Harriman Trail Runs

The Harriman Trail Runs return to Island Park, Idaho on August 15th, offering a range of distances for runners of all ages and skill levels. The event takes place in the heart of Harriman State Park, where participants can expect scenic routes through forested trails and meadows with stunning views of the Teton Mountains. Registration opens April 1st at https://ultrasignup.com/register.aspx?did=137636 for this year’s edition, which includes a new Kids Run option.
The morning of the race will be characterized by firm but slightly soft trail conditions underfoot as runners navigate through pine needle-covered single tracks and gravel paths. Wildlife sightings are common in Harriman State Park during August, adding an element of excitement to each run. The park's Eastern trails will remain closed until June 15th and the Ridge Trails until July 1st due to seasonal closures.
Established several years ago with a focus on community engagement and scenic beauty, the Harriman Trail Runs have grown in popularity among runners seeking challenging yet rewarding courses within Idaho’s natural landscape. The event supports local youth programs by offering a free Kids Run for young participants under 18 who are accompanied by parents or guardians. Older teens must obtain race director permission to run any distance longer than the 1K option.
The Harriman Trail Runs feature several distinct routes, each with its own unique characteristics and challenges. The Venti (50K) course covers two loops through the park’s varied terrain, while the Grande (25K) consists of a single loop that showcases both forested areas and open meadows. Runners opting for the Tall distance will follow the Silver Lake Trail after accessing an aid station via two-tracks.
Weather conditions in August at Harriman State Park can vary but typically feature firm trail conditions with UV index ratings around 7, indicating high sun exposure. Temperatures range from mild to warm during early morning hours when races begin, making it important for participants to stay hydrated and protected against the sun’s rays throughout their run.
The race offers a variety of distances including the Venti (50K), Grande (25K), Tall (10K) runs as well as a Short Kids Run option.
Participants must register at https://ultrasignup.com/register.aspx?did=137636 before deadlines to secure their spot in one of the four offered distances, with fees starting from $10 for the 1k/Short distance and increasing up to $130 for the Venti (50K) race. Bib pickup will occur at Island Park's local community center on August 14th between noon and 6pm where participants must bring a photo ID.
The start location is set along Green Canyon Road, which serves as a key access point into Harriman State Park. Age requirements vary by distance but all runners under the age of 18 need parental or race director approval to participate in any distance beyond the Kids Run option. First-time attendees should prepare for variable trail conditions and plan accordingly with proper footwear and hydration strategies.
Harriman Trail Runs, taking place on August 15th in Island Park, Idaho, is an event worth experiencing due to its scenic trails and challenging courses that cater to runners seeking a rewarding experience within the natural beauty of Harriman State Park.