About the Colorado River Run 250K 100 Mile 100K 50 Mile 50K Marathon Half Marathon Ruck 10K 5K Kids 1K
The course runs along the Colorado River at Turkey Bend Park, moving through riverbank stretches, single-track dirt trails, and occasional technical sections with moderate climbing. The scenery shifts between open water views and quieter natural habitat, so the terrain keeps changing even when the legs get tired. Aid stations are spread across the course with volunteers and medical support.
Pacers are permitted for the longer ultra distances, joining after a designated point in the race and checking in at aid stations along the way. Each runner is allowed one pacer at a time, and pacers must register separately, sign a waiver, and wear an official bib. The shorter distances welcome children running alongside a registered parent at no extra charge.
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Distances & Start Times
250K11/27/2026 08:00$360
100 Miles11/27/2026 09:00$230
50 Miles11/27/2026 09:00$190
31 Miles11/28/2026 09:00$150
26.2 Miles11/28/2026 09:00$140
13.1 Miles11/28/2026 09:00$110
Half-Marathon Ruck11/28/2026 09:00$110
6.2 Miles11/28/2026 09:00$80
5K11/28/2026 09:00$60
5K11/28/2026 09:00$15
Exceptional Athlete (Fitworks) 5K11/28/2026 09:00$25
Exceptional Athlete (Fitworks) 10K11/28/2026 09:00$25
Exceptional Athlete (Fitworks) Half-Marathon11/28/2026 08:00$35
Exceptional Athlete Guide11/28/2026 08:00Free
Going for a Time?
Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.
Not sure what to aim for? The marathon pace chart lists the pace for every finish time.
Where to Stay
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