While NY 63 runs along the western edge of the college, US 20A and NY 39 follow the eastern edge of SUNY Geneseo northward to the village center. Here, the two routes meet Mary Jemison Drive, an east–west street that serves that the only connection between NY 39 west and NY 63 north. At the same intersection, US 20A and NY 39 turn east onto South Street; however, the concurrency terminates just one block later at Main Street. Here, NY 39 turns north, leaving US 20A to proceed east toward the Finger Lakes.