3.0
(5)
50
hikers
08:01
28.4km
600m
Hiking
Prepare for a challenging day on the Main South Fork Trail, a difficult hiking route that spans 17.7 miles (28.4 km) and involves a significant 1962 feet (598 metres) of elevation gain. You can expect to spend around 8 hours traversing this demanding path. As you hike, you will experience…
Last updated: April 23, 2026
Waypoints
Start point
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1.16 km
Highlight • Forest
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28.4 km
End point
Way Types & Surfaces
Way Types
28.4 km
Surfaces
28.4 km
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Elevation
Highest point (1,330 m)
Lowest point (1,200 m)
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Tuesday 26 May
24°C
12°C
66 %
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This route was planned by komoot.
This trail is rated as difficult. While some sources might suggest easier sections, the full route as described on komoot covers a significant distance of approximately 28.4 km (17.6 miles) with nearly 600 meters (1,968 feet) of elevation gain, making it a challenging endeavor suitable for experienced hikers.
The estimated duration for completing the Main South Fork Trail is around 8 hours, based on the total distance and elevation changes. This is a point-to-point trail, so plan for transportation at the end or consider it as part of a multi-day backpacking trip.
The trail traverses incredible country within the Bob Marshall Wilderness, offering beautiful and challenging landscapes. You can expect varied terrain, including sections with deep green water and canyons, especially towards the Meadow Creek Gorge. Given its wilderness setting, expect natural, unpaved surfaces that can be rugged.
Yes, dogs are generally allowed on trails within the Flathead National Forest and Bob Marshall Wilderness. However, it's crucial to keep them on a leash to protect wildlife and ensure a pleasant experience for all users. Always practice Leave No Trace principles, including packing out all pet waste.
The best time to hike this trail is typically during the summer and early fall months (July through September). During this period, snow has usually melted at higher elevations, and the weather is generally more stable. Always check current trail conditions and weather forecasts before heading out, as conditions can change rapidly in a wilderness area.
While there isn't a specific entrance fee for the Flathead National Forest itself, some activities or designated areas might require permits (e.g., for overnight backpacking in certain wilderness areas, or commercial use). For day hiking the Main South Fork Trail, a permit is generally not required, but it's always best to check the latest regulations with the Flathead National Forest service before your trip, especially if planning an overnight stay.
The trail offers breathtaking scenery throughout the Bob Marshall Wilderness. A notable highlight is the Fireweed Field in Flathead National Forest. Additionally, the scenic beauty of the South Fork of the Flathead River is prominent, especially as you approach the Meadow Creek Gorge, with its deep green water and canyons.
Yes, the route is part of a larger network within the Bob Marshall Wilderness. The komoot route for the Main South Fork Trail also passes through sections of the Main South Fork Trail, Meadow Creek Gorge Trail, Main East Side South Fork Trail, Picture Ridge Trail, and West Side South Fork Trail, offering opportunities for extended exploration.
Due to the remote nature of the Bob Marshall Wilderness, specific trailhead parking details can vary. Access points are typically found at the edges of the wilderness area. It's recommended to consult detailed maps or contact the Flathead National Forest ranger district for the most current and precise information on trailhead locations and parking availability, especially given the trail's point-to-point nature.
Yes, fishing is a popular activity in the South Fork of the Flathead River, which this trail is associated with. The remote wilderness setting provides excellent opportunities for anglers looking to experience pristine waters. Be sure to check Montana's fishing regulations and acquire any necessary licenses before you go.
The Main South Fork Trail offers a true wilderness experience within one of the largest wilderness areas in the lower 48 states. Its remoteness provides a unique opportunity to 'get away from it all' and immerse yourself in untouched nature, far from crowds. It's an ideal choice for those seeking solitude and a challenging adventure.