By Rail
Trenton is the southernmost stop on the NJ Transit Northeast Corridor Line, which regularly runs trains from NYC to to Trenton. Trenton is also northernmost end of the River Line light rail system, which serves communities along the Delaware River from Trenton to Camden, and the R7 SEPTA line, connecting Trenton and Philadelphia.
By bus
By bus
New Jersey transit runs a number of bus lines through the city to the surrounding communities. See New Jersey Transit's website (http://www.njtransit.com/...) for more details.