27 miles
8,361 ft
-8,368 ft
3,716 ft
High Point

This is a bit of a classic Nelson back country loop. This route goes from Brook Street, up to the Dun Mountain Saddle, then to the summit of Dun Mountain, down to the Little Twin climb, to Little Twin summit then dropping down via Dew Lakes to the Maitai Dam and back along Maitai Valley Road. Give it between 5-7hrs depending on fitness, weather and if you want to hang around at the top. It's very exposed on the summit of Dun Mountain so definitely take a god amount of kit. EPIRB recommended as well as usual back country planning stuff. The descents are grade 5 and well worth the trip. Scenery goes from native to alpine, to native and everything in between. No signs after Dun Saddle so be prepared with map/offline route etc.

Basic overview - ride up Dun Mountain Trail to the saddle (grade 3), then carry up to the Dun Mountain summit, descend from summit (grade 4), ride/hike up Little Twin, descend Little Twin (grade 5) to Dew Lakes. Descend Dew Lakes (grade 5) to Maitai Dam. Ride back to Nelson on the Maitai Valley Road.

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Trails in Route


  • Difficulty rating
    Black Diamond
  • Route Type
  • Bike type
    AM, XC
  • Direction
    One Direction
  • Physical rating
More Stats for Dun Mountain, Little Twin, Dew Lakes mountain bike route
  • Altitude min
    3 ft
  • Altitude start
    101 ft
  • Altitude end
    93 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    12 miles
  • Distance down
    13 miles
  • Distance flat
    1 miles
Avg: 3 (2 votes)
Layers winter
Map Style
Trail Style
  • ?
Trail transparency

Recent Trail Reports Along Route

Dec 5, 2017 @ 12:21pm
Dec 5, 2017
Dun Mountain Trail
Dec 4, 2017 @ 12:17am
Dec 4, 2017
Dew Lakes track
Nov 26, 2017 @ 10:07am
Nov 26, 2017
This is neither a purpose-built nor designated mountain biking trail and frankly I'm astonished to see it here. This has long been a popular walking track and, passing through the Nelson Mineral Belt, has high conservation values. I'm also very concerned about the safety of walkers as in many places there is simply nowhere to go get out of the way. As a keen mountain biker and walker I have access to countless tracks and trails and cannot see how this entry makes it onto Trail Forks. I'd appreciate some feedback on this entry.
Summit Ascent
Jul 16, 2017 @ 1:22am
Jul 16, 2017
Closed for logging
more reports »
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