Complex sentence: It runs parallel to and south of the Southern Tier Expressway (NY 17 and Interstate 86) between the village of Belmont and the town of Alfred and it passes through more rugged and scenic countryside than the superhighway.
Split into simpler sentences: It runs parallel to and south of NY 17 and Interstate 86 between the towns of Belmont and Alfred. Its route takes it through more rugged and scenic countryside than the superhighway.