104.6 miles
16,197 ft
-16,199 ft
2 miles
High Point

In 2010 the northern section of the route for the Butte 100 Racecourse looked very different to what it does today before organizers decided to make the route "more compact".

The southern section of the route has remained very similar. However, since 2010 there have been trail re-routes/additions on Skeeboggan, Bear Gulch, and 8-miles of Hell. Placer/Eagles Nest Trail did not exist back then. The route also went up the steeper Grading Camp Trail, where as now it goes up the Chimney Trail (Upper Grading Camp).

Detailed Description
(Old) 2010 Butte 100 Racecourse is a 105 mile popular intermediate route located near Butte Montana. This mountain bike primary route can be used one direction and has a extreme overall physical rating. This route includes 24 trails. This route climbs 16,197 ft with a max elevation of 8,121 ft then descends -16,199 ft.
Local Trail Association
Local trail association
Highlands Cycling Club (www.bikebutte.org)
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Trail Products

7 Reviews & Comments

  • + 0
HHskier (Jul 11, 2022 at 6:56)
Nice rock formations. Trail is clear of downed trees as of July 2022.
  • + 0
bizango-x (Sep 5, 2020 at 19:00)
The worst sketchy part is just over the hill from the parking. That is unless you take the wrong turn like we did and head up and over the steep pipeline trail! It’s straight up and straight down.

This makes for a loop option to drop down to the Blacktail Ridge trailhead. From there you can take Blacktail Ridge to the Beaver Pond trail, then come back on the CDT.
  • + 1
Jough (Aug 22, 2020 at 11:32)
90% of what is shown as this trail is a paved street! There is only half a mile of double track at the very start of this, which might be rated blue. The other four and a half miles is easy pavement!
  • + 0
radbad (Jul 6, 2020 at 8:53)
July 1, 2020 Covered in deadfall and clouds of mosquitos. Very slow going.
  • + 0
Simia (May 10, 2020 at 14:10)
Trail was cleared and mostly dry. The Northside of the main summit had 5-6 snowy switchback patches.
  • + 1
MattinButte ATS (Aug 14, 2019 at 13:42)
This is a fun trail that looks like it gets a lot of traffic from dirt bikes and ATV's. For me the sketchy part about this trail is deep sections of loose sand. I think most intermediate level riders would be fine riding this trail because it's not too difficult if you just take it slow.
  • + 1
Flyplanes (Jul 17, 2019 at 12:39)
Rode from TH at Hwy 90 as an out-n-back. 5 miles up takes you to ridge line with excellent views of Butte MT and the valley. Trail is very well designed with switchbacks and nice tight single track. Trail was damp in places due to recent afternoon rain showers.


  • Riding area
  • Primary Activity
    Mountain Bike
  • Other Activities
    • Horse
    • Hike
    • Trail Running
  • Difficulty rating
  • Route Type
  • Direction
    One Direction
  • Physical rating
More Stats for (Old) 2010 Butte 100 Racecourse mountain bike route
  • Altitude min
    5,067 ft
  • Altitude start
    6,339 ft
  • Altitude end
    6,339 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    45 miles
  • Distance down
    52 miles
  • Distance flat
    7 miles
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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
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  • Snow Cover Inadequate
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
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  • Variable
  • Ideal
  • Dry
  • Very Dry
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Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
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Jump Magnitude Heatmap
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youtuber The Butte 50 MTB Race
The Butte 50 MTB Race
28:56 | 66 | comments: 0 | favs:
Jul 20, 2022

Recent Trail Reports Along Route

CDT - Nez Perce Trail
Oct 16, 2022 @ 9:49am
Oct 16, 2022
CDT - Pipestone-Homestake
Oct 2, 2022 @ 5:01pm
Oct 2, 2022
Riding great! There are a couple of trees that you have to duck low to get under that would be nice to have removed. reporter
Grading Camp Trail
Sep 29, 2022 @ 6:36am
Sep 29, 2022
Blacktail Access
Sep 29, 2022 @ 6:35am
Sep 29, 2022
Basin Creek Rd
Sep 26, 2022 @ 2:54pm
Sep 26, 2022
Just our local road to the Basin Creek Reservoir park . Paved road, not much car/truck traffic. Beautiful wea.
more reports »
  • By MattinButte ATS HCC & contributors
  • #32085 - 170 views