MTB Project Logo

Bangtail Divide - IMBA EPIC

 4.4 (31)
Trail Mapped Wrong?


25.0 Miles 40.2 Kilometers




3,611' 1,101 m


-3,309' -1,009 m



Avg Grade (3°)


Max Grade (14°)

7,923' 2,415 m


5,479' 1,670 m



All Clear 2 days ago
Some Mud: Some snow on the trail! History

Getting forecast...

Close-to-town access to an intermediate but lengthy ride featuring views of multiple mountain ranges

samh Haraldson

Overview [Suggest Changes]

E-bikes are only allowed on the motorized sections of the trail. The Bangtail Divide Trail (Trail 504) from the Stone Creek Trailhead to the intersection with Trail 555.1 is closed to motorized use. The rest of Bangtail Divide Trail (Trail 504) is open to motorcycles but not ATVs.
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: -none- [Add/Remove]
Dogs: Leashed

Need to Know [Suggest Changes]

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

Description [Suggest Changes]

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 [Suggest Changes]

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.


You & This Featured Ride

Rate Quality

   Clear Rating

Rate Difficulty

Share This Ride

Your Check-Ins


Jun 16, 2018
Katelyn Flick
Got shuttled to the start of the trail. — 2h 00m
May 25, 2018
Chris Long
Eight miles in from Stone Creek Road to top of mountain. Deep snow prevented going any further. 16mi — 3h 23m
May 7, 2018
Jade Elhardt
Sep 10, 2017
Garrett Fleming
Aug 21, 2017
Ryan Nanney
Aug 6, 2017
Scott Howell
Jul 21, 2017
Cycling Escapes
Great trail 32mi
Jul 18, 2017
Jason Newcomer
Epic says it all. Lots of climbing and smooth flow sections up top. Wish I had more energy to let it rip on final descent. And 7 miles road to the car 31.9mi

Stewarded By

Trail Ratings

  4.4 from 31 votes


in Bozeman


  4.4 from 31 votes
5 Star
4 Star
3 Star
2 Star
1 Star


in Bozeman


in Montana


1,059 Views Last Month
17,096 Since May 24, 2013
Intermediate Intermediate


I've only ridden from the end point up the the top of grassy mtn (around mile 20.7 on here), but that ride was amazing. The views are so awesome you dont notice the elevation gain, much. the trail has a few sharp turns and can get pretty slick, so dont push it to 11 on the way down. Also depending on the time of year, dirtbikes are allowed on the trail. They're really good about not tearing it up, but just keep that in mind if youre hauling ass downhill. Oct 27, 2015

Rode it today for the first time following the route described here and it's in great shape. Some loose rock on the first climb and last descent, but excellent smooth, flowy singletrack in the middle, along with great views. Note for first-time riders - after about 10 miles you come out on a double-track and there are some offshoots and it's not well marked. I stayed on the double-track for about a mile until you go over a cattle guard, then you want the first left singletrack and it's marked 504. There are some offshoots earlier with the same 504 marking that may parallel the double-track, but I didn't take those. Jul 31, 2016
Neal Evers
Boulder, CO
Neal Evers   Boulder, CO
excellent trail-- nice climb on either side, rollers on top, dirt/root/trees as well as sunny/rocky/loose sections... a little bit of everything. Trail conditions are great-- just a few easily-navigated ruts from the end of the snow melt. Jun 25, 2017

MTB Project is part of the REI Co-op family,
where a life outdoors is a life well lived.

Shop REI Mountain Bike

MTB Project is supported by

Support Your Local IMBA Chapter