Ironman 70.3 Waco Race Day Podcast: Episode 015. In this episode of Addicted2Triathlon, Kate tells you what it is like to actually do a 70.3 triathlon. The 1.2 mile swim down the Brazos River, the 56 mile bike ride in the Texas countryside, and a 13.1 mile run along the scenic banks of the Brazos River to finish on the Waco Suspension Bridge. The Ironman 70.3 Waco is not an easy venue. Be amazed as you listen to her adventure!