Hours of use for Greenway Trailheads and Greenway Lands is 1 hour before sunrise to 1 hour after sunset, while the Greenway Trail itself is open 24 hours, 7 days a week given there is continuous movement on the trail. Learn more about rules and regulations on public lands. 

Notice

In September 2013, Longmont experienced the most devastating flash flood event in its history. The flooding caused extensive damage throughout Longmont. The St. Vrain Greenway was significantly impacted. Repairs have been made to many sections. The remaining damaged portions are being reconstructed through work on the Resilient St. Vrain project.

Overview

This greenway is considered the “crown jewel” of Longmont’s trail system as it links a variety of parks, schools, other trails and commercial areas along its length.

Currently the trail runs approximately 8 miles from Golden Ponds Nature Area (at Third Avenue, west of Hover Street) to Sandstone Ranch Nature Area. The St. Vrain Greenway is part of the Front Range Trail plan–a regional trail system that will one day run from Wyoming to New Mexico.

Many miles of concrete bike paths and gravel walking paths, as well as nature trails, welcome visitors of all kinds to the Greenway. Several city nature areas abut the Greenway, including Golden Ponds, Roger’s Grove, Izaak Walton, Sandstone Ranch, and Dickens Farm (just east of Main Street). The trail also connects to Left Hand Greenway.

Existing trailheads can be found at Golden Ponds, Roger’s Grove, Boulder County Fairgrounds, Izaak Walton Pond, South Pratt Parkway, the western end of the Harvest Junction North commercial development, 119th Street, County Road 1, and Sandstone Ranch.

Dog Restrictions on St. Vrain Greenway East of County Line Road

The St. Vrain Greenway east of County Line Road has dog restrictions adopted by City Ordinance. Dogs are not allowed (leashed or unleashed) on the portion of the trail east of County Line Trailhead to Sandstone Ranch (approximately 1 mile of trail). Dogs pose a threat to wildlife in this area. City Council directed the restriction to protect this unique landscape, the wildlife in this area, and its important wildlife habitats.

Future St. Vrain Greenway Development

The original master plan for the St. Vrain Greenway was completed in 1992 calling for 7 miles of trail corridor from North 75th Street to County Line Road (County Road 1). An eastern corridor master plan update was adopted July 2001 for the portion of the St. Vrain Greenway corridor west of Main Street, and extended the original corridor from Weld County Road 1 to Weld County Road 7. Plans call for connections to Union Reservoir and Spring Gulch #2.

Boulder County plans to eventually continue the St. Vrain Greenway west to Lyons, and Colorado State Parks hopes to extend it through St. Vrain State Park to link with the Town of Frederick’s trail system.