Satte of ultra running 2020
The State of Ultra Running 2020. We are pleased to share with you the largest study ever completed on the sport of ultra running. RunRepeat with the support of the International Association of Ultrarunners (IAU) has analyzed 5,010,730 results from 15,451 ultra running events over the last 23 years. More details under following link (click picture below).

https://runrepeat.com/state-of-ultra-running
Jacek Bedkowski
IAU Director of Communication