Desert Solstice
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Desert Solstice : December 20, 2025, Phoenix, AZ
The event is a timed endurance running meet held in Phoenix, AZ on December 20, 2025. The format centers on a 24-hour competition and includes ultra-distance options. The venue is a certified 400-meter all-weather track at Central High School.
Distances
- 24 hours
- 100 miles
- 100k
- 50 miles
Course and timing
Laps are recorded by a bib chip timing system and displayed on an electronic board near the start. Runners must wear the bib prominently for the duration of the event. Every 4 hours the direction of travel on the track will change. Runners may leave the track but must return to the same place before continuing; returning directly by the timing equipment to avoid a lap is not permitted.
Entry and results
Entrants must meet listed qualifying standards; the entry fee applies to all runners regardless of qualification time. Registration closes December 15, 2025. The event serves as a USA 24 Hour qualifier. Entrants will receive results for their 100-mile split if they reach that distance and for the 24-hour event. Visit the organization's website for the most recent information.