Select the event you're interested in
Register to discover the race
Europe
22 - 25 January 2026
19 - 22 March 2026
19 - 21 March 2026
09 - 12 April 2026
24 - 26 April 2026
01 - 03 May 2026
14 - 17 May 2026
15 - 17 May 2026
23rd May 2026
11 - 14 June 2026
12 - 14 June 2026
18 - 20 June 2026
24 - 28 June 2026
01 - 05 July 2026
09 - 11 July 2026
10 - 12 July 2026
15 - 19 July 2026
17 - 19 July 2026
24 - 26 July 2026
01 - 02 August 2026
06 - 08 August 2026
24 - 30 August 2026
10 - 13 September 2026
11 - 13 September 2026
18 - 20 September 2026
24 - 27 September 2026
30 - 31 October 2026
30 October - 01 November 2026
07 - 09 November 2025
Oceania
14 - 15 February 2026
26 - 28 November 2026
North America
05 - 07 March 2026
23 - 25 April 2026
27 - 28 June 2026
23 - 25 July 2026
14 - 16 August 2026
17 - 20 September 2026
08 - 11 October 2026
13 - 15 November 2026
02 - 04 October 2025
26 - 28 September 2025
Asia
06 - 08 March 2026
13 - 15 March 2026
10 - 12 April 2026
30 April - 03 May 2026
18 - 21 June 2026
10 - 12 December 2026
29 November - 07 December 2025
14 - 16 November 2025
08 - 09 November 2025
17 - 19 October 2025
16 - 18 May 2025
11 - 20 April 2025
South America
18 - 22 March 2026
26 - 28 June 2026
31 July - 02 August 2026
18 - 22 November 2026
Africa
29 - 31 May 2026
km
EN
Find a Race
Majors
Finals
Sports System
Inclusion & Diversity
Elite Runners
Anti Doping
Health
Age Group Qualification
Runner Search
World Rankings
UTMB Index Races
Benefits
FAQ
News
UTMB Live
Podcasts
Press
UTMB Legends
UTMB For The Planet
UTMB Partners
UTMB Cares
Travel Philosophy
RIVER OF NO RETURN ENDURANCE RUNS 2024 - 32KM
City / Country
Challis, Idaho
Date
Race Category
Distance
Elevation Gain
