Bangtail Divide - IMBA Epic

 25 votes

25.0 Miles 40.2 Kilometers



3,611' 1,101 m


-3,309' -1,009 m


7,923' 2,415 m


5,479' 1,670 m



Avg Grade (3°)


Max Grade (14°)

All Clear

3 days agoUpdate

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

samh Haraldson


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.


Rate Featured Ride


4.3 from 25 votes

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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
Jul 18, 2017
Jeffrey Chandler
Jul 6, 2017
Kelly Alberda
Dry and hot I didn't enjoy the part of the trail that is shared with motorcycles Great views of all surrounding mountain ranges 31mi — 5h 00m
Jun 25, 2017
Neal Evers
perfect conditions! 31.5mi — 3h 40m
Jun 11, 2017
Kari Bolt
10mi — 2h 00m
Jun 3, 2017
Kirkwood Donavin
15mi — 2h 15m
Sep 17, 2016
William Sherman

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Trail Ratings

  4.3 from 25 votes


in Bozeman


  4.3 from 25 votes
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in Bozeman


in Montana


1,035 Views Last Month
11,447 Since May 24, 2013
Intermediate Intermediate



All Clear 3 days ago

Getting forecast...

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

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

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