4.0
(41)
152
riders
28
rides
Gravel biking around Saint-Vrain offers diverse landscapes, characterized by wetland habitats, rivers, and several distinct ponds. The region features broad, shallow, grassy river valleys with alluvial soils and gravels, set against the backdrop of the Colorado Front Range. This mix provides varied terrain for cyclists, from flat riparian areas to more varied routes further into Boulder County. The area also includes unique geological formations like the Hygiene Hogback.
Last updated: May 24, 2026
4.7
(25)
80
riders
40.0km
02:06
150m
150m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.5
(2)
4
riders
31.4km
02:16
210m
210m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.

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4.0
(2)
9
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
6
riders
37.2km
02:43
320m
320m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.3
(4)
3
riders
35.1km
02:19
160m
160m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
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Popular around Saint-Vrain
Beautiful expanse of greenery, very accessible by bike
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Magnificent park to wander from end to end. A must-do.
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An early morning outing to enjoy all the wildlife around these lakes.
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As you walk through the serene Parc de Lormoy, you will discover a fascinating collection of wooden sculptures scattered throughout the park. These unique works of art, made from fallen trees, are a testament to the creativity and skill of local artisans. As you walk along the winding paths, you will be captivated by the intricate details and imaginative forms of each sculpture. Take time to appreciate the beauty of nature and the art that transforms ordinary wood into extraordinary masterpieces.
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Excellent descent in the woods. There are many nice singles in the area - enough to make a great outing!
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This site consists of 86 hectares of ponds, wet woodlands and peat meadows. Take the time to explore around the ponds and appreciate the rich biodiversity of the marsh.
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The Carouge basin is the point of convergence of the Orge, Blutin, Salmouille and Boële. The basin was dug in the 1970s to extract materials for road construction, and also to manage the floods of the Orge. Here you can see many species of birds, such as seagulls, cormorants and ringed plovers depending on the season. The path along the basin is safe and flat.
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The bridge over the Orge, near the Bassin du Breuil in Épinay-sur-Orge, is a charming passage that offers a peaceful view of the river and its green banks. Surrounded by trees and paths, this bridge is an ideal place for a contemplative break. The murmur of the water and the serenity of the landscape invite you to relax.
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You'll find over two dozen dedicated no-traffic gravel bike trails around Saint-Vrain, offering a variety of experiences from easy rides to more challenging routes. Our guide features 25 such routes, with 5 easy, 11 moderate, and 9 difficult options.
Saint-Vrain, nestled in the St. Vrain Valley and Boulder County, is renowned for its diverse landscapes perfect for gravel biking. You'll encounter extensive trail networks, scenic routes through farmlands, and stunning views of the Colorado Front Range, including Longs Peak. The region's focus on preserving natural beauty means many routes offer a peaceful, car-free experience.
Yes, the Saint-Vrain area offers several family-friendly options, particularly within and around St. Vrain State Park. These trails are generally flat and easy, perfect for a leisurely ride with children. While specific routes are not detailed here, look for trails with minimal elevation gain and smooth surfaces for a pleasant family outing.
Many trails in the broader Boulder County area, including some gravel paths, are dog-friendly, provided your dog is on a leash. Specifically, St. Vrain State Park allows dogs on trails and in campgrounds. Always check local regulations for specific trailheads or open space areas before heading out with your furry companion.
The St. Vrain Valley is a vibrant wildlife corridor. Cyclists often spot blue herons, bald and golden eagles, coyotes, foxes, and various deer species. St. Vrain State Park is particularly known for its large rookery of Great Blue Herons and hosts bald eagles during winter, making for excellent wildlife viewing opportunities along the trails.
Yes, many of the no-traffic gravel routes in Saint-Vrain are designed as loops, allowing you to start and end at the same point. For example, the Carouge Basin – Perray Natural Park loop from Arpajon is an easy 35 km option. Another great choice is the Carouge Basin – Carouge Basin loop from La Norville - Saint-Germain-lès-Arpajon, a shorter 12.7 km ride.
Saint-Vrain offers year-round recreation, but the best time for gravel biking is typically spring through fall when the weather is mild and trails are dry. Winter can also be beautiful, but be prepared for colder temperatures and potential snow or ice, especially on higher elevation routes. Always check local weather and trail conditions before you go.
Absolutely. While this guide focuses on no-traffic routes, the broader Saint-Vrain and Boulder County area is known for challenging gravel climbs. Within our selection, you'll find 9 difficult routes. For instance, the Buisson Tower – Fontenay-le-Vicomte Marsh loop from Mennecy offers a significant elevation gain over 31 km, providing a good test for experienced riders.
The no-traffic gravel trails in Saint-Vrain are highly rated by the komoot community, with an average score of 3.99 stars. Reviewers often praise the serene natural beauty, the quiet and safe riding environment, and the diverse terrain that caters to various skill levels. The stunning mountain views and wildlife spotting opportunities are frequently highlighted as major draws.
Yes, many routes offer scenic beauty and points of interest. The St. Vrain Valley itself is characterized by wetland habitats, rivers, and ponds. You'll often ride with views of the Colorado Front Range. St. Vrain State Park, accessible from many routes, offers opportunities for birding and enjoying the natural environment. The region also features unique geological formations like the Hygiene Hogback.
While direct public transport to every trailhead might be limited, many routes are easily accessible from urban centers like Longmont, which has public transportation options. From Longmont, you might need to cycle a short distance to reach the quieter gravel paths. For specific routes, it's best to check local bus schedules and route maps for connections to trailheads or nearby access points.
Parking is generally available at designated trailheads and within St. Vrain State Park. Many of the quieter gravel roads and paths are accessible from smaller community parks or open space parking lots. Always look for official parking areas to ensure your vehicle is safely and legally parked while you enjoy your ride.
Yes, the extensive network of trails in the St. Vrain Valley and Boulder County often includes a mix of gravel roads, paved sections, and dedicated bike paths. This allows for varied cycling experiences, transitioning smoothly between different surfaces while maintaining a low-traffic environment. This blend ensures a dynamic ride and often connects scenic natural areas.


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