficult. https://t.co/IQG9opvCuy" / Twitter
Routes | Adventure Rock - Climbing | Yoga | Fitness