IRONMAN Triathlon 70.3 Ohio 2021 Located in the heart of the state, IRONMAN 70.3 Ohio is where you want to race next summer. Known to be hometown living with a modern spirit, Delaware has the perfect mix of lighthearted fun in a charming, small-town setting. From the volunteers to the host city itself, this town welcomes 70.3 athletes year after year with open arms.