New Drumhead LIRR #514 at Penn Station 4/18/2013 The LIRR is announcing plans for the first non-stop express service direct from Penn Station to Westhampton Beach this summer. The ride will take 94 minutes.
That sounds like a good service. IIRC, aren't the Hamptons about 90 miles from The City. If so, 60 MPH average would be great.