Runners must meet one of the listed qualifying standards of the race website . The entry fee applies to all runners regardless of qualification time. Runners interested in applying should do so above. 24 Hours (Miles) Men A - 145 Men B - 134 Women A - 130 Women B - 120 100 Miles (Hours) Men A - 14:15 Men B - 15:40 Women A - 15:50 Women B - 17:25 100k (Hours) Men A - 7:35 Men B - 8:20 Women A - 8:25 Women B - 9:15 50 Miles (Hours) Men A - 5:50 Men B - 6:25 Women A - 6:30 Women B - 7:05
The Desert Solstice 24 Hour Run will serve as an ideal qualifier for the USA 24 hour national team to compete in the world 24 hour championship.
Laps will be recorded by a bib chip timing system and will be submitted for USATF record purposes, including a timing point on the back side of the track (every 200M). All timing will be contained on your bib so you must wear prominently for the duration of the event.. You may leave the track at any point in time during the race, but you must return to the same place before continuing. You may not leave and return directly by the timing equipment, to avoid double counting a lap. Every 4 hours we will change the direction of travel. Your number of laps, distance, and race will be shown on an electronic display near the start.
The race route is a certified 400-meter all-weather track located at Camelback High School in Phoenix, AZ.
Entrants will receive results for their 100-mile split (if they reach that distance) AND the 24-hour. E.g.: This means if you're applying to run a 50KM world record and stop at that point, your ultra signup will reflect 50KM distance for the 24-hour event. All entrants will be registered for the 24-hour event.
We cannot produce this event without the help of our amazing volunteer team. If you would like to join our volunteer team, we are looking for help with event setup, main aid station, timing, and event breakdown. Volunteer perks include a race shirt or other goody and Aravaipa Race Credits. You can see our current opportunities and signup here: Desert Solstice Volunteer Form
Dec 19, 2026
Distance — 24 Hours
Type — Running
08:00
$325.00
These values represent the 3-year monthly averages for December in Phoenix.
Learn more about the host city, Phoenix.
Phoenix is the capital of the state of Arizona, the most populous city in the American Southwest. Warm and sunny winter weather have ensured a thriving tourism industry, and the city has become the region's primary political, cultural, economic, and transportation center. Phoenix is extremely hot and dry in the summertime, so always have sunscreen with you! It had about 1,625,000 residents in 2021, and is the fifth largest city in the United States.
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Watch highlights and course previews from previous years.
All-time top performances and historical records for Desert Solstice.
| Place | Name | Year | Time | |
|---|---|---|---|---|
| 🥇 | Run Camille | '18 | 162.919 | |
| 🥈 | Marisa Lizak | '22 | 156.7607 | |
| 🥉 | Stéphanie Gicquel | '24 | 154.9288757 | |
| 4 | Lauren Jones | '24 | 154.0523943 | |
| 5 | Megan Eckert | '24 | 153.4207204 | |
| 6 | Marisa Lizak | '24 | 152.0843867 | |
| 7 | Katalin Nagy | '14 | 151.443 | |
| 8 | Marisa Lizak | '19 | 148.08 | |
| 9 | Traci Falbo | '14 | 147.676 | |
| 10 | Courtney Dauwalter | '16 | 147.49 |
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