Riley Park Trail Races
Coto de Caza, United States • 1 Aug 2026
Event overview
Riley Park Trail Races take place August 1, 2026, at Thomas F. Riley Wilderness Park in Coto de Caza, California (30952 Oso Pkwy). The event offers multiple distance options and a 6-hour event where participants complete as many loops as they can. Every finisher receives a race shirt and a finishers medal. Registration opens February 1, 2026.
Course and distances
The course is a 3.3 mile loop on single track and double track trails. Distances are organized as loop counts:
- 5k - 1 loop
- 10k - 2 loops
- 10 Miler - 3 loops
- Half Marathon - 4 loops
- 30k - 6 loops (6.5 hours to finish)
A single-loop route is available on publicly shared trail maps.
Logistics
Bib pickup is available before race day at local stores and on race morning; listed pickup locations include Road Runner Sports in Costa Mesa (1835 Newport Blvd) and Fleet Feet in Laguna Niguel (32341 Golden Lantern E). Race guides and athlete information folders are provided for specific distance groups. Visit the organization's website for the most recent information.