AscentStats
Welcome to AscentStats
We build statistical models and software tools for climbing analytics.
🏆 2025 Season Finale: History made in Innsbruck
The 2025 World Cup season concludes with unprecedented achievements:
- Sorato Anraku first male ever to break 3000 ELO (3049) - perfect 6/6 podiums
- Janja Garnbret returns to win Innsbruck despite visible ring rust
- Season's biggest movers: Geila MaciĂ MartĂn (+53), Yuji Fujiwaki (+26), Melody Sekikawa (+20)
- Toby Roberts claims first 2025 podium (gold!) to re-enter top 10
- Final medal count: Anraku (3G, 2S, 1B), Schalck (1G, 2S) lead the way
Competition climbing data science
We have analysed the last 18 years (2008-2025) of IFSC bouldering competitions using a full Bayesian dynamic Bradley-Terry model to find out which climbers are the most skilful, and which boulder problems have been the most difficult. Check out our analyses and elo rankings for climbers and routes here.
Recent Posts
Innsbruck 2025: Garnbret returns, Anraku makes history, and Japan's depth problem
Janja Garnbret's victorious return couldn't overshadow Sorato Anraku's historic achievement: the first male climber to break 3000 ELO. Meanwhile, breakout stars and Japan's embarrassment of riches ...
Bern 2025: Heartbreak and breakthroughs as Pan claims maiden gold
Dohyun Lee's semifinal masterclass couldn't translate to gold as Yufei Pan's emotional breakthrough victory reshapes the men's standings. Meanwhile, Erin McNeice makes history as the first British ...
Prague 2025: Ondra's farewell, French triumph, and the hardest boulder ever set?
Adam Ondra's emotional goodbye meets the potentially hardest competition boulder ever set. Meanwhile, Mejdi Schalck ends Sorato's golden run as the Big Three continue their dominance.
The new era: 2025's historic IFSC boulder season
The 2025 IFSC Boulder World Cup season has already delivered some of the most remarkable performances in competition climbing history.
FlashGrade
FlashGrade is a mathematical grading system for climbers! It leverages probabilistic data modeling to accurately assess the skill level of climbers based on their ascent data.
Adam Ondra’s bouldering flash grade
We applied the flash grade model to Adam Ondra’s bouldering ascent data on 8a.nu. Check out the results.
FlashGrade tool
We have developed a simple experimental tool that allows climbers to input their ascent data (from thecrag.com) and estimate their climbing ability. Currently it only uses the simple Bradley-Terry model, but a version that uses the dynamic Bradley-Terry model is under development.
Cumulative Performance Grade
The cumulative performance grade is a universal index of climbing performance over multiple ascents that weights each ascent proportional to the expected difficulty compared with other ascents.