Available distances
About
Riley Park Trail Races takes place on July 31, 2027, in Coto de Caza, Orange County, California. Five distances are offered: a 30K (18.6 mi), the half marathon (13.1 mi), a ten-miler (16.1 km), a 10K (6.2 mi) and a 5K (3.1 mi). Start times and elevation gain are not listed in our records.
Inland Orange County in late July is hot and dry with very little tree cover, which makes an early start and your own water supply the two things that matter most. On the trail itself, the ground is hard-packed and dusty rather than technical — road shoes will cope, but expect the descents to be looser than they look.
Highlights
- Park
- Off-road
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Races nearby
Other upcoming races around Coto de Caza.
Live Oak Odyssey
Nov 14, 2026 · Trabuco Canyon, CA · 6 mi away
3 h · 6 h
That's No Moon Ultras & 30K
Oct 10, 2026 · Silverado, CA · 11 mi away
18.6 mi · 31.1 mi · 50 mi
The Saddleback Marathon
Nov 7, 2026 · Silverado, CA · 11 mi away
6.2 mi · 13.1 mi · 26.2 mi
Lake Elsinore Color Run
Oct 24, 2026 · Lake Elsinore, CA · 13 mi away
0.6 mi
Vaquero Strong 5K
Oct 24, 2026 · Irvine, CA · 13 mi away
3.1 mi
Bubble RUN™ Irvine!
Oct 10, 2026 · Silverado, CA · 14 mi away
3.1 mi