4.5
(60)
2,053
riders
72
rides
Gravel biking around Boulder offers diverse terrain at the foothills of the Rocky Mountains, characterized by a mix of challenging mountain climbs, scenic foothills, and tranquil farmlands. The region features iconic red rock formations like the Flatirons, alongside extensive networks of gravel roads and bike paths. Canyons such as Lefthand and Fourmile provide varied landscapes, from forested sections to open vistas. This blend of environments makes Boulder a premier destination for gravel cyclists seeking varied experiences.
Last updated: May 1, 2026
132
riders
67.2km
05:11
1,900m
1,900m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(3)
125
riders
27.4km
01:53
620m
620m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
4.5
(4)
68
riders
49.5km
02:48
350m
350m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
93
riders
58.5km
04:03
1,230m
1,230m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(4)
100
riders
60.8km
03:43
380m
380m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Since the earlier post from October 2023, several new gravel trails have been headed up to and down from the mesa. Flowy routes that are fun.
0
0
Could love more on the trails with soft and dry graves, some portion has hard rocks.
1
0
Though the mud after days of sunshine after winter storm became smooth and look nice. However, there are still cars going through and the washboards could be so bumpy. Especially, the wind speed was averaged around 15mph on that day. It might be hard to write this part.
1
0
The Assay Office Museum contains many tools and implements used in the assaying process, as well as furniture and artwork owned by the Bailey family. The museum is open the third Saturday of the month May through October. https://bouldercounty.gov/open-space/education/museums/assay-office/
0
0
The trail is paved and crosses the creek here between Eben Park and the Boulder Creek trail. You can also use this as a great trailhead from which to access the mountains and canyons just west of here.
0
0
The Lagerman Agricultural Preserve and Reservoir is a small nature preserve that birders, boaters, picnickers, bikers, runners, and dog-walkers can all enjoy. You get great views of the foothills over farms and fields as you ride down well-graded crushed gravel and dirt roads.
0
0
There are over 80 gravel bike trails around Boulder, offering a wide range of experiences. You'll find 11 easy routes, 43 moderate, and 29 difficult options, ensuring there's something for every skill level.
Boulder's gravel biking terrain is incredibly diverse, blending gravel roads, paved sections, and dedicated bike paths. You'll encounter everything from challenging mountain climbs in the foothills of the Rocky Mountains to tranquil rides through farmlands and along scenic canyons like Lefthand and Fourmile. This variety allows for seamless transitions between different environments.
Yes, Boulder offers several beginner-friendly gravel routes. While specific easy routes are available, areas like Boulder Valley Ranch are known for their accessible paths. For a moderate introduction, consider the Boulder Reservoir – Coot Lake Dock loop from 28th St & Jay Rd, which is about 49.5 km long with manageable elevation.
For those seeking a challenge, Boulder delivers with significant climbs and rugged terrain. The Gold Hill General Store – Chapman Drive Trail loop from Boulder is a difficult 67.2 km route with over 1900 meters of elevation gain, taking you towards the mountainous Gold Hill. Another demanding option is the Boulder Creek Trail – Boulder Creek Path loop from Boulder, a 39 km ride with over 900 meters of climbing.
Absolutely! Boulder's gravel routes are rich with natural beauty. You'll often ride with dramatic views of the iconic Flatirons and the majestic Rocky Mountains. Many routes incorporate the Boulder Reservoir, offering serene water views. You can also find routes that pass by significant natural monuments like Royal Arch, or offer glimpses of prominent peaks such as Green Mountain Peak and Bear Peak.
Yes, many of Boulder's gravel bike trails are designed as loops, allowing you to start and finish at the same point. Examples include the popular Boulder Reservoir – Lefthand Trail loop from Gunbarrel and the Aquarius Open Space – Sterns Lake loop from Culinary School of the Rockies.
The gravel biking experience in Boulder is highly regarded by the komoot community, with an average rating of 4.3 stars from over 40 reviews. Riders frequently praise the diverse terrain, the stunning mountain backdrops, and the extensive network of trails that cater to all abilities.
Boulder offers several options for longer gravel rides. The Gold Hill General Store – Chapman Drive Trail loop from Boulder is a substantial 67.2 km route, and the Boulder Reservoir – Lefthand Trail loop from Gunbarrel covers 60.8 km, providing ample distance for an extended adventure.
Boulder offers great gravel biking opportunities throughout much of the year. Spring and fall provide pleasant temperatures and vibrant scenery. Summer is also popular, though you might want to start earlier to avoid the midday heat. While some higher elevation routes may be impacted by snow in winter, many lower elevation trails remain accessible, offering a unique cold-weather riding experience.
Yes, the Boulder Reservoir is a prominent feature in several gravel routes. You can enjoy rides that offer views of the reservoir and incorporate its surroundings, such as the Boulder Reservoir – Lefthand Trail loop from Gunbarrel and the Boulder Reservoir – Coot Lake Dock loop from 28th St & Jay Rd.
The gravel biking landscape in Boulder is defined by its dramatic setting at the foothills of the Rocky Mountains. Key features include the iconic Flatirons, the diverse canyons like Lefthand and Fourmile, and the tranquil farmlands that offer varied vistas. Riders can experience everything from dense forest sections to open, expansive views, often with glimpses of lakes and local wildlife.


Browse the best Gravel rides in other regions.