39.3 miles
3,856 ft
-6,622 ft
2 miles
High Point

The climb out of the Platte river and again to Lennys Rest is hard if you're not in shape for it.

Ride the Colorado Trail from the Lost Creek Wilderness closure all the way to Denver. Don't forget that you can get water at the Fire Station at the begining of CT 2 just after crossing Hwy 126.

Detailed Description
Colorado Trail 321 is a 39 mile moderately popular intermediate route located near Bailey Colorado. This mountain bike only route can be used one direction and has a hard overall physical rating. This route includes 9 trails. This route climbs 3,856 ft with a max elevation of 8,295 ft then descends -6,622 ft.
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9 Reviews & Comments

  • + 0
dpsummers44 (Jul 13, 2020 at 12:15)
No Ebikes due to animal disruptions. protected big horn sheet area.
  • + 1
sasunde (Jan 10, 2022 at 7:14)
Not true. The only animal disruption was a few years back when a cyclist (not an e-bike) tried to take a selfie with some bear cubs. Momma bear did not approve. The entire trail was closed to the public for the remainder of the year. The ban on e-bikes is solely due to Denver Water wanting to limit as many people as possible and they figured e-bikes were an easy target. They blame the Forest Service, even though USFS rules would permit e-bikes on Forest Service roads. E-bikes may be ridden by riders with a disability tag or a letter from Denver Water claiming a disability. Bicycle Colorado, Bike JeffCo and Bike DougCo oppose this ban and are appealing to the USFS and Denver Water. Under Colorado Revised Statutes, Jefferson County and Douglas County Ordinance, Denver Mountain Parks Policy and USFS policy, this road should be open to e-bikes. Ultimately, a law suit against Denver Water may be pursued.
  • + 1
dpsummers44 (Jan 10, 2022 at 8:20)
oh goodness. do what you gotta do then.
  • + 0
colorado-biker-bob (Jul 4, 2020 at 7:26)
Signage now states e-bikes prohibited.
  • + 0
JimmyHick (May 21, 2020 at 11:52)
easy trail up until you get to the single track. Good for beginners.
  • + 1
mtbyetico (May 9, 2018 at 8:20)
Did the Wilderness Boundary change? It used to be further west than the road by less than a mile.
  • + 1
mtbyetico (May 9, 2018 at 8:20)
Did the Wilderness Boundary change? It used to be further west than the road by less than a mile.
  • + 1
mtbyetico (May 9, 2018 at 8:20)
Did the Wilderness Boundary change? It used to be further west than the road by less than a mile.
  • + 0
Zachjackson (Mar 24, 2018 at 20:25)
Easy warm up climb up Waterton canyon road. At about 7 miles you enter the single track portion. Good climb and beautiful scenery along with it. Ends with a lengthy downhill.


  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
  • Route Type
    Point to Point
  • eBike Allowed
  • Bike type
    AM, XC, Fat
  • Direction
    One Direction
  • Physical rating
  • Ridelogs
More Stats for Colorado Trail 321 mountain bike route
  • Altitude change
    -2,765 ft
  • Altitude min
    5,508 ft
  • Altitude start
    8,279 ft
  • Altitude end
    5,512 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    13 miles
  • Distance down
    23 miles
  • Distance flat
    3 miles
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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Inadequate
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
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x Activity Recordings
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  • mountain biking recent
  • mountain biking (>6 month)
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  • moto (1 year)
Activity Recordings
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Recent Trail Reports Along Route

CT - Platte Canyon
Nov 8, 2022 @ 10:27am
Nov 8, 2022
CT - Waterton Canyon
Nov 8, 2022 @ 2:27am
Nov 8, 2022
CT - Buffalo Creek
Apr 3, 2022 @ 1:23pm
Apr 3, 2022
a couple spots of trees down across the trail, very passable. on north-facing downhill, large patches of snow/ice. other spots are dry or hero dirt
CT - Raleigh Peak
Nov 7, 2021 @ 9:47am
Nov 7, 2021
Very dry; kitty litter gravel. Some trail washout/erosion in the burn area.
Forest Road
Sep 13, 2020 @ 8:38am
Sep 13, 2020
more reports »
  • By Osue077 & contributors
  • #22068 - 404 views