Longmont, Boulder Reservoir and Gunbarrel loop via the LOBO Trail
Longmont, Boulder Reservoir and Gunbarrel loop via the LOBO Trail
4.5
(9317)
12,374
riders
03:08
47.4km
210m
Cycling
Cycle the moderate 29.4-mile LOBO Trail loop, connecting Longmont, Boulder Reservoir, and Gunbarrel with scenic foothills views.
Last updated: February 26, 2026
Tips
Includes a segment in which cycling is not permitted
After 45.6 km for 104 m
Waypoints
Start point
Parking
Get Directions
19.6 km
Highlight (Segment) • Trail
Tip by
23.9 km
Highlight • Lake
Tip by
29.0 km
Highlight • Lake
Tip by
30.8 km
Highlight • Structure
Tip by
33.9 km
Highlight • Viewpoint
Tip by
47.4 km
End point
Parking
Way Types & Surfaces
Way Types
17.4 km
13.0 km
7.16 km
5.77 km
3.93 km
< 100 m
< 100 m
Surfaces
17.9 km
17.3 km
7.60 km
4.31 km
303 m
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Elevation
Highest point (1,600 m)
Lowest point (1,510 m)
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Weather
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Today
Thursday 7 May
23°C
-1°C
13 %
Additional weather tips
Max wind speed: 12.0 km/h
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This route was planned by komoot.
You can find parking at various points along the route, including trailheads in Longmont, near the Boulder Reservoir, and in Gunbarrel. Specific parking areas are available at Boulder County Open Space trailheads. Always check local signage for any parking restrictions.
Generally, there are no permits or entrance fees required to access the LOBO Trail itself. However, some specific areas within Boulder County Open Space, such as the Boulder Reservoir, may have fees for certain activities or vehicle access. It's always a good idea to check the Boulder County Parks & Open Space website for the latest regulations.
The loop offers a diverse cycling experience with a mix of surfaces. You'll encounter primarily crushed stone and paved sections, with some segments featuring gravel. While mostly smooth, some parts may be unpaved. There are also a few short on-street connections required to complete the loop. A hybrid or gravel bike is often recommended for optimal comfort across these varied surfaces.
Yes, this loop is generally considered suitable for beginners and recreational riders. Many sections are flat with minimal elevation gain, making it an easy cruise. While the overall difficulty is rated as moderate, this is largely due to its length. The LOBO Trail itself has an easy physical rating, making it accessible for those new to touring cycling.
This touring bicycle loop is approximately 47.35 kilometers (29.4 miles) long. On average, it takes about 3 hours and 8 minutes to complete, depending on your pace and how often you stop to enjoy the scenery.
The route offers a variety of picturesque scenery. You'll enjoy Great views of the Foothills and the iconic Flatirons, especially near the 51st Street (Gravel to Eagle Trailhead) section. The loop also passes by the beautiful Boulder Reservoir and Twin Lakes, traverses farmland with grazing cows, and features open fields with wildflowers. You might even spot the Mural of the Full Moon Wolves.
Yes, the route utilizes and connects with several other trails. The primary path is the Longmont-to-Boulder (LOBO) Regional Trail, which makes up a significant portion of the loop. You'll also ride on sections of the Longmont Loop - South, Left Hand Creek Trail, Niwot Loop Trail, and Boulder Reservoir Trail, among others.
Yes, the LOBO Trail system is generally dog-friendly, but dogs must be kept on a leash at all times. There is a short exception near Twin Lakes Open Space where e-bikes are generally allowed, but always be mindful of specific regulations in different sections, especially within Boulder County Open Space areas.
The best time to cycle this loop is typically during the spring, summer, and fall months when the weather is mild and the scenery is vibrant. While possible in winter, some shadier sections of the LOBO Trail can retain snow and ice, making conditions more challenging. Always check local weather conditions before heading out.
Yes, as the loop connects Longmont, Niwot, Gunbarrel, and Boulder, you'll find various amenities in these towns. This includes cafes, restaurants, and public restrooms. The Boulder Reservoir area also offers facilities. Planning your stops in advance can enhance your touring experience.
Given the trail's varied landscape through open spaces, farmlands, and lakeside areas, you might spot various local wildlife. This could include birds, small mammals, and possibly grazing livestock in the agricultural sections. Keep an eye out, especially during quieter times of the day.