IRONMAN 70.3 Pacing Strategy: 113km Swim, Bike IF Power & Half-Marathon Pacing

IRONMAN 70.3 (113km Half-Ironman)—comprising a 1.9km swim, 90km bike, and 21.1km half-marathon—represents the apex of multi-discipline endurance racing.

Athletes who excel in isolated disciplines frequently disintegrate during the final half-marathon due to improper bike pacing. Triathlon is fundamentally the management of a single energetic reservoir. Governing bicycle Intensity Factor (IF) and Variability Index (VI) is critical to running success.