LoBo Trail 

Longmont-to-Boulder (LoBo) Regional Trail

A portion of the LoBo Trail is closed along 83rd Street just north of Lefthand Valley Grange to Neva Road. This phase of the project is expected to be completed in early June. Trail Map

The Longmont-to-Boulder (LoBo) Regional Trail is a 12-mile trail system that runs through Gunbarrel, Niwot, and open space properties connecting the City of Boulder with the City of Longmont.

 Your Visit

LoBo Trail


  • Temporary facility at Niwot Trailhead


  • Cottonwood Trailhead (City of Boulder)
  • Lefthand Creek Park (City of Longmont)
  • Lefthand Valley Grange
  • Monarch Trailhead
  • Niwot Trailhead
  • Twin Lakes Trailhead

Keep in Mind

  • Unauthorized motor vehicles are prohibited including electric bikes, scooters and mopeds.
  • Stay on the designated trail as private property borders the trail in several places.
  • There are several areas where you need to use on-street connections.

 Map & Directions


See the list of completed trails sections, current and future projects on the project page.


Parks & Open Space

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Parks are open sunrise to sunset
Check Trail Conditions