17.9 miles
2,636 ft
-2,644 ft
2 miles
High Point

The 505 is a hard 4x4 climb.
Start at the Nederland High School, head West on Eldora road until you get to the village of Eldora.
Climb 505 until it hurts, then keep going for a long way beyond your normal pain threshold.
When you get to the top, take the first right onto a smaller road and soon a left onto some flowy single track. Watch for moose and take your first right at an intersection with an old miners road to cross a stream. As soon as you cross the stream, take a left and head into the forest.
There are many turns until you come out on Caribou road. Climb Caribou road to the 4 way intersection and head North East on County Road 126, to Sherwood Forest.
Descend Sherwood to Mud Lake back entrance.
Do a couple of laps at Mud Lake and then head back to town using some of the Elementary School access trails.
Weasel through the rec center and then through town to get back to the High School.

This route is Unsanctioned, Ride at your own Risk!

Detailed Description
505 W Some Secrets, Sherwood, and Mud Lake is a 18 mile moderately popular intermediate unsanctioned route located near Nederland Colorado. This mountain bike only route can be used one direction and has a hard overall physical rating. This route includes 1 trails. This route climbs 2,636 ft with a max elevation of 10,218 ft then descends -2,644 ft.

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Trails in Route


  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
  • Route Type
  • Bike type
  • Direction
    One Direction
  • Physical rating
More Stats for 505 W Some Secrets, Sherwood, and Mud Lake mountain bike route
  • Altitude min
    8,238 ft
  • Altitude start
    8,429 ft
  • Altitude end
    8,422 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    10 miles
  • Distance down
    7 miles
  • Distance flat
    4,734 ft
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Trail Conditions
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Trail transparency
Caribou Tour, nederland, no music
Caribou Tour, nederland, no music
2:33 | 161 | comments: 0 | favs:
Feb 14, 2018
Back country skiing
Caribou Tour, nederland
Caribou Tour, nederland
2:35 | 69 | comments: 0 | favs:
Feb 14, 2018
Back country skiing

Recent Trail Reports Along Route

Caribou Flats 505.1 Jeep road
Jul 2, 2022 @ 8:20am
Jul 2, 2022
more reports »
  • By dholshouser & contributors
  • #20908 - 1,051 views