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Fourmile Link

Intermediate Intermediate
 3.8 (23)
  1. Areas
  2. CO
  3. …Front Range
  4. …Boulder
  5. Betasso Preserve
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“A good trail used to create varying rides in Betasso Preserve. ”

Nick Wilder
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0.8

Miles

1.3

KM
Singletrack

6,309' 1,923 m

High

6,153' 1,875 m

Low

177' 54 m

Up

126' 38 m

Down

7%

Avg Grade (4°)

24%

Max Grade (13°)

Dogs Unknown

E-Bikes Not Allowed

CLOSED starting 5/5/25 for 4-6 weeks while stairs are replaced.

Closed to bikes on Wednesday and Saturdays.

Description

Newly built in 2011, this beautifully made trail connects Fourmile Canyon Road to the Betasso Trail system. This particular stretch of trail is not a destination by itself, but it's a great addition to the Betasso system and gives you more options when planning a ride in the area.

There is one short section of stone stairs that almost everyone will have to walk.

Contacts

Local Club: Boulder Mountainbike Alliance

Nov 17, 2025: Trail Update: South St Vrain

Nov 14, 2025: Another Step Closer to new Betasso Connector

Oct 24, 2025: Boulder County Moves One Step Closer to a Safer Boulder-to-Betasso Connection

Land Manager: Boulder County, CO - Parks and Open Space

Shared By:

Nick Wilder with improvements by Zander Göpfert
Full Details

Trail Ratings

  3.8 from 23 votes

#4

in Betasso Preserve

#7365

Overall
  3.8 from 23 votes
5 Star
22%
4 Star
43%
3 Star
30%
2 Star
0%
1 Star
4%
Trail Rankings

#4

in Betasso Preserve

#652

in Colorado

#7,365

Overall
4 Views Last Month
3,656 Since Dec 5, 2012
Intermediate Intermediate
0%
0%
95%
0%
5%
0%
Add a Photo

Photos

Cruising down the Benjamin Loop.
Jun 9, 2015 near Boulder, CO
Yeah, maybe my video sucks, but the point is that the trail is fun!
May 15, 2016 near Boulder, CO
Some amazingly fancy stone stairs on a short section of the Fourmile Link
Dec 5, 2012 near Boulder, CO
A solid climb up smooth trail in Betasso
Dec 5, 2012 near Boulder, CO
Cruising over the nice new bridge over Fourmile Creek
May 21, 2013 near Boulder, CO
Old car right off the side of Fourmile Link.
Jun 15, 2019 near Boulder, CO

0 Comments

Weather

Current Trail Conditions

All Clear 2 days ago
Add Your Check-In

Check-Ins

Apr 21, 2024
Caleb Perkins
May 16, 2023
Mike Benam
Sep 18, 2022
Katie Dederer
May 19, 2022
natelav89
Sep 3, 2020
Nicholas Horan
Beautiful and great flow, two staircases to hike a bike. 0.8mi — 0h 10m
Mar 8, 2020
Kons Kourbatov
Added this little gem to the whole Betasso Preserve loop with AC. 8.8mi — 2h 08m
Jul 28, 2019
Andy McEvoy
Jul 23, 2018
Daylene York
1.6mi

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