Free tools for your next big challenge

Calculators and planners to help you pace and fuel your next race or challenge. All free, with no sign-up needed to see your results.

Race-Day Fuel Calculator

Personalised carbohydrate, fluid and sodium targets for your race, built around your event, your body and the race-day forecast.

  • Cycling, running and triathlon (per leg)
  • Pulls in the forecast for your race location and start time
  • Safety flags for over-drinking, dehydration and very high sodium
  • Download as a PDF or have it emailed
Get your race-day targets →
g/hCarbohydrate per hour
ml/hFluid per hour
mg/hSodium per hour
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Practical nutrition and training advice for people with big goals and busy lives, sent when I've got something genuinely useful to share. Free, and you can unsubscribe at any time.

1:1 support

Want a plan built around you?

These tools give you a solid starting point. If you want your fuelling built around your training, your gut and your week, work with me directly. I'm Dr Paul Fairbairn, a SENr-registered performance nutritionist working with athletes, adventurers and anyone taking on something big.

  • 1:1 performance coaching
  • Event & expedition prep
  • Teams & organisations
See how I can help
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Performance nutrition, by email

Short emails from Dr Paul Fairbairn (PhD, SENR) on fuelling and training for big goals, whether that’s a first marathon, a season of racing or an ocean crossing. Sent when there’s something worth saying.

Short emails on fuelling and training for big goals. Sent when there’s something worth saying.

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