It has been suggested that Farmington Canal Heritage Trail be merged into this article. (Discuss) Proposed since July 2024.

The New Haven and Northampton Canal Greenway is a proposed and partially completed, paved rail trail and non-motorized commuter route along the former right of way of the New Haven and Northampton Railroad. It currently has 63 miles (101 km) open, and when complete it will be 81.2 miles (130.7 km), running from New Haven, Connecticut to Northampton, Massachusetts.^[1] It consists of the following trails, from north to south:

• The New Haven Northampton Canal Line trail in Northampton, Massachusetts.^[2] All 3.5 miles (5.6 km) complete.
• The Manhan Rail Trail in Easthampton, Massachusetts.^[3] All 3.7 miles (6.0 km) complete.
• The Southampton Greenway in Southampton, Massachusetts.^[4] 0 miles (0 km) complete, 3.9 miles (6.3 km) proposed.
• The Columbia Greenway Rail Trail in Westfield, Massachusetts.^[5] 2.6 miles (4.2 km) complete, 7.4 miles (11.9 km) proposed.
• The Southwick Rail Trail in Southwick, Massachusetts.^[6] All 6.2 miles (10.0 km) complete.
• The Farmington Canal Heritage Trail from New Haven, Connecticut to Suffield, Connecticut.^[7] 45.8 miles (73.7 km) complete, 56.5 miles (90.9 km) proposed. The section from New Haven to East Granby, Connecticut, 45.3 miles (72.9 km) complete, 54.2 miles (87.2 km) proposed, is shared with the East Coast Greenway.

• The New Haven & Northampton Canal Greenway Alliance