IRONMAN 70.3 North Carolina

IRONMAN 70.3 North Carolina takes place in Wilmington, North Carolina, on October 17, 2026. It is a half-distance triathlon: a 1.2-mile swim (1.9 km), a 56-mile bike (90.1 km) and a half marathon run of 13.1 miles (21.1 km), for 70.3 miles in total. Wilmington sits on the coast at the mouth of the Cape Fear River.

The middle distance is where triathlon starts to reward pacing discipline over raw fitness. Nearly everyone who struggles in the run leg overcooked the bike, so treat the 56 miles as a controlled effort rather than a time trial. Train the swim for consistency instead of speed, and put at least a few brick sessions in the final two months so running on cycling legs feels familiar. A 16- to 20-week build with two sessions per discipline each week is the standard approach.