NBC will broadcast the Aflac Iron Girl's Atlanta triathlon Sunday.
It will run from 2 p.m. to 3 p.m. EST and feature stories of female athletes who have overcome serious challenges.
Aflac Iron Girl is a nationwide series of fitness events for women.
The Atlanta triathlon took place June 28 at Lake Lanier. Nearly 1,000 women finished the 1/3-mile swim, 18-mile bicycle ride and 3-mile run.