The M Trail on Mount Sentinel

The Mount Sentinel via Kim Williams and Hellgate Canyon Loop offers a dramatic shift in scenery, starting with a tranquil stroll along the Clark Fork River before ascending steeply through Hellgate Canyon. You'll pass through areas burned in the 1985 Hellgate Canyon fire, then dense forest, before reaching the open slopes of Mount Sentinel, where wildflowers like lupine and Indian paintbrush bloom in season.

This difficult 7.9-mile (12.8 km) hiking route involves a significant 3626 feet (1105 metres) of elevation gain, taking around 4 hours and 58 minutes to complete. Parking is available near the trailhead, and no permits or fees are required. Be prepared for potentially slippery conditions in winter, where crampons may be useful.

This loop provides a unique perspective on Missoula's iconic Mount Sentinel, offering a less direct but equally rewarding alternative to the popular "M" trail. From the summit, you'll be treated to expansive views of the Missoula Valley, the winding Clark Fork River, and the distant Bitterroot Mountains, with the ancient water lines of Glacial Lake Missoula visible on Mount Jumbo.

The M Trail is a quintessential Missoula hike, offering a steep, zigzagging ascent that rewards you with sweeping panoramic views of the city, valley, and surrounding mountains. You'll climb through native prairie plants, which are particularly vibrant with wildflowers in the spring. This 1.7-mile (2.8 km) route, with its 703 feet (214 metres) of elevation gain, is a fantastic way to get a quick workout and enjoy the scenery in just over an hour.

Given its popularity as an 'open-air gym' for locals, expect company on the trail, especially during peak hours. The M Trail is easily accessible from Missoula and is open year-round, though you should be prepared for muddy or snowy conditions if hiking in winter. Always stick to the established paths to help mitigate ongoing erosion challenges.

This iconic trail is notable for the large, whitewashed 'M' on the mountainside, representing the University of Montana. It's a heavily trafficked route, often used for quick workouts or family outings, and connects to other U.S. Forest Service trails and the city's wider trail system from its summit, making it a gateway to further exploration.