4.7
(4014)
18,402
riders
01:27
12.6km
420m
Mountain biking
The Walker Ranch Loop is a challenging 7.8-mile mountain bike trail with 1370 feet of gain, featuring technical terrain and scenic views.
Last updated: February 26, 2026
Tips
Includes a very steep uphill segment
You may need to push your bike.
After 11.1 km for 623 m
Waypoints
Start point
Get Directions
5.22 km
Highlight • MTB Park
Tip by
12.6 km
End point
Way Types & Surfaces
Way Types
12.1 km
392 m
< 100 m
< 100 m
Surfaces
12.5 km
104 m
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Elevation
Highest point (2,240 m)
Lowest point (1,980 m)
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Weather
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Today
Saturday 9 May
17°C
5°C
0 %
Additional weather tips
Max wind speed: 23.0 km/h
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This route was planned by komoot.
The average mountain biker can expect to complete the 7.9-mile (12.6 km) Walker Ranch Loop in approximately 1 hour and 27 minutes. However, due to its challenging nature and technical sections, your actual time may vary depending on your fitness level and how often you stop to enjoy the views or navigate obstacles.
No, the Walker Ranch Loop is generally considered a challenging trail, rated as moderate to difficult, and is not recommended for beginners. It features technical rocky sections, steep climbs and descents, and an unavoidable hike-a-bike section, requiring good fitness and advanced riding skills.
The terrain is highly varied, offering a mix of singletrack and doubletrack. You'll encounter rocky sections, steep ascents and descents, tight switchbacks, and some loose, sandy areas, especially in summer. A notable feature is a very steep, stair-stepped section, often called 'the Wall,' leading down to South Boulder Creek, which requires dismounting and carrying your bike.
The trailhead for the Walker Ranch Loop is located approximately 7 miles west of Boulder, Colorado. Parking is available at the trailhead, which is often situated at a high point within a burn zone. It's advisable to arrive early, especially on weekends, as parking can fill up quickly.
No, there are no specific permits or entrance fees required to access the Walker Ranch Loop trail within Walker Ranch Park. However, it's always a good idea to check the Boulder County Parks & Open Space website for any updated regulations or advisories before your visit.
Yes, dogs are generally allowed on the Walker Ranch Loop. However, they must be kept on a leash at all times, and owners are responsible for cleaning up after their pets. Please practice good trail etiquette and be mindful of other users, including horseback riders.
The best time to ride is typically in the spring and fall when temperatures are milder. Summer can be very hot, and some sections may become loose and sandy. Winter riding is possible but can be challenging due to snow and ice, and trail conditions should be checked beforehand.
You'll experience breathtaking scenery, including diverse ecosystems, deep forests, and open areas with expansive views. The route takes you alongside the fast-moving South Boulder Creek at its lowest elevation, and offers open panoramas near Gross Dam road. The trailhead itself is often in a burn zone, adding to the unique landscape.
Absolutely. The most notable challenge is the infamous 'hike-a-bike' section, a steep, stair-stepped descent to South Boulder Creek that is unrideable. The trail also features technical rocky sections, demanding climbs, and rewarding descents. The varied terrain and stunning Colorado scenery make it a classic mountain biking adventure.
Yes, the route intersects with several other paths. While primarily following the Walker Ranch Loop trail, it also passes through sections of the Josie Heath Trail, Ethel Harrold Road, Eldorado Canyon Trail, Fisherman's Access Trail, and Dale's Trail.
The trail can be ridden clockwise or counter-clockwise, with each direction offering a distinct experience. Riding it in one direction might present different challenges for climbs and descents compared to the other, so experienced riders often try both to see which they prefer.