4.8
(3579)
6,153
riders
Sourdough and South Saint Vrain Loop
03:01
29.0km
700m
Mountain biking
Get ready for a moderate mountain biking adventure on the Sourdough and South Saint Vrain Loop, an 18.0 miles (29.0 km) route that promises a rewarding 3 hours of riding. You will gain 2301 feet (701 metres) of elevation as you navigate continuously rocky and technical singletrack. The trail winds…
Last updated: April 23, 2026
Tips
Includes a very steep uphill segment
You may need to push your bike.
After 1.09 km for 555 m
Waypoints
Start point
Parking
Get Directions
454 m
North Sourdough Trail
Highlight (Segment) • Trail
Tip by
29.0 km
End point
Parking
Way Types & Surfaces
Way Types
21.7 km
4.08 km
3.15 km
< 100 m
Surfaces
22.3 km
6.58 km
< 100 m
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Elevation
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Weather
Powered by Foreca
Today
Wednesday 27 May
12°C
5°C
81 %
Additional weather tips
Max wind speed: 11.0 km/h
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This route was planned by komoot.
Frequently Asked Questions
Where can I park to access the Sourdough and South Saint Vrain Loop?
While specific parking details aren't provided, the trail is located near Nederland, Colorado. Riders typically access this area via trailheads that serve the Roosevelt National Forest. It's advisable to check local land management websites for designated parking areas and any specific regulations before your visit.
Is the Sourdough and South Saint Vrain Loop suitable for beginner mountain bikers?
No, this loop is considered a difficult to advanced mountain biking trail. It's often rated as a blue/black or black diamond due to its continuously rocky and technical singletrack, sustained climbing at altitude, and challenging descents. It's not a smooth, flowy trail and may require hike-a-bike sections for less experienced riders.
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter
What kind of terrain can I expect on this mountain bike ride?
Expect a challenging and technical experience. The terrain is characterized by continuously rocky singletrack, numerous roots, and embedded rocks. You'll encounter