2.9
(14)
54
riders
05:37
36.1km
700m
Mountain biking
Get ready for a difficult mountain biking adventure on The Hartman Rocks Big loop, spanning 22.4 miles (36.1 km) with a significant 2289 feet (698 metres) of elevation gain. This route takes you through diverse high-desert terrain, featuring extensive singletrack and slickrock sections. You will navigate rolling hills dotted with sagebrush and encounter striking granite rock formations, including technical features like rock rollers and drops. Expect to spend around 5 hours and 36 minutes on this challenging ride, with expansive vistas from viewpoints like the Top of the World Trail. You can see the Gunnison Basin to the north and the majestic San Juan Mountains, West Elks, and Sawatch Range to the south.
Planning your visit is straightforward, as the Hartman Rocks Recreation Area is easily accessible from Gunnison. You will find ample parking available at various trailheads. Because of its high desert ecosystem, the trails here tend to dry out earlier than those at higher elevations, making it an excellent choice for spring and extended fall riding. Remember that these are multi-use trails, so you will be sharing them with dirt bikers, hikers, and trail runners.
This comprehensive loop offers a truly rewarding experience for skilled riders looking to explore the unique high desert ecosystem of the Hartman Rocks Recreation Area. The striking granite rock formations and diverse trail surfaces, from singletrack to slickrock, make it a standout destination. It is a place where you can push your limits while enjoying the rugged beauty of the landscape and the far-reaching views from its highest points.
Last updated: April 23, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Hartman Rocks
BLM - Gunnison Field Office
Waypoints
Start point
Parking
Get Directions
464 m
Highlight (Segment) • Trail
Tip by
3.53 km
Highlight (Segment) • Trail
Tip by
31.8 km
Highlight (Segment) • MTB Park
Tip by
36.1 km
End point
Parking
Way Types & Surfaces
Way Types
27.4 km
7.80 km
562 m
283 m
Surfaces
23.0 km
6.88 km
3.94 km
1.71 km
562 m
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Elevation
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Weather
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Today
Monday 18 May
13°C
3°C
75 %
Additional weather tips
Max wind speed: 32.0 km/h
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This route was planned by komoot.
The Hartman Rocks Big loop is an excellent choice for spring and extended fall riding. Its high desert ecosystem means the trails dry out earlier than higher-elevation routes, making it accessible when other trails might still be wet or snowy.
The terrain is highly varied, featuring a significant amount of singletrack, slickrock, and natural surface roads. You'll encounter rolling hills covered in sagebrush, striking granite rock formations, and technical features like rock rollers, drops, spines, and slabs. Some sections are fast and swooping, while others involve tricky uphill moves and loose rock.
This loop is generally considered an intermediate to hard mountain bike ride, requiring good fitness and advanced riding skills. It includes sections with steep climbs and challenging technical moves, including black diamond rated parts. Some climbs, particularly on slickrock, can be formidable and may even require pushing your bike.
Yes, the Hartman Rocks Recreation Area is generally dog-friendly. As a multi-use area managed by the BLM, dogs are typically allowed but should be kept under control, preferably on a leash, to ensure safety for all users and wildlife.
The high desert setting offers beautiful vistas. You'll enjoy views of the Gunnison Basin to the north and the majestic San Juan Mountains, West Elks, and Sawatch Range to the south. The unique granite rock formations and scenic drainages also contribute significantly to the visual appeal.
The Hartman Rocks Recreation Area has multiple access points and parking areas. Given its proximity to Gunnison, you can find parking at designated trailheads within the area. Specific parking details for the 'Big Loop' can vary depending on your chosen starting point within the extensive trail system.
No, there are generally no permits or entrance fees required to access the Hartman Rocks Recreation Area for day use. It is managed by the Bureau of Land Management (BLM) and is open to the public.
The Big Loop incorporates many trails within the Hartman Rocks system. Some notable sections you'll encounter include Jack‘s Trail, Top of the World Trail, and Rattlesnake Trail. The route is designed to give you a comprehensive tour of the area's diverse features.
Yes, as a comprehensive tour of the Hartman Rocks system, this loop intersects and utilizes many trails. You'll ride sections of trails like Josies, Gateway, Joshos, Outback, Dave Moe's, and Top of the World, among many others within the extensive network.
The 'Big Loop' combines many trails, including black diamond sections with steep slickrock climbs and technical features. A good strategy is to be prepared for varied conditions and technical riding. Some riders find that tackling certain climbs early in the ride can conserve energy. Always assess your skill level, as some sections may require dismounting and pushing your bike.
Given the length and difficulty, bring plenty of water, snacks, and essential bike repair tools. Sun protection (sunscreen, hat, sunglasses) is crucial due to the exposed high desert environment. A helmet, gloves, and appropriate riding gear are also highly recommended for safety.