Bangtail Divide, Montana



Built in 2003, the Bangtail Divide Trail (BDT) quickly became the local go-to trail for those looking for a long ride without a long drive. The BDT offers easy access to a ridgeline traverse with stellar views of multiple mountain ranges, fields of wildflowers and well-crafted singletrack sections guaranteed to satisfy. 

Highlights include: switchbacks, ridgetop singletrack, and flowing downhill.

Features: eMTB allowed

Dogs: Leashed

Need to Know

There is little to no water on this route so plan accordingly.


Either set up a car shuttle or start with 7 miles of road riding south down Bridger Canyon Rd. 

Once you hit dirt, expect to climb, climb, climb. Rigorous switchbacks take you to the top of the divide where the climb becomes more gradual and you are treated to views of the Bridgers, Crazies, Absarokas, Beartooths, Gallatins, Madisons, and Tobacco Roots. 

The divide section is through vast open prairies and short sections of shaded trees. The last section of the trail is the fun begins. First, a lengthy flowing section off the divide as you leave the top of the range proper, then one last climb to the top of Grassy Mountain, followed by the sweeping, curving downhill of the Grassy Mountain trail to finish.

History & Background

The trail was built by crews led by Terry Johnson, a local trail building legend, who was ahead of the sustainable, bike-friendly building curve by delivering backcountry grade reversals, rideable switchbacks and flowing lines long before these techniques were popularized.

Trail map

Locate Me
Get Directions

36.771 km / 22.848 mi

Total Distance

1,259 m / 4,131 ft

Total Ascent

1,160 m / 3,804 ft

Total Descent

2,414 m / 7,920 ft

Highest Point

Ride type:
Mountain biking
Road riding
Kid friendly
Rail Trail
Difficulty: Advanced (Black)
Ride Duration: 1/2 day
Fitness Level: High
Shared Bike Path - Paved
Shared Bike Path - Dirt
On-Road Bike Lane
Off-Road - Fire Trail
Off-Road - Rail Trail
Off-Road - Single Track
Off-Road - Downhill
Gravel Road
Mobile Coverage: Limited
Estimated Distance: 25.0
Elevation Gain: 3611
First Aid
Bike hire
Bike servicing
Accessible by bike
Accessible by car
Accessible by public transport
Accessible by shuttle
Loading comments...