Kick off your trail running season at the Bitterroot Runoff Trail Runs, an exhilarating event set for April 18, 2026, in picturesque Lolo, MT. This highly anticipated race, known for its superb organization and festive atmosphere, offers distances for every runner: a challenging 10-mile, a vigorous 5-mile, and a spirited 5K. All courses traverse the private single and doubletrack trails of the stunning Rossignol Ranch, providing an exclusive opportunity to run on meticulously maintained paths lauded for their perfect gradients and banked turns amidst open ponderosa pine forests. Expect significant climbs, with the 10-mile route featuring over 2,000 feet of elevation gain and a "relentless" uphill start, while the 5-mile course includes 1,000 feet of climbing.

Strategically placed aid stations at miles 2 and 6.5 for the 10-mile race, and at mile 2 for the 5-mile, will keep you fueled with water, gels, electrolyte drinks, and snacks. Typical race day conditions in mid-April are ideal for running, with highs around 56°F, lows around 32°F, and only a 5% chance of precipitation. Beyond the scenic and engaging trails, the Bitterroot Runoff is celebrated for its vibrant post-race experience. Cross the finish line and treat yourself to a delicious homemade brunch of pancakes, sausage, and fruit, complemented by a refreshing Big Sky Brewery beverage. The event often includes a lively trail festival featuring vendors, shoe demos, raffles, and complimentary post-race massages, making it the perfect start to your Montana trail running adventures.