From downtown Williamsport: US-15 north through Trout Run and Mansfield to the New York state line near Lawrenceville, continuing to the Bridge Street exit in Corning. ~75 miles. Trout Run, PA is a natural midpoint coffee stop.
The 3-hour round trip drives a different shopping pattern than closer PA cities. Williamsport visitors plan the trip as a small Finger Lakes overnight — shop, dinner on Market Street, hotel in Corning or Painted Post, breakfast + maybe CMOG, drive back. Cannabis must be consumed in NY before crossing back into PA.
Union Chill Cannabis Company at 34 W Pulteney St, Corning, NY 14830. NY OCM-CAURD #OCM-CAURD-25-000269. 90–100 min from Williamsport via US-15 north (continuous) (75 mi). Open Mon-Sat 10am-9pm, closed Sunday. Adults 21+ with valid photo ID. Out-of-state IDs accepted.