Who is eligible to participate in this race?

This event is exclusively for runners aged 50 and older.

Pacers are allowed for 100M/100K runners after the first lap or at night, and for 50K/50M runners if finishing in the dark. Runners 70+ are permitted to have pacers from the start in all distances.

What is the course terrain like?

The course consists of rugged ATV trails, rocky terrain, and steep hills within a high desert environment.

All races

20 weeks out

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All races

20 weeks out

Grandmaster Ultras 2027

Friday, February 26, 2027Mesquite, NV50K – 100M

The Grandmaster Ultras: Arizona Strip Adventure is an exclusive ultrarunning event designed specifically for athletes aged 50 and older. Set in the rugged high desert, the course features the iconic Thelma & Louise Loop, offering runners stunning vistas of Joshua trees, rocky canyons, and the dramatic Beaver Dam Wash. Participants will navigate challenging ATV trails and steep climbs, with a unique tunnel feature at mile 0.6. The event celebrates endurance with distances ranging from 50K to 100 miles, all set against the backdrop of the untamed Southwest. With generous cutoffs and specific pacer allowances for older age groups, this race is a true test of grit and a celebration of lifelong running.