Highlight (Segment) • Trail
Flagstaff Road
Cycling
4.4
(8)
Gravel riding
5.0
(1)
This Highlight goes through a protected area
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Tips
June 22, 2022
Cycling
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Nearby routes
Best routes near Flagstaff Road
5.0
(1)
126
riders
Embark on a challenging touring cycling adventure that spans 20.6 miles (33.2 km) and climbs 2349 feet (716 metres). This difficult route, estimated to take 2 hours and 36 minutes, offers a dynamic landscape. You will experience the open vistas of the Flatirons from the NCAR climb, transition to the shaded sections of Chapman Drive, and witness the impressive granite walls and Boulder Falls within Boulder Canyon.
This demanding loop requires good physical fitness and comfort riding in traffic, especially on Boulder Canyon Drive. To enhance your experience and avoid heavy vehicle flow, plan to start your ride early in the morning. A robust road bike with suitable gearing is recommended, or you might prefer a gravel bike due to the varied terrain, which includes both paved roads and the dirt surface of Chapman Drive.
This route is a true Boulder challenge, designed for experienced cyclists seeking a significant workout. It showcases the region's diverse natural beauty, including expansive views over Boulder Valley from Panorama Point on Flagstaff Road. You can also spot distant snow-capped peaks from the Lost Gulch Overlook, adding another layer to the scenic rewards of this ride.
80
riders
20.0km
01:42
470m
480m
The Flagstaff Mountain and Chapman Drive Loop is a challenging touring cycling route that offers a fantastic mix of terrain and views right outside Boulder. You'll climb through shaded forests on the car-free Chapman Drive, passing historic 1930s-era Civilian Conservation Corps stone bridges, before hitting the paved Flagstaff Road with its sweeping panoramic vistas of the Rockies and the Boulder Valley. This difficult 12.4-mile (20.0 km) loop involves a significant 1544 feet (471 metres) of elevation gain, typically taking around 1 hours and 42 minutes to complete.
To tackle this route, a gravel or mountain bike is your best bet, as the surfaces range from dirt and gravel fire road to paved mountain road and sections of the Boulder Creek Path. The loop is easily accessible from downtown Boulder, making it a popular choice for those seeking a substantial and rewarding climb. Be prepared for steep grades; Chapman Drive averages 7%, and Flagstaff Road has sections exceeding 15%, so good fitness is essential.
This loop is notable for its unique combination of a car-free dirt road ascent and a thrilling paved descent, all while being close to urban amenities. Keep an eye out for diverse wildlife like coyotes, foxes, and mule deer, and if you visit in late spring, you'll be treated to abundant wildflowers. It's a prime example of challenging bike rides Flagstaff Mountain offers, providing both a physical test and stunning natural beauty.
5.0
(1)
145
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Details
Informations
Distance 3.38 km
Uphill 100 m
Downhill 300 m
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Friday 12 June
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Max wind speed: 15.0 km/h
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