Mount Sentinel via Kim Williams and Hellgate Canyon Loop

The trail is easily accessible from Missoula. You can typically find parking near the trailhead for the Kim Williams Trail, which is often considered the starting point for this loop. Given its popularity, arriving earlier in the day is recommended to secure a spot.

The terrain varies significantly. The initial Kim Williams Trail section is generally flat, starting paved and transitioning to gravel along the Clark Fork River. The Hellgate Canyon Trail then begins a challenging ascent with switchbacks through a burn area. The final climb to the summit of Mount Sentinel, known as the "M" Trail, is very steep with significant elevation gain over smooth gravel, offering a serious workout.

You'll encounter the iconic concrete "M" on Mount Sentinel, a prominent Missoula landmark. Throughout the hike, you'll be treated to spectacular panoramic views of the Missoula Valley, the winding Clark Fork River, nearby Mount Jumbo, and the distant Bitterroot Mountains, especially from higher elevations.

This loop offers a diverse experience. The Kim Williams Trail section is flat and ideal for casual walks or families. However, the Hellgate Canyon and Mount Sentinel sections involve strenuous, steep climbs, making the full loop difficult and not recommended for beginners or young children. Hikers can choose to do only the easier riverside portion.

Spring and fall are generally the best times to hike this trail, offering pleasant temperatures and vibrant scenery. Spring brings abundant wildflowers, while fall showcases beautiful foliage. Summer can be hot, so an early start is advisable. Winter hiking is possible but requires appropriate gear for potentially icy or snowy conditions on the steeper sections.

Yes, this route incorporates sections of several official trails. You will hike along parts of the Smokejumper Trail, Hellgate Ridgeline, Trail to the M, Kim Wiliams Trail, and Sentinel Climb.

Yes, dogs are generally allowed on this trail. However, they must be kept on a leash, especially due to the presence of wildlife and other hikers. Please remember to pack out all pet waste.

No, there are no specific permits or entrance fees required to hike this trail, as it is located within the Lolo National Forest. However, always practice Leave No Trace principles to help preserve the natural environment.

Along the Clark Fork River, you might spot various bird species and small mammals. As you ascend, wildflowers such as arnica, lupine, larkspur, and Indian paintbrush are abundant, particularly during their blooming seasons. Keep an eye out for deer and other forest creatures, especially in the quieter sections.

There are no dedicated water sources or facilities directly on the trail itself. It is crucial to carry enough water for the entire hike, especially given the strenuous climbs. Plan to use facilities in Missoula before or after your hike.

Given the varied terrain and difficulty, you should bring plenty of water, sturdy hiking shoes, sun protection (hat, sunscreen), layers of clothing, snacks, and a map or GPS device. Trekking poles can be very helpful for the steep ascents and descents.