Travel East on the LIE (495) to the end.
Take Rte 58 Riverhead East (Toward Orient Point.)
At Mill Rd. (Boulder Creek Restaurant, Home Depot) make a left.
Take Mill Rd. north to end—Sound Ave.
Make right on Sound Ave.(48)
Sound Ave. will open to a 2 lane highway at Mattituck.
Continue east through Cutchogue, Peconic.
You will pass an Amoco gas station in Peconic.
Then Doroski Nursey on right, and Elbow Room East sign on left.
Make next left on Kenneys Road—sign for Elbow East.
(If the hwy goes to one lane, turn around and make 1st right)
Take Kenneys Road to stop sign, make left on Soundview Avenue.
Go around bend and make 1st left—sign on corner reads "To Great Pond Way"

Make next right (cul-de-sac.)
Last house on right.

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Here's the alternate route to bypass Riverhead (Rte 58):

LIE to Exit 71. Left on Edwards Ave. (north). Cross over Rte 25 continue
north to Sound Ave. Make right on Sound Ave at traffic light.
Follow main directions from Sound Ave. to Great Pond Way.