The Airport Connector, a 6-mile spur off the Montour Trail near mile-marker eight, has expanded the trail for recreational users and created an important connection for commuters. The idea for a link between the Montour Trail and Pittsburgh International Airport was first brought up in 2000. The trail now serves shoppers at the airport mall, employees, travelers and hotel guests with a place to recreate, and it offers employees a safe and convenient option for commuting. The Allegheny Trail Alliance, which promotes the Great Allegheny Passage (GAP) between Washington, D.C. and Pittsburgh, sees Pittsburgh as a crucial hub for a trails network that is expanding in all directions. The Montour Trail connects to the GAP, offering users an alternate route that bypasses a number of on-road sections through Pittsburgh.