Fuel & Hydration

Fuel your run right.

Get simple carb, fluid, and sodium targets for your run — plus a race-day plan. Estimates to start from, not a prescription.

Your run

1h 30m
Effort
Conditions / heat
Sweat rate

Carbs

30–60 g/hr

25–45 g for the run · ≈ 1–2 gels

Fluid

500–700 ml/hr

17–24 oz/hr · 750–1050 ml total

Sodium

500–700 mg/hr

From drink mix, chews, or salt tabs.

Your race-day / long-run plan

  1. 2–3 hours before

    Eat ≈ 105 g of carbs 2–3 hours before (bagel, oats, rice, banana) and top up fluids.

  2. Last 15 min

    A small sip of fluid.

  3. During — every 20 min

    Sip fluid to hit about 500–700 ml per hour.

  4. During — every 30–45 min

    Take carbs (gel or chews) to hit 30–60 g/hr.

  5. After

    Recovery carbs plus protein within about 30–60 minutes.

General estimates for healthy runners based on sports-nutrition ranges — not medical or individualized nutrition advice. Gut tolerance is trainable; practice your fueling in training. If you have a medical condition, are pregnant, or have GI issues, check with a professional.

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