Grandmaster Ultras
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Event
Grandmaster Ultras is an ultrarunning event held on the Arizona Strip near Mesquite, Nevada (501 Hillside Dr, Mesquite, NV 89027). The event dates are February 27 to March 1, 2026. Entry is restricted to runners aged 50 to 99. Registration opens May 4, 2025. Cutoff times are 48 hours for the longest events and 24 hours for the shorter events.
Distances, rules and course highlights
- 100 miles
- 100 km
- 50 miles
- 50 km
The main course is a 50K featuring a clockwise Thelma Louise loop plus a 6.2 mile out-and-back. The 50K course has about 1,580 feet total elevation gain and loss, with minimum elevation at 1,722 feet and maximum at 2,605 feet (Thelma Louise site near mile 19). The 50 miler repeats the Thelma Louise loop twice for about 2,450 feet total elevation change. The 100K is two laps of the 50K course and the 100 miler is two laps of the 50M course. Aid stations are placed approximately every 4 to 7 miles, with named stations such as Cross Roads, Junction, Cattle Gate, Oasis, and Overlook at listed mile points. Pacers are permitted under specified conditions: for the 100M and 100K after the first lap or when it gets dark; for 50M and 50K if the runner will finish in the dark. Runners over 70 may use pacers from the start for all distances. Visit the organization's website for the most recent information.
