The Sandusky Half Distance Triathlon offers a memorable, well-designed course. The 1.2-mile swim starts from the Kelleys Island Ferry, sending athletes into the warm waters of Sandusky Bay (avg temp: 78°F) before finishing at the Paper District Marina. The 56-mile bike is a flat, fast single-loop route through Erie and Sandusky Counties with only 790 feet of elevation gain. The 13.1-mile run—two spectator-friendly loops through downtown—features minimal elevation but brings the challenge of ...