Ironman Wisconsin 70.3 is happening June 9, 2019 in beautiful Madison! Athletes come from all over for the amazing crowd energy and legendary spectator support. Athletes start off with a 1.2 mile swim in the deep waters of Lake Monona, then transition into biking 56 miles in rural Dane Country. This course offers many challenging climbs and turns throughout. Finally, athletes finish strong with a 13.1 mile run along the shores of Lake Monona.