What is driving distance between Stamford CT and Montreal?

354 miles

Although driving it is actually 370 miles (595 km) in total

335 miles (539 km) from Stamford to the Border taking this route:

1. Take I-95 SOUTH (or CT-15 MERRITT PARKWAY - SOUTH) towards NEW YORK, from Stamford, to I-287 WEST to the TAPPAN ZEE BRIDGE at EXIT 21 (off I-95)/EXIT 26W (off the HUTCHINSON RIVER PARKWAY, which is the continuation of the Merritt Parkway) in NEW YORK.
2. Take I-287 WEST, across the Tappan Zee Bridge, to I-87 THRUWAY (toll) - NORTH to ALBANY.
3. Continue on I-87 THRUWAY (toll) to the continuation of I-87 NORTH to MONTRÉAL at EXIT 24 in Albany.
4. Take I-87 (Adirondack Northway) NORTH to Canada, where you will cross the border from CHAMPLAIN (NY) into SAINT-BERNARD-DE-LACOLLE (QC).

From the border, it is 60 km (37 miles) to Montréal taking AUTOROUTE 15 - NORD