Onyx by Double Black Events - Onyx Ultra (8 Hour)
External Event
Distance
43.5 mi
Pace
Variable
Terrain
Mixed
Difficulty
Variable
About this run
The Onyx Ultra is an 8-hour point-based trail race at McDowell Mountain Regional Park, designed for a personalized challenge. Participants can select their preferred routes and earn points by completing tasks with flags or sandbags. This event welcomes all abilities and offers a unique race format.
What to expect
- 8-hour point-based race
- Customizable routes
- Earn points by carrying flags or sandbags
- Recovery Zone available
- Suitable for all skill levels
Typical conditions
For events around April 2026 in Fort Mcdowell, AZ, United States: Typical spring conditions in this region — mornings can still be cool; confirm start-time guidance on the official page.
How to prepare
Ultra distances need longer training blocks, fueling practice, and gear that matches the course type listed by the organizer. Always verify elevation, aid stations, and cutoffs on the official page.
Browse destination racesGetting there
This event is listed in Fort Mcdowell, AZ, United States. Confirm the exact start venue, parking, and transit options on the official registration page.
Registration is handled by the official event organizer
Know a local group? Host a community run in Fort Mcdowell
