Coldwater Rumble
Goodyear, United States • 17 Jan 2026
Event details
The Coldwater Rumble takes place Saturday, January 17, 2026 at Estrella Mountain Regional Park, Goodyear, AZ. It is part of the Aravaipa Running Desert Runner Trail Series. Distances offered include:
- 100 Mile
- 100K
- 60K
- 40K
- 10 Mile
- 5 Mile
Registration closes Monday, Jan 12. Camping sites and tent/cot rentals are available at the Competitive Track next to the start/finish area. There is a $7 park entry fee per vehicle.
Course and race logistics
Courses run on desert trails in the Sierra Estrella foothills and use single and double track, crushed granite, rocks, sandy washes, old jeep roads, and dry wash beds. The 100 Mile event lists 7,900 feet total elevation gain and a maximum elevation near 1,415 feet, with a 32 hour overall time limit. The 100K and 60K distances include separate elevation and distance stats and have multi-hour time limits and course maps available.
Aid stations are fully stocked and drop bags are allowed at the Rumble HQ for all distances and at Coldwater Ranch Aid for the longer events. The event is cupless - runners should bring a reusable cup or use provided reusable cups. Crews can access the start/finish area and Rodeo Ranch Aid with restrictions. Pacers are permitted for the 100 Mile and 100K under specified conditions. Medical staff will be on site. Trail marking, remote timing points, and live tracking are provided. Visit the organization's website for the most recent information.