Matt walks us through how to analyze a 100 mile ultramarathon by inspecting watch data from a sample of 2022 Javelina Jundred participants. Along the way, we get the scoop from Riley Brady, Jon Rea, and Dakota Jones to help us better understand what actually happened on race day.

Matt Abbott walks us through how to develop an algorithm to rank UltraSignup’s races by difficulty. Along the way, he brings in some guests (Jeff Pelletier, Riley Brady, Arlen Glick, & Corrine Malcolm) to discuss what makes different races hard for them and to react to iterations of the ranking. Jeff Pelletier: https://www.youtube.com/watch?v=9g6CF-ayNzU (“What makes an ultramarathon hard?”) Arlen Glick: https://ultrasignup.com/results_participant.aspx?fname=Arlen&lname=Glick Riley Brady: https://ultrasignup.com/results_participant.aspx?fname=Riley&lname=Brady Corrine Malcolm: https://ultrasignup.com/m_results_participant.aspx?fname=Corrine&lname=Malcolm Chapter Headings 00:00 Intro 01:52 Guest Intros 03:05 What makes a trail race hard? 19:37 UltraSignup Runner Rank explained 23:54 Race rank development 29:22 Hardest races of 2022? 42:38 Hardest 100 milers of 2022? 53:09 Conclusion