Longmont-to-Boulder Regional Trail 

Longmont-to-Boulder: IBM Connector Trail

The IBM Connector Trail is a planned multi-use regional trail that will connect the Gunbarrel community to the Boulder Reservoir and the larger City of Boulder parks and trails system. The trail connection is approximately 0.6 miles long with a primary crusher fines surface. Three underpasses (two highway and one railroad) and two bridges will be constructed as part of the trail. 

The preferred trail alignment was shaped by the IBM Trail Connector Community and Environmental Process (CEAP) Report that was completed by the City of Boulder in 2005. The CEAP was the result of public input and an environmental study. Boulder County is constructing the trail, but it will be owned and maintained by the City of Boulder. 

Construction - 

Trail construction will take place in several phases (see map below). Construction of the western segment is complete. The eastern segment's timing is dependent on the installation of a bridge along the BNSF railroad tracks that is expected to occur in 2017. Bridges across Dry Creek and the Boulder-Whiterock Ditch will be constructed in 2017. The trail is expected to be open to the public in late 2017. Please do not use the trail until it is completely finished as it is unsafe in its current condition. 


The project will be paid for using Federal Transportation Enhancement funds and by the City of Boulder and Boulder County. Federal funds are part of the Longmont-to-Boulder Regional Trail Connections project for which Boulder County was approved for funding in 2007. Boulder County is using dedicated funds for trail implementation passed by county voters in  2001 and extended in 2007. 

Trail Map


Matt Wempe, AICP
Regional Trails Planner
Boulder County Transportation
303-441-3900 or via email