7.9 miles
Distance
1,448 ft
Climb
-1,487 ft
Descent
2 miles
High Point
-39 ft
Altitude change
7,136 ft
Altitude min
7,200 ft
Altitude start
7,162 ft
Altitude end
-0.1%
Grade
-55.9%
Grade max
44.7%
Grade min
4 miles
Distance climb
4 miles
Distance down
2,648 ft
Distance flat

Park at the trailhead and start up the gravel road. Horrible grind up this road, which eventually turns into double track until you reach the upper trailhead. Once you get all that altitude and tricky traverse through the forest and you get rewarded with a fun and fast descent along the river. Once you cross the river the trail opens up into a very wide path where you can pick fast lines or rocky lips.

Detailed Description
North Fork Loop is a 8 mile popular intermediate route located near Big Sky Montana. This mountain bike only route. This route includes 3 trails. This route climbs 1,448 ft with a max elevation of 8,587 ft then descends -1,487 ft.
Tags
River or creekRocky

Trail Issues on Route

  • Minor Issue / Yellow: 1 trail (newest: Oct 17, 2026)
Bike Park

Stats

  • Distance
    8 miles
  • Avg time
    1 hr 25 min
  • Altitude change
    -39 ft
  • Altitude min
    7,136 ft
  • Altitude start
    7,200 ft
  • Altitude end
    7,162 ft
  • Climb
    1,448 ft
  • Descent
    -1,487 ft
  • Grade
    -0.1%
  • Grade max
    -55.9%
  • Grade min
    44.7%
  • Distance climb
    4 miles
  • Distance down
    4 miles
  • Distance flat
    2,648 ft

2 Reviews & Comments


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Trails in Route

Details

  • Featured
  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
    Blue
  • Activity Logs
    36
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Trail transparency
  • Singletrack

Recent Trail Reports Along Route

statustraildateconditiondescription
North Fork Ridge Trail
Oct 17, 2026 @ 5:04pm (America/Denver)
Oct 17, 2026
Dry until about halfway up
North Fork Tie
Sep 9, 2026 @ 9:05pm (America/Denver)
Sep 9, 2026
Great shape
North Fork
Jun 30, 2026 @ 8:53pm (America/Denver)
Jun 30, 2026
We did a hike, cut one tree, too muddy to ride needs a couple days to dry out
more reports »
  • By toddTF Pro Trailforks & contributors
  • #2323 - 3,715 views

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