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.

Trail Issues on Route

  • Minor Issue / Yellow: 1 trail (newest: Jun 24, 2026)
Bike Park

Stats

  • Distance
    8 miles
  • Avg time
    1 hr 24 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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    Recent Trail Reports Along Route

    statustraildateconditiondescription
    North Fork
    Jun 30, 2026 @ 8:53pm (America/Denver)
    2 days
    We did a hike, cut one tree, too muddy to ride needs a couple days to dry out
    North Fork Tie
    Jun 30, 2026 @ 8:52pm (America/Denver)
    2 days
    North Fork Ridge Trail
    Jun 24, 2026 @ 7:31pm (America/Denver)
    Jun 24, 2026
    One tree down right along the top, big hand saw would do
    more reports »
    • By toddTF Pro Trailforks & contributors
    • #2323 - 3,500 views

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