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Map of the Longmont Boulder Regional Trail


Longmont-to-Boulder Regional Trail, Colorado

denver singletrail focus

Longmont-to-Boulder Regional Trail, Colorado


10 miles


unpaved / paved


Longmont, Niwot, Gunbarrel, Boulder


views of the Indian Peaks, grasslands, rural residential communities, creeks, wildlife


Left Hand Greenway

Pleasant View Path

Niwot Trails




Regional Trails

The Longmont-to-Boulder Regional Trail (LoBo Trail) is a series of unpaved and paved pathways that stretch for over 10 miles between Longmont and Boulder in Boulder County, Colorado. The northeast of the LoBo Trail connects to the Left Hand Greenway at Hover Road in Longmont. From this location the LoBo Trail heads to the southwest going through natural areas alongside Left Hand Creek for a short stretch. The trail then follows alongside the Diagonal Highway passing farmland then drops to the south to travel through the residential neighborhoods of Niwot. Within Niwot, the LoBo Trail allows a connection to the network of recreational trails that wander through this rural community.

Farther to the south, the LoBo Trail follows alongside the Boulder and Left Hand Ditch past residential areas and stops at Lookout Road. At this point, trail users need to use the local streets to connect to the next section of the trail. The trail picks up again along Twin Lake Road and goes past Twin Lakes Open Space then follows the wooded area alongside a ditch that wanders through residential areas. At Spine Road, trail users can head south to travel along the unpaved Cottonwood Trail that reaches as far as Independence road.


The Longmont-to-Boulder Regional Trail is unpaved for much of its rout, with paved areas in some locations. The trail is graded, but is not suitable for all types of bicycles. The trail is open for bike riding and hiking.


The Longmont-to-Boulder Regional Trail goes past the following communities: Longmont, Niwot, Gunbarrel and Boulder.

Points of Interest

The Longmont-to-Boulder Regional Trail goes past the following points of interest:

Left Hand Grange Park
Monarch Park
Eaton Park
Twin Lakes Open Space
Gunbarrel Commons Park
Nearby Trails

Left Hand Greenway: the two trails meet at Hover Road to the south of the Diagonal Highway in Longmont. The Left Hand Greenway then connects to the St. Vrain Greenway that extends to Sandstone Ranch Community Park on the east side of Longmont.

Niwot Trails: the LoBo Trail intersects the recreational trail system in Niwot in a number of locations.

Boulder Trails: the south end of the LoBo Trail allows a connection to other recreational trails in the City of Boulder.

End Points

The Longmont-to-Boulder Regional Trail has three separate sections in which trail users need to use local streets to reach the next section.

The northeast end of the trail is located along S. Hover Road, 0.2 miles south of Pike Road in Longmont.

The southwest end of the trail is located at Independence Road to the east of Foothills Parkway in Boulder.


Following are links to official off-site resources to find out more details about the Longmont-to-Boulder Regional Trail, Colorado