17.2 miles
3,446 ft
-4,453 ft
2 miles
High Point

Amazing ride from the Hyalite Reservoir parking lot up and over Blackmore then down the South Cottonwood drainage. The route up Blackmore has a lot of hike a bike and in early summer there is snow on the north facing switchbacks.

Detailed Description
Blackmore to South Cottonwood is a 17 mile popular expert route located near Bozeman Montana. This mountain bike primary route can be used both directions and has a extreme overall physical rating. This route includes 4 trails. This route climbs 3,446 ft with a max elevation of 9,650 ft then descends -4,453 ft.
Local Trail Association
Local trail association
Southwest Montana Mountain Bike Association (www.southwestmontanamba.org)
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12 Reviews & Comments

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  • Riding area
  • Primary Activity
    Mountain Bike
  • Other Activities
    • Horse
    • Hike
    • Trail Running
  • Difficulty rating
    Black Diamond
  • Route Type
  • eBike Allowed
  • Bike type
    AM, XC, Fat
  • Direction
    Both Directions
  • Physical rating
  • Ridelogs
More Stats for Blackmore to South Cottonwood mountain bike route
  • Avg time
    5 hr 50 min
  • Altitude change
    -1,008 ft
  • Altitude min
    5,716 ft
  • Altitude start
    6,723 ft
  • Altitude end
    5,715 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    6 miles
  • Distance down
    9 miles
  • Distance flat
    2 miles
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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
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Radar Time
x Activity Recordings
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  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
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  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
  • Snowmobile
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Recent Trail Reports Along Route

South Cottonwood (Lower)
Oct 18, 2023 @ 6:53pm
Oct 18, 2023
Minor mud puddles up to 3rd bridge reporter
South Cottonwood (East Branch)
Sep 12, 2023 @ 5:32am
Sep 12, 2023
3 downed trees, but you can easily ride around 2. Thanks to whoever cleared this!
South Cottonwood (Upper)
Jul 27, 2023 @ 5:30pm
Jul 27, 2023
Tree free. reporter
Blackmore to Reservoir Connector
Jul 23, 2023 @ 5:34am
Jul 23, 2023
A few downed trees, the trail is in as good of condition as possible, but a lot of dirt has gone missing in the last few years!
more reports »
  • By generaldudebro SWMMBA & contributors
  • #29765 - 941 views