I-86? <—didn’t exist when I was up there last. Rt 17 east. When you get to Binghampton, you could go south on 81 to 80 east, cross the GW and head south. :-) Or at Binghampton, you could follow rt 17 to the turnpike and drop in from there.
That should be Binghamton....there’s no “p” in Binghamton....pron: Bing-um-ton!