The Western States 100, by the Numbers
A dive into the treasure trove of data available on the Western States 100.
Katie Schide and Ludovic Pommeret won the Hardrock 100! Read our 2025 Hardrock results article and watch Katie’s and Ludo’s interviews for more of the race story.
Mallory Richard
How to Win the Zegama Marathon: Studying Race Strategy from the Data
A view of strategies used by race winners at Zegama Marathon down through the years, making use of checkpoint data.
From Shakeout to Shakeup: Artificial Intelligence and Trail Running
A look at how AI can impact the world of trail running and ultrarunning.
Quantifying Community Impact: Data On How Trail Races Give Back
A quantitative look at the value of trail work volunteer hours required by trail races and ultramarathons.
One Year, Ten Races: Statistics From the Inaugural World Trail Majors Circuit
With the first year of the World Trail Majors done and dusted, we take a statistical look at the inaugural circuit.
Analyzing Lottery Season: A Statistical Look at Lottery Entries for Popular Trail Races
A statistical look at lottery entries for the most popular trail races and ultramarathons.
A Data-Driven Environmental Scan of the Trail and Ultra Coaching Industry
A statistical look at the growing popularity of trail and ultrarunning coaching services.
Sierre-Zinal: A Data-Driven Primer on the Iconic Mountain Race
A numeric look into Sierre-Zinal highlighting participant growth, the growth in female participation, and steadily improving winning times.
A Data-Driven Primer on 200+ Mile Races
A look into 200+ miles races, including variation in pace over the course of an event and the role of rest time in finishing times.
Diving into Ultramarathon DNF Data
A statistical analysis of DNFs (did not finishes) in ultramarathons and their various causes.
How Much Does It Cost To Be A Competitive Trail Runner?
Being a competitive trail runner is not cheap. Read this quantitative analysis of what it costs to trail run competitively.
Underrated Ultra Performances: Great International Grandmasters
A celebration of some overachieving grandmasters from outside of North America, through the lens of data.
A Data-Driven Primer on the IAU 24-Hour World Championships
A data-driven look at trends in 24-hour running in advance of the 2023 IAU 24-Hour World Championships.
A Data-Driven Primer for the Backyard Ultra World Championships
A look at the history or and trends in backyard ultrarunning through the lens of data.
Underrated Ultra Performances: North Americans Who Dominate
A look at some exceptional achievers in the world of ultrarunning, through the lens of data.
Stories from the UTMB Races Through the Lens of Data
Using data to look at some remarkable stories from the various UTMB races through the years.
The Increasing Competitiveness of Women’s Ultrarunning
A statistical analysis of the increasing competitiveness of women’s ultrarunning, using the 2023 Western States 100 as a case study.
Feeling the Heat: How Temperature and Course Conditions Affect Western States 100 Finishing Times
An analysis of the effects of heat and course conditions on finish times at the Western States 100.
Golden Trail Versus UTMB: A Data-Driven Look at World Series Competitiveness
A statistical analysis of the competitiveness of the Golden Trail World Series and the UTMB World Series.
A Guide to Mountain, Ultra, and Trail Runner Rankings
A breakdown of the different ranking systems for mountain runners, ultrarunners, and trail runners.
If at First You Don’t Succeed, Run That 100 Miler Again
The data show that runners improve their 100-mile finishing times when they repeat the same race two or more times.
Yes, Your Trail Running Shoes Cost More These Days
An analysis of how the price of trail shoes has increased over time.
Hotbeds, Hidden Gems, and Underdogs: Ultramarathon Distribution Across the U.S. and Canada
A statistical look at the geographical distribution of ultramarathon races and runners in the United States and Canada.
The Art of Pacing: Patrick Reagan’s Winning Performances at the Javelina Jundred Mile
A statistical analysis of Patrick Reagan’s consistent top performances at the Javelina Jundred Mile and a look at the top picks for this year’s race.
Something for Everyone: How Generous Cutoff Times Contribute to Our Sport’s Diversity
A statistical analysis of the effect more generous race cutoff times have on diversity in ultrarunning, in terms of gender and age.
How to Win UTMB, According to the Data
A statistical analysis of checkpoint data to determine where in the race UTMB is generally won.
How Much Slower Are Hilly Races?
A statistical analysis of finishing times in 50-kilometer races with various amounts of elevation gain.
