Last updated: August 14, 2025
Thing to Do
Bike the Alamo Canyon to Valle Seco Lasso
NPS/Corey Lycopolus
The Alamo Canyon to Valle Seco Lasso is a 13.5-mile bike route through the western portion of Valles Caldera National Preserve. This ride features 1,800 feet of elevation gain and a speedy final descent through the park's densest concentration of geothermal features.
Starting from the Sulphur Creek Trailhead, ride 1.7 miles and turn right at Alamo Canyon. Approximately 3 miles up Alamo Canyon, turn left at VC06/Valle Seco Trail. You'll take this trail for about 3.7 miles until it loops back around to the Sulphur Creek Trail. From here, take a left and enjoy a long, speedy descent as you complete the full lasso.
This is true backcountry mountain biking. The route is remote, with no cell reception and several trees that require a dismount. The rider is rewarded with tremendous natural beauty, neat geological features, and great wildlife viewing opportunities. The entire route is 13.5 miles with approximately 1800 feet of elevation gain. A full-suspension mountain bike is recommended. You should be prepared to get out on your own in the case of a mechanical.
Starting from the Sulphur Creek Trailhead, ride 1.7 miles and turn right at Alamo Canyon. Approximately 3 miles up Alamo Canyon, turn left at VC06/Valle Seco Trail. You'll take this trail for about 3.7 miles until it loops back around to the Sulphur Creek Trail. From here, take a left and enjoy a long, speedy descent as you complete the full lasso.
This is true backcountry mountain biking. The route is remote, with no cell reception and several trees that require a dismount. The rider is rewarded with tremendous natural beauty, neat geological features, and great wildlife viewing opportunities. The entire route is 13.5 miles with approximately 1800 feet of elevation gain. A full-suspension mountain bike is recommended. You should be prepared to get out on your own in the case of a mechanical.
Details
Duration
4-6 Hours
Activity
Mountain Biking
Pets Allowed
No
Activity Fee
Yes
Park entrance fees apply.
Location
Alamo Canyon to Valle Seco Lasso
This bike route begins at the Sulphur Creek Trailhead on FR 105. This is a dirt road with a large, brown gate that says Valles Caldera National Preserve on it. There's a narrow pedestrian/bike access on the left side of the gate next to a trail sign.
Reservations
No
Season
Spring, Summer, Fall
Time of Day
Day, Dawn, Dusk
Accessibility Information
The Alamo Canyon to Valle Seco Lasso is a route containing gravel roads, muddy, rutted trails, and steep grades.