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Union Reservoir Nature Area

Union Reservoir Park

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 as long as users maintain continuous movement on the trail. Click here for more information about rules & regulations.

This trailhead provides parking and amenities for the St. Vrain Greenway Trail and access to St. Vrain Creek. The St. Vrain Greenway Trail runs approximately 8 miles through Longmont from Sandstone Ranch Community Park and Nature Area on the east end to Golden Ponds Nature Area to the west.

The 119th Street Trailhead provides parking, trailer parking, restrooms, a shelter, picnic tables, and a take-out point for water recreation in the creek. Learn more about recreational uses of the St. Vrain Creek >