99.9 miles
15,590 ft
-15,563 ft
2 miles
High Point

This is an old or incorrect version of the Butte 100 Racecourse. Please refer to the current course here: Butte 100 MTB Racecourse 2021

Detailed Description
(OLD) Butte 100 Race Course is a 100 mile intermediate race route located near Butte Montana. This mountain bike only route can be used one direction and has a hard overall physical rating. This route includes 19 trails. This route climbs 15,590 ft with a max elevation of 7,921 ft then descends -15,563 ft.
Local Trail Association
Local trail association
Highlands Cycling Club (www.bikebutte.org)
Please consider joining or donating to the local riding association to support trail development & maintenance.
donate to earn trail karma!

Trail Products

Past Events

12 Reviews & Comments

  • + 0
HHskier (Jul 11, 2022 at 6:56)
Nice rock formations. Trail is clear of downed trees as of July 2022.
  • + 1
wyomont (Feb 6, 2022 at 11:38)
Trail John's Gulch
Dog owners beware:
The bridges on this trail can be a leg entrapment hazard for our 4 legged companions.
  • + 0
bizango-x (Sep 3, 2021 at 21:40)
Trail has had a lot of work done to it since the last time we rode it. The top is rerouted and re-benching and drainage has been done. This has definitely helped.

We rode down this time and it was fun. There are some steep spots if you’re riding up.
  • + 0
kirkastroth (Jul 2, 2021 at 9:10)
Trail is open, clear and great to ride. Very smooth and great vistas of the Butte Valley.
  • + 1
mtcanuck (May 9, 2021 at 21:11)
Lime kiln CDT is clear and snow free up to the Toll Canyon trail intersection. From there to the cattle guard/road there are over a dozen trees and plenty of snow.
  • + 1
MattinButte ATS (May 21, 2021 at 18:29)
Hey mtcanuck,
Thanks for commenting on the trail conditions! In the future I recommend doing this as a trail report as this is the official way to view and update status and condition of trails on Trailforks.
  • + 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
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.
  • + 0
bizango-x (Aug 21, 2019 at 19:17)
Trail is a bit rutted in places. It wasn’t a bad climb up, but it is steepish in places. It was a good option for looping the rail grade with Blacktail Ridge and Beaver Pond.
  • + 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.


  • Race Course
  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
  • Route Type
  • Direction
    One Direction
  • Physical rating
More Stats for (OLD) Butte 100 Race Course mountain bike route
  • Altitude min
    5,016 ft
  • Altitude start
    6,305 ft
  • Altitude end
    6,332 ft
  • Grade max
  • Grade min
  • Distance climb
    47 miles
  • Distance down
    47 miles
  • Distance flat
    5 miles
no votes yet
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Inadequate
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Flow (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%
  • bi-directional trail
  • no data
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 intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Contribute Details
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular
Max Vehicle Width

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
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.

Save the current map location and zoom level as your default home location whenever this page is loaded.

Trail transparency

Recent Trail Reports Along Route

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
Blacktail Access
Sep 29, 2022 @ 6:35am
Sep 29, 2022
Skeeboggen Trail
Sep 29, 2022 @ 6:34am
Sep 29, 2022
All good reporter
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.
CDT - 8 Miles of Hell
Sep 6, 2022 @ 9:09am
Sep 6, 2022
Highlands Camp to Pipestone pass is clear. 15 more trees cleared from recent fall.
more reports »
  • By todd Trailforks & contributors
  • #6319 - 1,206 views