Runners follow an out-and-back course for the Catharine Valley Half Marathon, which starts and finishes at Watkins Glen High School. From there, runners head out on some paved roads in the early going but spend most of their time during the race on the Catharine Valley Trail, which stretches between the towns of Watkins Glen and Montour Falls and south toward Millport, and features mostly cindered surface trails.
(MORE: Catharine Valley Half Marathon event details)