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Routes
Hiking trails & Routes
United States
Montana
Lewis And Clark County

South Fork Sun Trail

Moderate

3.4

(4)

20

hikers

South Fork Sun Trail

04:20

16.5km

140m

Hiking

Embark on the South Fork Sun Trail for a moderate hiking experience that spans 10.2 miles (16.5 km) with an elevation gain of 472 feet (144 metres). You can expect to complete this route in about 4 hours and 20 minutes. The trail offers open views into the South Fork…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Bob Marshall Wilderness

Lewis and Clark National Forest

Waypoints

A

Start point

Parking

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1

5.61 km

South Fork Sun - Continental Divide Trail

Highlight • Trail

The Continental Divide Trail connects the south and north of the United States, from the Mexican border to the Canadian one. It crosses several states including Montana. It has a length of about 5,000 kilometres.

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B

16.5 km

End point

Parking

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Way Types & Surfaces

Way Types

15.0 km

868 m

463 m

102 m

Surfaces

15.6 km

868 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,610 m)

Lowest point (1,540 m)

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Weather

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Today

Wednesday 27 May

18°C

7°C

53 %

Additional weather tips

Max wind speed: 9.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the difficulty and terrain like on the South Fork Sun Trail?

The South Fork Sun Trail is generally rated as moderate. While some sections, particularly those connecting to the Sun Canyon Trail, might be considered easy with gradual inclines, hikers should be prepared for varying conditions. The terrain offers open views into the South Fork Sun River country, with a mix of forested areas and open spaces. You may encounter rocky sections and river crossings. The trail winds along the water, sometimes venturing into wooded areas and meadows.

Are there any notable viewpoints or landmarks along the way?

Yes, the trail offers beautiful mountain views, especially looking out over the Gibson Reservoir and the rugged peaks surrounding it. A significant feature is the South Fork Sun - Continental Divide Trail, which the route largely follows. The area is known for its picturesque journey through diverse landscapes.

Does this trail connect to other routes?

Yes, the South Fork Sun Trail serves as a significant access point to the vast Bob Marshall Wilderness Complex. It also connects with the Sun Canyon Trail near the confluence of the North and South Forks of the Sun River, offering options to extend your hike further into the Rocky Mountain Front. The route itself follows sections of the CDT - Idaho & Montana Section and the Continental Divide Trail.

What kind of wildlife might I encounter?

The area is rich in wildlife. The South Fork Campground, located at a trailhead for this route, includes a wildlife viewing area. It's important to note that the region is frequented by bears, so hikers should be prepared for potential encounters.

What safety precautions should I take regarding wildlife?

Given that the area is frequented by bears, mandatory food storage in approved containers is required. Hikers are also strongly advised to carry bear spray and know how to use it properly. Always be aware of your surroundings and make noise while hiking to avoid surprising wildlife.

Where can I park for the South Fork Sun Trail?

The South Fork Campground is located at a trailhead for the South Fork Sun Trail, suggesting parking is available there. Specific details on parking capacity or fees are not provided, but it serves as a primary access point.

Are permits or fees required to hike this trail?

The South Fork Sun Trail is primarily located within the Bob Marshall Wilderness and the Helena-Lewis and Clark National Forest. While specific permits for hiking the trail itself are not detailed, it's crucial to be aware of any regulations for entering the Bob Marshall Wilderness Complex. Mandatory food storage in approved containers is required due to bear activity. For the most current information on permits or fees, it's best to check the official USDA Forest Service website: usda.gov.

Is the trail dog-friendly?

The provided information does not explicitly state whether dogs are allowed or if there are specific leash rules. As the trail is within a National Forest and Wilderness Area, it's advisable to check the current regulations for pets on the Helena-Lewis and Clark National Forest website before bringing your dog.

What is the best time of year to hike this trail?

The trail offers a picturesque journey through diverse landscapes. While specific seasonal recommendations are not detailed, trails in this region are typically best enjoyed from late spring through early fall to avoid heavy snow and ensure accessible conditions. Always check local weather and trail conditions before planning your trip.

Is this trail suitable for families?

The trail is rated as moderate. While some sections may be easier, the overall length of 16.45 km (10.2 miles) and potential for varied terrain, including river crossings, might be challenging for very young children or inexperienced hikers. Families with older, experienced children who are comfortable with longer distances and moderate elevation changes may find it enjoyable. Always consider your family's fitness level.

Is this a multi-use trail?

Yes, the South Fork Sun Trail is popular for both hiking and horseback riding, making it a multi-use route. Be prepared to share the trail with equestrians.

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Moderate

1

South Fork Sun Trail

04:20h

16.5km

140m

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