5.0
(1)
52
riders
7
rides
Mountain biking in Molas Pass Wsa Wilderness Study Area offers routes through high alpine terrain and rugged mountain passes. The region is characterized by significant elevation changes, dense conifer forests, and open meadows, providing diverse landscapes for mountain bikers. Trails often feature challenging climbs and rewarding descents, typical of a wilderness study area in the San Juan Mountains. This area is known for its remote feel and natural beauty, making it a destination for those seeking an immersive outdoor experience.
…Last updated: May 11, 2026
11
riders
29.8km
03:10
770m
770m
Ride the Colorado Trail: Twin Sisters, a moderate mountain biking route that winds through forested sections and open grasslands. You will cover 18.5 miles (29.8 km) with a significant elevation…
5.0
(1)
5
riders
64.5km
07:06
2,030m
2,030m
Embark on a challenging mountain biking adventure with the Engineer Mountain and Colorado Trail Loop, a difficult 40.1 miles (64.5 km) route that demands 6648 feet (2026 metres) of elevation…

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3
riders
52.1km
05:21
1,620m
1,620m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5
riders
18.1km
02:06
700m
700m
This 11.3-mile moderate mountain biking loop in San Juan National Forest offers challenging terrain, alpine views, and technical descents.
7
riders
37.6km
04:07
1,210m
1,210m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4
riders
28.9km
03:31
1,130m
1,130m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
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Popular around Molas Pass Wsa Wilderness Study Area
Lime Creek is the last decent and reliable water source if you hike the Colorado Trail southbound. There is a nicely shaded spot to take a break and filter the water. Campspots are not too easy to find here though.
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Segment 25 of the Colorado Trail leads into the stunning, colorful San Juan Mountains and takes you along small lakes and to bubbling creeks and rushing rivers. The ascents and descents are not as steep as further north (east) along the trail.
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Molas Pass sits a few yards below where the Colorado Trail passes the US 550 highway. Walk south 250 feet to the spur trail to the parking area and find Molas Overlook, a pit toilet, and parking at an elevation of 10,910 feet.
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This uphill section of the Engineer Mountain Trail is not very technical, but due to the elevation and the steepness of the trail you'll breath heavily. But the good thing is: You'll pedal slowly and have plenty of time to enjoy the beautiful scenery.
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Little Molas Lake is a high-altitude body of water at about 11,000 feet. It is located nearby parking lots and provides easy access to the Colorado Trail. It is the ideal place to enjoy a packed lunch before or after your ride.
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It is a popular trail with great panoramic views. It is located just east of Engineer Mountain, which is easily recognisable by its two cone-like peaks. The climbs are challenging and bring you to beautiful alpine meadows at the base of the peaks.
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Deer Creek is a mostly peaceful, flowy and fun trail. However, once you get to this last section (in the downhill direction), you will find that the difficulty drastically changes. The descent suddenly includes very tight corners on steep terrain. It is great fun if you are able to tackle the technical challenges, but is also something to keep in mind for less daring bikers, as this is an unavoidable section of the trail.
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This is a fun and long trail which extends north and south beyond this section between its intersections with Coal Creek and Engine Creek Trails. The northern part is more technical, while the southern one is considered to be the more fun one. The views are beautiful and the trail is easily accessed via multiple entry points.
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There are 7 mountain bike trails documented in Molas Pass Wsa Wilderness Study Area. These routes navigate through high alpine terrain and rugged mountain passes, offering diverse landscapes for mountain bikers.
The trails in Molas Pass Wsa Wilderness Study Area are primarily challenging. There are 2 moderate routes and 5 difficult routes, with no easy trails. Riders should expect significant elevation changes and technical sections.
Molas Pass Wsa Wilderness Study Area is known for its challenging terrain, and currently, there are no easy-rated mountain bike trails available. Most routes feature significant elevation gain and technical sections, making them more suitable for intermediate to advanced riders.
The komoot community highly rates the mountain biking experience in Molas Pass Wsa Wilderness Study Area, with an average score of 5.0 stars from 1 review. Over 50 mountain bikers have used komoot to explore the varied terrain, often praising the remote feel and natural beauty of the San Juan Mountains.
Yes, there are several loop options for mountain bikers. For a challenging full-day adventure, consider the Engineer Mountain and Colorado Trail Loop, which covers 40.1 miles. A shorter, moderate loop is the Deer Creek loop via Pass Creek, at 11.2 miles.
The best time to mountain bike in Molas Pass Wsa Wilderness Study Area is typically from late spring through early autumn. Due to the high alpine terrain, trails can be snow-covered well into June and early July, and early snowfalls can occur in late September or October. Always check local conditions before heading out.
Expect a mix of high alpine terrain, rugged mountain passes, dense conifer forests, and open meadows. Trails often feature challenging climbs and rewarding descents, with significant elevation changes characteristic of the San Juan Mountains. The remote nature of the area means trails can be technical and require good bike handling skills.
Yes, for those seeking longer rides, the Engineer Mountain and Colorado Trail Loop is a substantial 40.1-mile route. Another option is the Engineer Mountain Trail – Durango, which spans 32.3 miles through alpine forests.
Given the high alpine environment and variable weather, it's advisable to dress in layers. Include moisture-wicking base layers, an insulating mid-layer, and a waterproof/windproof outer shell. Always bring gloves, a helmet, and eye protection. Sunscreen and plenty of water are also essential.
Winter mountain biking in Molas Pass Wsa Wilderness Study Area is generally not recommended due to heavy snowfall, extreme cold, and potential avalanche hazards. The high elevation means trails are typically covered in snow for much of the winter season, making them impassable for standard mountain biking.
Many trails in Molas Pass Wsa Wilderness Study Area offer expansive views of the surrounding San Juan Mountains and alpine landscapes. For example, the Colorado Trail: Twin Sisters route provides significant vistas along a segment of the iconic Colorado Trail.
As a wilderness study area, Molas Pass Wsa is home to diverse wildlife. Riders might spot deer, elk, marmots, and various bird species. Bear and mountain lion sightings are rare but possible. Always maintain a respectful distance and carry bear spray if you feel it's necessary.
Yes, the Little Molas Lake – Lime Creek loop from Lime Creek Burn 1879 is a challenging 23.3-mile route that connects these two areas, offering a significant ride through the high country.


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