Dirty Secret Trail Run

Dirty Secret Trail Run

Dirty Secret Trail Run is a spring trail race in Cool, California, presented by Altra and serving as the first event in a 2026 three-part trail series. The race uses single-track trails that pass through green meadows and rolling hills and include a creek crossing.

Distances offered:

• 10.3 Miler
• 5.8 Miler

Courses include rugged terrain with rocks and roots, some low tree branches, and a demanding climb out of Knickerbocker Creek, which is a feature of both the long and short courses. The route aims to test endurance on natural trail surfaces rather than on paved roads.

The event is limited to 600 participants. The start and finish are at Northside Elementary School, 860 Cave Valley Rd., Cool, CA. Packet pick-up is available the day before at Fleet Feet in Sacramento and on race day at the school; friends may pick up packets for participants.

Race swag includes a tech shirt and a custom finisher medal. A strawberry pancake breakfast is provided following the race. Entry fees are non-refundable and entries are non-transferable; this policy applies in all circumstances, including course changes or cancellation due to an act of nature. Visit the organization's website for the most recent information.