The Triathlon Fueling Calculator builds a personalized, multi-part race-day nutrition and hydration plan from a short athlete profile. It walks you through your body weight, your race distance, and your realistic finish time, then layers in the conditions and physiology that actually change your numbers.

From your first sprint to your first IRONMAN — 100 questions answered, no jargon required. Whether you just signed up for your first sprint triathlon on a dare, you're a seasoned age-grouper chasing a Kona slot, or you're somewhere in between wondering why you own three bikes — this is the triathlon FAQ you've been looking for.