12hr • 24hr • 48hr • 72hr • 144hr Fixed-Time Races
October 10–16, 2026 • Himmel Park • 1000 N Tucson Blvd, Tucson, AZ 85716
Race start times
- 144hr: Sat 10/10/26 • 10:00am
- 72hr: Tue 10/13/26 • 10:00am
- 48hr: Wed 10/14/26 • 10:00am
- 24hr: Thu 10/15/26 • 10:00am
- 12hr: Thu 10/15/26 • 10:00pm
- All races end Fri 10/16/26 • 10:00am
Who we are
Community & Unity • a positive, drama-free crew of ultra endurance athletes who care about keeping Himmel Park clean, safe, active and thriving.
Choose your event
The longest format on the page. Settle in, manage effort, and keep stacking miles for six full days.
The multi-day classic. Pace, rest, repeat. Community keeps you moving.
Double the day, double the distance • stay steady and stack miles.
Fixed-time racing: go as far as you can in 24 hours. You vs You.
A fast overnight effort for runners who want a shorter fixed-time challenge under the lights.
What is fixed-time racing?
Runners and walkers aim to cover as much distance as possible within a set time: 12, 24, 48, 72, or 144 hours. It’s a You-vs-You style event • choose your pace, manage your rest, keep stacking laps.
Bring your own fuel (BYOF)
If you follow a specific diet, please bring your own snacks and beverages. Volunteers will provide vegan/vegetarian burritos, bagels, and assorted snacks throughout the event.
The 520
520 miles • $520
If you have an interest in participating in the 520 please email: TucsonUltra@gmail.com