may 11, 2024



A truly great trail is inspiring, has hidden secrets and plenty of challenges. Stream crossings, foot bridges, and baby heads—you will find them all out on course at the Dirty Secret Trail Run presented by Altra. Okay, we don’t mean literally seeing baby heads, but you will come across Baby Head Alley named after the rocks that line the trail that look like (yes you guessed it) baby heads. Knickerbocker Creek crossing is something that can’t be missed just after 3 miles on both courses and one of the highlights of the run. Both races start from Northside Elementary School in Cool, CA. Be one of the first to explore this all new course complete with butterflies, newts, rolling hills, and plenty of dirt. This course is perfect for the first time trail runner while also still challenging enough for the trail vets. The long course is 10.3 miles and the short course is 5.8 miles.

Held on the trails in Cool, California, Dirty Secret is perfect for first timers and trail vets. Hard-core runners looking for places to test their endurance will find plenty of challenging trails, ups and downs, and lots of twists and turns. There’s no separate jogging lane but there is plenty of single track. Those new to the trails will have to own up to their true ability and seed themselves accordingly in the proper wave start. Be prepared for the typical trail obstacles of rocks and roots, some low tree branches, slopes that are alternately grueling and a demanding climb out of Knickerbocker Creek which is the backbone of both the long and short course




Discover the trail runner in you this spring, summer and fall. The Fleet Feet Sacramento Trail Series takes your running off-road with a three-part series of sell-out races that promise to deliver breath-taking wilderness locations within a 1-hour drive of Sacramento.

The series kicks off with The Dirty Secret Trail Run in May, followed by the Blood, Sweat and Beers Trail Run in July and wraps up with Granite Head Trails & Ales in October. Each of the three races in the series offers a Short Course and Long Course distance to choose from.

Participants who sign up for all 3 events in the series will receive a commemorative Trail Series beanie at the end of the series.


Join Trail Heads to conquer the trails in the foothills of Gold Country. Experience stunning scenery and discover new trails to visit for years to come. Trail Heads is coached by legendary trail and ultrarunner Mo Bartley.

Each session provides 7 weeks of group coaching for each of the Fleet Feet Trail Series trail running events. Training groups meet twice per week in the Auburn foothills.

Stay accountable with a training plan complete with daily assignments for running, walking, cross training, and recovery. Work with Fleet Feet coaches on speed, endurance, running mechanics, trail running technique, fueling, hydration, and more.

Trailheads Training Group
Fleet Feet

[email protected]

Fleet Feet Sacramento
2311 J Street • Sacramento, CA  95816
Fleet Feet Davis
615 2nd Street • Davis, CA  95616
Fleet Feet Elk Grove
7460 Elk Grove Blvd., Suite 120 • Elk Grove, CA  95758