3.0
(12)
26
riders
04:14
39.7km
1,260m
Mountain biking
Embark on the Blackhawk Co. Trail eastern loop for a difficult mountain biking adventure spanning 24.7 miles (39.7 km). You will conquer a significant 4126 feet (1258 metres) of elevation gain, with the entire ride estimated to take around 4 hours and 13 minutes. This route immerses you in rugged high-alpine terrain, featuring long, sustained climbs, especially up Hermosa Park Road, leading to spectacular vistas of the San Juan Mountains and the Sneffels range as you traverse lush forests and vibrant aspen groves.
Planning your visit requires careful consideration, as this advanced mountain biking trail is not suitable for beginners. It features black diamond difficulty singletrack with very steep and rocky sections that demand experience. Always check local conditions before you go, particularly given the high elevation, to be aware of any potential snow or road closures. Parking is generally available at various trailheads in the Rico area, providing convenient access to this challenging loop.
This iconic San Juan ride is nestled within the vast San Juan National Forest, offering a true taste of high-country mountain biking. The trail is renowned for its unique blend of demanding physical effort and rewarding natural beauty, making it a standout experience in the region. You will find yourself riding through flower-filled valleys and past towering peaks, showcasing the diverse ecosystems of the Colorado Rockies.
Last updated: April 23, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
San Juan National Forest
Waypoints
Start point
Parking
Get Directions
12.6 km
Highlight (Segment) • Trail
Tip by
19.0 km
Highlight (Segment) • Mountain Pass
Tip by
38.4 km
Highlight • Trail
Tip by
39.7 km
End point
Parking
Way Types & Surfaces
Way Types
22.7 km
13.1 km
3.92 km
Surfaces
18.5 km
10.7 km
10.5 km
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Elevation
Highest point (3,640 m)
Lowest point (2,680 m)
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Weather
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Today
Saturday 9 May
16°C
-1°C
20 %
Additional weather tips
Max wind speed: 21.0 km/h
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This route was planned by komoot.
No, this trail is rated as difficult and features black diamond singletrack. It involves significant climbing, technical rocky sections, and steep descents, making it best suited for advanced and experienced mountain bikers.
The terrain is rugged and varied, typical of high-alpine environments. You'll encounter long, sustained climbs, narrow singletrack, challenging rocky and root sections, and rewarding steep descents. The route also traverses through lush forests, flower-filled valleys, and beautiful aspen groves, especially on sections like the Stagecoach Trail.
Given its high-alpine elevation (10,200 to 12,000 feet), the best time to ride this loop is typically from late June or early July through September, after the snow has melted and before new snow arrives. Always check current conditions before heading out.
The Blackhawk Co. Trail eastern loop is located within the San Juan National Forest. Generally, there are no specific permits or entrance fees required for day use on trails in national forests. However, always be aware of and adhere to all local regulations and Leave No Trace principles.
Yes, dogs are generally allowed on trails within the San Juan National Forest. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all trail users. Please remember to pack out all pet waste.
A common starting point for loops incorporating the Blackhawk Pass area is near Rico, Colorado. The route often utilizes trailheads like the Upper Hermosa Creek Trailhead. Parking availability can vary, so it's advisable to research specific trailhead parking options in advance, especially during peak season.
This loop offers spectacular high-alpine views of the San Juan Mountains. Key highlights include the Colorado Trail near Blackhawk Pass and Blackhawk Pass itself, which provide expansive vistas. You'll also ride through beautiful aspen groves and verdant hillsides.
Yes, this route is part of the famous Colorado Trail (specifically Segment 26) and incorporates sections of it. The loop also passes through other official trails such as Hermosa Park Road, West Cross Trail, and Hermosa Creek Trail, among others, allowing for various route combinations.
Given the trail's difficulty and high-alpine environment, you should bring plenty of water, high-energy snacks, appropriate layers for changing weather, sun protection, a first-aid kit, and essential bike repair tools. A GPS device or map is also highly recommended due to the remote nature of the area.
Many riders find that incorporating the Stagecoach Trail into the loop provides a fantastic experience. After the challenging climbs to Blackhawk Pass, the Stagecoach Trail offers a fast, mostly smooth, non-technical, and flowy downhill through gorgeous aspen groves, providing a rewarding descent.
The town of Rico, Colorado, is the closest community to the Blackhawk Pass area and offers basic amenities. You can find limited options for cafes, pubs, and accommodation there. For more extensive services, you might need to look towards larger towns in the San Juan Mountains.