4,281 ft
Distance
234 ft
Climb
-203 ft
Descent
00:09:12
Avg time

Fourmile Link Details

  • Activities
    • Mountain Bike
    • Hike
    • Trail Running
  • Riding Area
    Betasso Preserve
    Boulder, Colorado
  • Difficulty Rating
    Blue rate
  • Trail Type
    Singletrack
  • Direction
    Both Directions
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Trail Visibility
    Always easy to follow
  • Dogs Allowed
    Yes
  • eBike Allowed
    No
  • Global Ranking
    #9051 in Mountain Biking [+]
    • #43690 in Trail Running
    • #23517 in Hiking
  • Local Popularity
    75 in Mountain Biking [+]
    • 55 in Trail Running
    • 55 in Hiking
  • Land Owner
    Boulder County Parks & Open Space

Trail trail is a bi-directional link from Four Mile Canyon road to the Benjamin Loop at Betasso. Trail is blue intermediate but there are two small staircases that most people walk.

Access Info

The Fourmile Link can be accessed 2.7 miles up Fourmile Canyon Drive from Boulder Canyon Drive. Look for a small pullout and a guardrail on the south side of the road.

Disclaimer

Trail closed to bikes on Wednesday and Saturdays.

Local Trail Association
Traditionally Indigenous Territory
More Stats for Fourmile Link multi-use trail trail
  • Altitude change
    31 ft
  • Altitude min
    6,137 ft
  • Altitude max
    6,304 ft
  • Altitude start
    6,268 ft
  • Altitude end
    6,299 ft
  • Grade
    0.7%
  • Grade max
    -51.5%
  • Grade min
    31.2%
  • Distance climb
    2,221 ft
  • Distance down
    1,591 ft
  • Distance flat
    469 ft
  • Avg time
    00:09:12
  • Avg reverse time
    00:09:57
  • view trail stats
Status:
on Jun 8, 2025
Ideal
Avg: 4.26 (5 votes)
Your vote: 0

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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
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Radar Time
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  • hiking (1 year)
  • moto (1 year)
Activity Recordings
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  • Nordic Ski
  • Snowmobile
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      Directions to fourmile-link trailhead (40.038260, -105.350730)
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      Fourmile Link Trail Reports

      statusdatedescription
      Jun 8, 2025 @ 9:27am
      Jun 8, 2025
      May 23, 2025 @ 8:52am
      May 23, 2025
      		 reporter Stairs maintenance has been completed, trail is open. Please update conditions if you ride.
      May 6, 2025 @ 1:31pm
      May 6, 2025
      		Closed until June 13th while they replace some stairs
      Apr 6, 2025 @ 2:06pm
      Apr 6, 2025
      		 Rideable but slippery and a mixture of muddy spots and dry spots with the snow. Probably needs a few days
      Jan 18, 2025 @ 9:11am
      Jan 18, 2025
      		 reporter From Betasso Ranger, "About a foot of fresh snow at Betasso. "
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 2 rides
      • 20 miles avg distance
      6 Months
      • 39 rides
      • 19 miles avg distance
      All
      • 241 rides
      • Last: Jul 8, 2025

      Technical Trail Features (TTF)

      Photos

      more »
      490 |
      Apr 13, 2018 @ 7:40am
      Apr 13, 2018
      152 |
      Aug 8, 2019 @ 12:46pm
      Aug 8, 2019
      174 |
      Aug 8, 2019 @ 12:34pm
      Aug 8, 2019
      154 |
      Aug 8, 2019 @ 12:30pm
      Aug 8, 2019

      Routes with this trail

      titledistance
      Super Betasso via Four Mile featured15 miles

      Trail Products

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      Betasso Preserve

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