Organizations and sites offering more info on the trail system.

Hither and Yon Adventure Rides Guided adventure bike rides in Western Mass and southern New England
Downtown Northampton Association Supporting the economic and cultural vitality of downtown Northampton
Friends of Northampton Trails Organization supporting Northampton bike and walk trails
Mass Bike MassBike advocates for policies that encourage and support community wellness, equity, and inclusion, enable sustainable growth, drive economic vitality, and reduce greenhouse gas emissions.
Mass Central Rail Trail The center of advocacy for finishing the Mass Central Rail Trail
Northampton Chamber of Commerce Facilitating business learning opportunities and connections
Norwottuck Rail Trail on Mass.gov More information on the trail from State of Massachusetts