The Half Distance 70.3 Triathlon in Rockford, Illinois features a 1.2-mile swim in the Rock River, starting near the Rock Guardians sculptures and ending at Davis Park, with an average water temperature of 79°F (26°C). The 56-mile bike course offers gently rolling hills and scenic farmland, with participants passing through Rockton Township. The 13.1-mile run course takes athletes on a two-loop route along the Rock River's east and west banks, showcasing river views and neighborhoods, ...