Old Jul 15, 18, 7:26 pm
Join Date: May 2009
Location: PHL
Posts: 2,830
Trains are possible with frequent options available from Amtrak, New Jersey Transit, and less so from Septa. But as mentioned it takes a little away from your flexibility and it doesn't sound like it is a trip where you have a random hour to kill waiting for a train.

I'd probably start in either PHL or EWR. There will be backtracking anyway you put it. It is 45-60 min from both EWR and PHL to Princeton depending on traffic. There is not much around Princeton, but it is a very nice little town to walk around a bit. Outside of that it is suburbia and office parks. Note, that there are a number of full service hotels in the Princeton area because of the large corporate presence.

Regarding highway speeds...the highways are generally very congested, but that does not stop people from going 80+, especially on the NJ Turnpike that is largely 10-12 lanes.
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