How many miles from Washington dc to union NJ?

Answer 1

225 miles taking this route:

1. Take I-95 NORTH, from Washington, to the N.J. TURNPIKE to NJ-NY, via I-295 at EXIT 5 in Delaware.
2. Take the N.J. TURNPIKE - NORTH to I-78 WEST at EXIT 14; make sure that you follow signs to ALL LOCAL EXITS (the LOCAL lanes).
3. Take I-78 WEST to UNION.