If you’re dreaming of a half marathon that feels more like a trail adventure than a race, the Herron Half Marathon in Kalispell, Montana, might be your perfect match. Set for Saturday, June 20, 2026, this event isn’t just about the run—it’s about giving back. The race is the largest annual fundraiser for the Foys to Blacktail Trails (FTBT) system, supporting over 40 miles of trails that everyone can enjoy. With a rolling loop course, early morning starts, and a strong community vibe, it’s a standout for anyone who loves running on dirt.
The Course
The Herron Half Marathon is a trail loop with rolling hills—not flat, but not punishingly steep either. It’s the kind of terrain that keeps you engaged without grinding you down. The course winds through the trails around Herron Park, a gem just outside Kalispell. Since it’s a loop, you’ll pass familiar scenery, but the trail changes enough to keep it interesting. Typical race-day temperatures range from 46°F at the start to 69°F by the finish, so you’ll want layers that you can shed as you warm up.
The Experience
This race is low-key in the best way. The vibe is more community gathering than big-city event. The organizing team emphasizes carpooling because parking is limited, and they keep registration fees affordable to make the event accessible. Before each start, there’s a brief meeting to share trail info and safety tips. The half marathon goes off at 7:00 a.m., followed by the 10K and 5K. Afterward, you can hang out, cheer on other finishers, and know that your entry fee is going straight into building and maintaining trails. The Herron Half is also part of the Flathead Race Series, which includes other local races like the Big Mountain Run and Le Grizz—so it’s a great way to dip into a broader running community.
Who This Race Is For
- Trail runners: If you prefer dirt over pavement, this one’s for you. The rolling terrain is fun, and the loop format means you can dial in your pace.
- 50-state challenge runners: Montana is a big, beautiful state, and this race gives you a classic Western feel without the logistical headache of a remote location. Kalispell is accessible and scenic.
- First-timers on trails: The rolling hills and loop make this a manageable first trail half marathon. The community support is strong, and the fundraising aspect adds purpose.
- Not ideal for PR-seekers: The trail and rolling hills mean this probably isn’t your fastest half. If you’re gunning for a personal best, look for a flat road course.
Logistics and Weather
Race weekend centers on Herron Park in Kalispell. Plan to arrive early and carpool—parking is limited. The race is scheduled for June, when Montana weather can be warm and dry, but always be ready for a surprise shower or cool morning. Start times: Half at 7 a.m., 10K at 7:15, 5K at 7:30. Be sure to check the race’s website for the most current information on registration, fees, and any last-minute changes.
Ready to Run?
If a trail half marathon that gives back sounds like your kind of adventure, the Herron Half Marathon is calling. It’s a chance to run through beautiful Montana trails, support a great cause, and be part of a welcoming community. Check out the race page for details and registration.