2 miles
1,638 ft
-266 ft
1 miles
High Point
Trail Supporters, Builders & Maintainers of Mount Mastiff Trail

Mount Mastiff Details

  • Riding area
    Nason Ridge
    Leavenworth, Washington
  • Difficulty rating
    Double Black Diamond
  • Trail type
  • Bike type
    AM, Fat
  • Trail Usage
  • Direction
    Both Directions
  • Climb Difficulty
    Double Black Diamond
  • Physical rating
  • Alpine Trail
  • Global Ranking

The climbers path up Mount Mastiff offers adventure for the alpine seeking adventurist and the foolhardy. If the first half of this trail did not already involve enough hike-a-bike, then the second and much harder half will get you your share. Climbing the Southeast ridge, the first half allows access to some unique views not found on much of the rest of the Nason Ridge trail system.

Perhaps use the trail to access the first knoll allowing you to look North into the valley and lakes below. This would make for a great primitive camp spot during late summer!

Trail not recommended for 99% of you. But for the 1% who seeks the adventure and access to high mountain views and slabs of rock, this is one unique option to Washington State.

Access Info

Access off of the North Nason Ridge Trail

This trail is Unsanctioned, Ride at your own Risk!


Don't do it. But if you do, plan for being REALLY far out there. With Fall Hazard.

More Stats for Mount Mastiff mountain bike trail
  • Altitude change
    1,372 ft
  • Altitude min
    5,371 ft
  • Altitude start
    5,371 ft
  • Altitude end
    6,743 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    2 miles
  • Distance down
    1,812 ft
  • Distance flat
    187 ft
  • view trail stats
Avg: 2 (1 votes)

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Directions to mount-mastiff trailhead (47.797755, -120.913937)
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