19 miles
3,493 ft
-4,156 ft
2 miles
High Point
Trail Supporters, Builders & Maintainers of Bitterroot - Rock Creek Divide (313) Trail


  • Riding Area
    Hamilton, Montana
  • Difficulty Rating
  • Trail Type
  • Bike Type
    AM, XC
  • Trail Usage
  • Direction
    Both Directions
  • Climb Difficulty
  • Physical Rating
  • Season
    July - September
  • Dogs Allowed
  • Global Ranking
    #17005 in Mountain Biking
  • Local Popularity
    5 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
  • Land Manager

The official name is the Bitterroot - Rock Creek Divide Trail, and when I looked on the maps it is also listed as the Easthouse National Recreation Trail. I have never heard anyone call it either of those. We simply call the 313.

If you don't have time for Sapphire Crest or can't manage a shuttle on the other side at Sawmill Saddle, consider an out and back to Dome Shaped Mountain. If the descent down Big Springs doesn't sound fun, the other option is seven more miles on 313 to Sawmill Saddle.

To begin, the trail tends to continue climbing with dramatic drop offs to your right. At 4.5 miles there is an impressive couloir descending to an unnamed lake. At 5.0 miles is the junction with Skalkaho-Gird Trail, which would eventually take you over to the Palisade Trail and Willow Creek trails. One day if we can get the resources for maintenance, it could be a fun option. For now be content to stay on 313.

The trail tops out on the top of Dome Shaped Mountain at 8650 ft and 6.6 miles. Before you get there, the trail takes a quick steep dive through some loose rock. Be careful. I got bucked off here, and from personal experience an injury here is not welcome. After the quick taste of things to come, there is more climbing as the trail becomes rocky and skirts a steep east facing bowl.

Take awhile to enjoy the views at the top and check out the Burnt Fork drainage, your eventual destination.

After topping out, the reward is mile of descending, another mile of relatively flat ridgeline, and the more downhill. At mile 10, the trail enters a recent burn, and if you are lucky the trail has been cleared, otherwise good luck. The fire burned all the lichen and moss off the granite boulders, leaving them a stark white contrasting with the surrounding blackened trees. The effect is surreal as the trail seems to weaved over and around tombstones and crypts.

Leaving the burn behind the trail begins climbing again, and a steep hike-a-bike awaits you for the last major climb up to Eagle Point. If you have any spring left in you legs, contemplate climbing the pile of scree to the top.

At this point the 313 trail has a complete change in character. It gets wider and the trail is covered with flat blocks of talus. Just remember the mantra, "Don't touch the brakes," and you'll be fine. Flat pedals don't hurt, either.

Access Info

Drive to the top of Skalkaho Pass

Local Trail Association
More Stats for Bitterroot - Rock Creek Divide Trail (313) bike trail
  • Altitude change
    -663 ft
  • Altitude min
    6,615 ft
  • Altitude start
    7,278 ft
  • Altitude end
    6,615 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    9 miles
  • Distance down
    10 miles
  • Distance flat
    1,725 ft
  • view trail stats
on Jul 19, 2016
Avg: 4.5 (2 votes)

view (0)
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail Ridden Direction
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intendid direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos

Trail Difficulties
  • Access Road/Trail
  • White
  • Green
  • Blue
  • Black
  • Double Black Diamond

Trail Report Status
  • Clear / Green
  • Minor Issue / Yellow
  • Significant Issue / Amber
  • Closed or Major Issue / Red

  • Land Owner Overlay
  • Wilderness (typically no bikes in USA)
  • BLM (public)
  • USFS (Wildlife sanctuaries darker than usfs)
  • State land
  • Indigenous
  • Military
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
  • Map Markers
  • trail Trail Head
  • photo Photo
  • place Directory Listing
  • region Riding Area
  • Parking Parking
  • Viewpoint Viewpoint
  • Information Information
  • Warning Warning
  • Directions Directions
  • Water Fountain/Source Water Fountain/Source
  • Sight Sight
  • Restrooms Restrooms
  • Gate Gate
  • Camping Camping
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Table or Bench eBike Charging Point
  • Other Other
      Directions to bitterroot-rock-creek-divide-trail-313 trailhead (46.244320, -113.772430)
      update trails status or condition

      Bitterroot -... Trail Reports

      Jul 19, 2016 @ 6:16pm
      Jul 19, 2016
      Lots of trees down (100+). I cleared 10 or so out of the trail with my small hand saw, but a chainsaw or a few larger handsaws would be needed...
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 0 rides
      6 Months
      • 0 rides
      • 0 rides


      more »
      53 |
      Sep 12, 2018 @ 11:02am
      Sep 12, 2018
      Bitterroot - Rock Creek Divide...
      85 |
      Jul 19, 2016 @ 6:26pm
      Jul 19, 2016
      Bitterroot - Rock Creek Divide...
      75 |
      Jul 19, 2016 @ 6:25pm
      Jul 19, 2016
      | 1 comments Bitterroot - Rock Creek Divide...

      4 Reviews & Comments

      • + 1
      flag mt-powder (Jul 19, 2016 at 18:42)
       This is an awesome trail that just needs some love. This could easily be one of the greatest rides in the Missoula area (that I know of..) It needs to be cleared of downfall, but beyond that a (volunteer?) crew needs to pick rocks and perhaps bring some of the extensive stretches of wide single track back into form.

      It was clearly used as a motorized route for a long time, but being a non-motorized trail now, I suspect that the forest service would support restoring a singletrack character.

      Anybody interested in doing some volunteer work, let me know, I would be willing to organize the work crew and discuss options with the local forest service office!
      • + 1
      flag BrianSD (Jul 6, 2018 at 8:30)
       I am interested in clearing this trail this weekend (6/7/18 ) . Are there really 100+ trees down or is this a slight exaggeration? 605-639-1448
      • + 1
      flag BrianSD (Jul 6, 2018 at 8:32)
       I am interested in clearing this trail this weekend (6/7/18 ) . Are there really 100+ trees down or is this a slight exaggeration? 605-639-1448
      • + 1
      flag Blackhillsflow (Aug 19, 2018 at 7:13)
       To Dome Mt. is clear, which made a nice out and back from crystal creek. Fantastic high riding!

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