Race Fuel Planner
Plan your carbohydrate, sodium and fluid for an Ironman, a 70.3 or a marathon. Pro-grade, made simple.
Before you start
This planner does the arithmetic a coach does by hand: how long your race will take, and roughly how much carbohydrate, fluid and sodium that asks of you. It plans standard sports practice for a healthy adult athlete.
What this is not
It is not medical or nutritional advice, and it cannot assess you. It does not know your health, and it never asks. Every number it produces is a starting point to test in training — not a prescription, and never a substitute for an accredited sports dietitian or your doctor.
Please confirm both:
- You are 18 or over.
- You are not pregnant, and you do not have a medical condition affecting how you handle fluid, sugar or salt — such as diabetes or kidney disease.
PaceOn does not store anything you enter here. Your plan lives in this browser window only.