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Panorama on Betasso Preserve mountain biking trail near Boulder, Colorado

Betasso Preserve Route Guide

Difficulty
This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
Hard
Elevation
This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
665 m
Distance
This reflects the return distance of this route as measured by the GPS file.
15 km
Duration
This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
1.5-2.5h
User Ratings
These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
Advanced (Diamond)
Suitable for advanced experience level looking for a solid adventure.
Physical DIFF
Intermediate (Square)
Suitable for intermediates who are ready for a little bit more adventure.
Technical DIFF
Directions to Trailhead
Betasso Preserve is a great all-around MTB trail with enough challenges to keep it interesting and test your riding skills. The trail is located conveniently close to downtown Boulder, it is a must do, and one of the best all-around MTB trails we know!

Route Description for Betasso Preserve

*Bikes are prohibited Wednesdays and Saturdays, Hikers Only*

There are two loop trails; Canyon Loop (5.3 km) and Benjamin Loop (3.9 km) and one out-and-back ‘connector’ trail called Betasso Link Trail. The riding directions on the loops vary daily; look for signs at the trailhead indicating the riding direction for the day. The loops are fun and flowy on the downhill sections and moderately rocky and steep on the uphill sections. The loops offer great views of Four Mile Canyon and the surrounding Front Range.

Starting at Betasso Link Trail, it is a short section (2.1 km) of trail that is steep and difficult and is on a totally different level than the rest of Betasso.

Connect with the Canyon Loop riding in the direction indicated for the day. Riding down into the Canyon is fast and technical, with many challenges.

At the top of Canyon Loop trail, connect with Benjamin Loop, again riding in the direction indicated for that day. Benjamin Loop is a newer addition to the local trails, and sure adds a lot of fun! Continuing with the nice flow of the Canyon Loop, it takes you through more varied terrain. Heading through forest and parts of trail carved into rock, be sure to give a little thanks to all the volunteers who made this awesome new addition a reality!

Head back down Canyon Loop in the appropriate direction, enjoying the gentle ride before the up hill, lung busting challenge of stamina and skill on Betasso Link Trail back to the car park.

Close to Boulder? Browse more Colorado mountain bike trails.

Insider Hints for Betasso Preserve

  • Many locals ride from Downtown Boulder up the canyon to the Betasso Link Trail; this can be sketchy with traffic along the canyon road so use caution!
  • Bikes are prohibited Wednesdays and Saturdays, Hikers Only.
  • RTD Bus Service will drop you off at Sugarloaf Rd. and the bus has a bike rack.

Getting to the Betasso Preserve Trailhead

From Boulder, take Canyon Dr. (119) into Boulder Canyon. Approximately 4.8 km up the canyon, on the right, there is a small road side parking area at the trailhead for Betasso Link Trail just before entering the tunnel. Or continue further up the canyon to Sugarloaf Road and follow the signs for Betasso Preserve turning right onto Betasso Road.

Route Information for Betasso Preserve

  • Route Signage:

    Good

  • Crowd Levels:

    High

  • Route Type:

    Loop

Betasso Preserve Elevation Graph

Weather Forecast

Check Area Weather

Reviews for Betasso Preserve

9.3
6 reviews
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Tom GregoryAugust 2020

One of the best trails, decent climbing and partially technical

Overall Rating
10
Technical Difficulty
Intermediate (Square)
Suitable for intermediates who are ready for a little bit more adventure.
Physical Difficulty
Advanced (Diamond)
Suitable for advanced experience level looking for a solid adventure.
Mary LouJune 2020

Such a serene place. Love the peaceful atmosphere despite the crowds.

Overall Rating
10
Technical Difficulty
Easy (Circle)
Suitable for beginners, families, young children, and those looking for a casual adventure.
Physical Difficulty
Easy (Circle)
Suitable for beginners, families, young children, and those looking for a casual adventure.
Annie SmithMay 2019

Definitely prefer biking Betasso Preserve over hiking, but its a great trail either way.

Overall Rating
8
Technical Difficulty
Intermediate (Square)
Suitable for intermediates who are ready for a little bit more adventure.
Physical Difficulty
Advanced (Diamond)
Suitable for advanced experience level looking for a solid adventure.
Kelly U RMay 2019

Betasso Preserve is a good challenge. It does need some experience so I would not recommend it for beginner bikers.

Overall Rating
9
Technical Difficulty
Intermediate (Square)
Suitable for intermediates who are ready for a little bit more adventure.
Physical Difficulty
Advanced (Diamond)
Suitable for advanced experience level looking for a solid adventure.
Lisa BMay 2019

Loved the Betasso Preserve ride!

Overall Rating
9
Technical Difficulty
Intermediate (Square)
Suitable for intermediates who are ready for a little bit more adventure.
Physical Difficulty
Advanced (Diamond)
Suitable for advanced experience level looking for a solid adventure.
RocKingMay 2019

Betasso Preserve ride was cool! Really challenging. Loved it.

Overall Rating
10
Trip Length
002:30
Technical Difficulty
Intermediate (Square)
Suitable for intermediates who are ready for a little bit more adventure.
Physical Difficulty
Advanced (Diamond)
Suitable for advanced experience level looking for a solid adventure.

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Last Updated: July 20, 2026

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