Grandmaster Ultras

Mesquite, United States • 27-1 Feb-Mar 2026

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.

Race information

100 mi
100 Miles
100 km
100k
50 mi
2450 m+
50 Miles
50 km
1580 m+
50k
Visit the organization's website for the most recent information.
Trail runs nearby

Experience desert trails around Logandale and Valley of Fire with multi day ultra options on a marked 19 mile loop amid sandstone and petroglyphs. Camping, aid stations and hot drinks support long runs; runners must bring their own bottle.

Run rugged desert singletrack and sweeping mesa views at Flat Top Mesa in Mesquite NV, Feb 14 to 15 2026. Loop courses from 50K to 100 miles include steep climbs, a technical descent and big sun for a scenic, honest test.