Half Distance 70.3 Triathlon Muncie Indiana – Course Overview Swim: 1.2 Miles at Prairie Creek Reservoir Start with a 1.2-mile swim in the scenic Prairie Creek Reservoir with calm, clear waters and an average temperature of 73°F (23°C). This award-winning course is spacious and athlete-friendly. Bike: 56-Mile Out-and-Back Next, a 56-mile bike ride on fast, closed highways and rural roads through Delaware and Henry counties. Light winds often help on the return, making this a favorite for ...