Garnet Mountain Loop

This trail is generally rated as difficult to strenuous for mountain biking, often considered a Black Diamond difficulty with a 'Hard' physical rating. It features sustained, steep climbs and technical downhill singletrack, making it unsuitable for beginners.

You'll experience a mix of terrain. The ascent primarily uses forest service roads and ATV trails, which can be gravelly and loose, with some very steep sections. The downhill portion is about four miles of narrow singletrack with steep hillsides, technical corners, and occasional isolated technical spots. Watch for downed trees and constant sidehilling.

The trail offers 'killer views' throughout. You'll pass by beautiful natural features like Rat Lake and Storm Castle Creek. The singletrack provides beautiful vistas of the canyon, and near the summit of Garnet Mountain, you can enjoy panoramic 360-degree views of the Spanish Peaks, Gallatin Range, and Hyalite Ridge from the historic fire lookout.

The best conditions for riding are typically from June through October. The fall colors in this area are particularly beautiful, adding to the scenic experience.

Generally, there are no specific permits required for day-use mountain biking on trails within the Custer Gallatin National Forest, including the Garnet Mountain Loop. However, it's always a good idea to check the official Custer Gallatin National Forest website for any current regulations or alerts before your visit.

Yes, the trail is generally dog-friendly. However, always ensure your dog is under control, preferably on a leash, and be mindful of wildlife and other trail users. Remember to pack out all waste.

The primary access point is typically the Storm Castle Trailhead. Parking is available there, but it's advisable to arrive early, especially on weekends, as it can fill up.

Be prepared for a relentless and strenuous climb. Some sections are very steep and may require you to push your bike. Around mile seven, there's a particularly steep pitch where you might be searching for your 'granny gear.' The double-track climbing routes can be gravelly and loose.

Given the presence of wildlife, it is highly recommended to carry bear spray. Also, be aware of other trail users, including pedestrians, and watch out for downed trees on the singletrack sections. Always ride within your skill level, especially on technical descents.

Yes, a significant highlight is the historic fire lookout tower at the summit of Garnet Mountain. This lookout can be rented for overnight stays, offering a unique backcountry experience. Reservations are typically required well in advance.

Yes, the route also passes through sections of the Rat Lake Trail, Garnet Mountain Trail, Rat Flat Camp Road, and Storm Castle Trail.