With the Ironman 70.3 triathlon set for Sunday, drivers across the Chattanooga area should prepare for multiple road closures. The triathlon begins Sunday morning, with athletes participating in the swim portion beginning at 6:50 a.m. and transitioning to the bike race from 7:15 a.m. until 9 a.m. Runners will be on the Riverwalk, Amnicola Highway, the Veterans Bridge, Barton Avenue and Riverfront Parkway between 10:30 a.m. and 1 p.m., according to a press release. 📸: Matt Hamilton #ironman #roads #closures #chattanooga #70.3