cr 115 begins at the tioga county line in the town of caroline, where it connects to tioga county's cr 33. the county highway passes a mountain to the west and the owego river's west branch to the east as it heads northward. it crosses boyer creek as 76 road and enters the hamlet of speedsville, a small community located on top of a mountain. here, cr 115 turns to the northwest to run along the base of a valley surrounding boyer creek. the creek reaches its source at an intersection with yaple road; however, cr 115 continues northwestward to serve the hamlet of caroline center.