987 ft
7 ft
-205 ft
Avg time


  • Riding area
    Duluth, Minnesota
  • Difficulty rating
    Double Black Diamond
  • Trail type
  • Bike type
    DH, AM
  • Trail Usage
    Biking Primary
  • Direction
    Downhill Only
    Popular direction shown
  • Climb Difficulty
    Double Black Diamond
  • Physical rating
  • eBike Allowed
  • TTFs on trail
    Rock Face
  • Global Ranking
  • Land Manager

Starting from the rock dome at the top, descend NIMBY briefly before almost immediately encountering the first sign (on your right) for BOB. Veer right at the sign and begin the steep decent.

The first hundred feet or so are in among aspen trees. After the first big roll-down (a very long, steep, rock slab) the trail falls quickly down onto a more exposed, rocky ridge. This lower portion of the track is very rocky and wheel placement is critical if you're going to stay on your rig. The trail continues down the edge of a mild rock ridge as it quickly eats up the remaining elevation before gently spitting you out on the shoulder of Skyline Parkway (paved road).

From the bottom, your best option back up to the top is the trail Skyline.

NOTE - winter riding: many of the most difficult trails at Piedmont are much "lower-consequence" in the winter and may be doable an an average fat-bike with less risk than summertime riding. However, these trails are rarely packed/ridden, so watch for good weather conditions resulting in packed (but not icy) snow, or hit the trail with some snowshoes the day before your ride.

Local Trail Association
More Stats for BOB (Bones Of the Beast) mountain bike trail
  • Altitude change
    -199 ft
  • Altitude min
    1,073 ft
  • Altitude max
    1,271 ft
  • Altitude start
    1,271 ft
  • Altitude end
    1,073 ft
  • Grade max
  • Grade min
  • Distance climb
    51 ft
  • Distance down
    920 ft
  • Distance flat
    16 ft
  • Avg time
  • view trail stats
on Oct 30, 2017
Freeze/thaw Cycle
Avg: 5 (3 votes)

view (95)
Layers winter
Trail Style
  • ?
Directions to bob-bones-of-the-beast trailhead (46.767680, -92.153440)
update trails status or condition

BOB (Bones Of... Trail Reports

Oct 30, 2017 @ 12:23pm
Oct 30, 2017
reporter snow.
Oct 10, 2017 @ 10:44am
Oct 10, 2017
Oct 2, 2017 @ 5:41am
Oct 2, 2017
reporter rain :(
Sep 22, 2017 @ 9:21am
Sep 22, 2017
reporter Deluge
Sep 20, 2017 @ 6:06am
Sep 20, 2017
reporter Heavy rains overnight :(
view all reports »


more »
169 |
Apr 25, 2016 @ 9:12am
Apr 25, 2016
BOB (Bones Of the Beast)
155 |
Apr 25, 2016 @ 9:11am
Apr 25, 2016
BOB (Bones Of the Beast)
140 |
Apr 25, 2016 @ 9:10am
Apr 25, 2016
BOB (Bones Of the Beast)
287 |
Oct 27, 2015 @ 5:55pm
Oct 27, 2015
BOB (Bones Of the Beast)

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