4.6
(3964)
15,902
riders
05:07
52.0km
1,190m
Mountain biking
The Heil, Hall, and Picture Rock Loop is a difficult 32.3-mile mountain biking trail with 3890 feet of gain, offering technical terrain and
Last updated: February 26, 2026
Tips
Includes a very steep uphill segment
You may need to push your bike.
After 23.1 km for 254 m
Waypoints
Start point
Parking
Get Directions
26.1 km
Highlight (Segment) • MTB Park
Tip by
31.7 km
Highlight (Segment) • Trail
Tip by
52.0 km
End point
Parking
Way Types & Surfaces
Way Types
43.4 km
4.25 km
2.13 km
1.73 km
402 m
< 100 m
< 100 m
Surfaces
45.2 km
5.97 km
692 m
162 m
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Elevation
Highest point (2,070 m)
Lowest point (1,630 m)
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Weather
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Today
Thursday 28 May
20°C
9°C
56 %
Additional weather tips
Max wind speed: 9.0 km/h
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This route was planned by komoot.
This challenging mountain biking loop typically takes around 5 hours and 6 minutes to complete. However, your actual time may vary depending on your skill level, fitness, and how often you stop to enjoy the views or navigate technical sections.
The overall loop is rated as difficult due to its length and technical sections, particularly the upper, rocky parts of the Picture Rock Trail. While some sections within Heil Valley Ranch, like the Overland Loop and Schoolhouse Loop, are considered easier and family-friendly, the full loop is best suited for experienced and fit mountain bikers.
The terrain is highly varied, featuring characteristic Front Range rockiness throughout. The Picture Rock Trail offers a 'Jekyll and Hyde' experience: the upper section is quite rocky and technical with constant small rocks and larger obstacles, while the lower section transitions into a smoother, more flowy, and faster 'swoop-fest' with red-dirt mini-canyons. Heil Valley Ranch trails also have significant rockiness interspersed with some buff sections, undulations, and swooping turns.
Parking is available at various trailheads that access the Heil Valley Ranch and Hall Ranch systems, which form part of this loop. Specific parking details can often be found on the Boulder County Parks & Open Space website. It's advisable to check their site for the most current information on trailhead access and parking availability.
Yes, a permit is required for mountain biking in Heil Valley Ranch and Hall Ranch. You can find information on how to obtain permits and any associated fees on the Boulder County Parks & Open Space website: bouldercounty.gov. It's always best to check their official site before your ride for the most up-to-date regulations.
The best time to ride this loop is typically from spring through fall when the weather is mild and trails are dry. During these seasons, you'll experience the full beauty of the Front Range views and forested areas. Winter conditions can bring snow and ice, making many sections unrideable or significantly more challenging.
Regulations regarding dogs can vary within Boulder County Parks & Open Space. While some trails may allow dogs on leash, others might have restrictions. It's crucial to check the specific rules for Heil Valley Ranch and Hall Ranch on the Boulder County Parks & Open Space website before bringing your dog.
You'll encounter diverse scenery, including amazing views of the Front Range, picturesque vistas, and shaded forested areas. The Nelson Loop within Hall Ranch offers beautiful views of the Arapahoe range and Longs Peak. Along the Picture Rock Trail, look out for historical elements like an old quarry with a dead car and numerous old ranching walls made from local sandstone.
Yes, this route effectively combines three distinct trail systems: Heil Valley Ranch, Hall Ranch, and the Picture Rock Trail. It also passes through sections of the Wild Turkey, Bitterbrush Trail, Wapiti Trail, Nelson Loop Trail, Antelope Trail, Ponderosa Loop Trail, Night Hawk Trail, Lichen Loop Trail, and Grindstone Quarry Trail, serving as a critical link for creating longer rides.
The Picture Rock Trail is unique because it was intentionally crafted by and for mountain bikers, making clever use of elevation and contour. It features pump-able rock features, a testament to its professional construction with sustainability in mind, and serves as a vital connection between Heil Ranch, Lyons, and Hall Ranch.
While the full loop is difficult, some sections within Heil Valley Ranch, such as the Overland Loop and Schoolhouse Loop, are considered easier and more family-friendly. These offer a good introduction to the area's riding without the full technical challenge of the entire loop.