Cool Moon Trail Races

The Cool Moon Trail Races return to the picturesque town of Cool in California for two days packed with endurance challenges on Saturday, June 13th, and Sunday, June 14th, 2026. Runners from across the country gather at this small community nestled along the American River for what has become a must-attend event for trail runners seeking both scenic beauty and rigorous competition.
The race starts with early morning departures on Saturday as participants line up under the cool predawn sky ready to tackle distances ranging from 100 kilometers down to the shorter, yet no less demanding, 5K run. The trails here are part of a rich tapestry woven into the landscape by history and nature; runners will navigate through dense forests along well-marked paths that wind around historic sites like the Cool Firehouse, Pig Farm Trail, and Knickerbocker Gate. As dawn breaks on race day, sunlight filters through the branches overhead, casting dappled shadows across each step taken by competitors.
Each year, Cool Moon Trail Races attracts hundreds of runners who come to test their limits against this challenging course while supporting local causes. Since its inception in 2016, it has grown into a cornerstone event for trail running enthusiasts and charity supporters alike. Participants not only raise funds but also awareness for community health initiatives that benefit the residents of Cool and surrounding areas.
The race courses are designed to showcase both fire roads and single-track trails across diverse elevations, making every mile unique in its challenge and beauty. Starting at 5:00 AM on Saturday with the grueling 100K run, followed by the 25-miler and 50-mile races later that morning, each distance offers its own set of challenges—whether it’s navigating rugged terrain or pushing through long hours under California's June sun. The shorter distances commence early Sunday with a mix of road and trail for the 13.5 and 11.5-mile events before concluding the day at noon.
With an elevation profile that ranges from modest gains to mountainous climbs, participants can expect varied conditions throughout their journey. From steep ascents on Olmstead Trail to flat stretches along Salt Creek Loop, the course offers a dynamic experience for all levels of runners. Aid stations are well-placed along the route, providing hydration and sustenance at key intervals.
The weather in June typically brings warm temperatures that feel pleasant by afternoon but cool mornings ideal for early starts. Runners should anticipate winds averaging around 8 kilometers per hour with humidity hovering comfortably low at about 45%. While there is a slight chance of rain—averaging just under one millimeter—the trails remain dry and firm, ensuring a stable footing throughout the race.

For those ready to take on these distances, registration can be completed online via [https://ultrasignup.com/register.aspx?did=130294](https://ultrasignup.com/register.aspx?did=130294). Early bird pricing is available until May 15th for the 100K at $175, and then again on April 1st for all other distances. Bib pickup will take place from Friday afternoon to Sunday morning at the Cool Staging Area located at 7200 Saint Florian Court.
On race day, participants must arrive early with their confirmation email or printed registration receipt ready for bib collection. Age requirements vary by distance but generally apply to those aged sixteen and older who have parental consent forms if under eighteen. First-timers are advised to familiarize themselves with the course maps provided online before attending packet pickup on Friday afternoon.
The Cool Moon Trail Races, set in the heart of California’s serene landscapes, promise an unforgettable experience for runners looking to push their limits while contributing positively to local health initiatives and enjoying one of America's most scenic trail running routes.