Unlock your true potential with the Ironman 70.3 Plan By the Book at MarinewifeMultisport. In this plan, I will take you through a complete program for a 1.2 mile swim, a 56 mile bike ride, and a 13 mile run. Created mostly in accordance with Ironman University’s protocol, this plan covers essential swim, bike, run, and strength training tailored for the seasoned athlete who has completed several Sprint and Olympic-distance races. Experience advanced coaching techniques that elevate your performance and guide you to success in your half-iron distance race.