MAVR BlogApril 6, 20268 min read

Running Fueling Strategy for 5K, 10K, Half Marathon, and Marathon

A practical distance-by-distance fueling guide for runners, with simple carb and gel targets you can apply in training and on race day.

RunningRace FuelingPerformance

Carb Targets by Race Distance

FeatureDistanceTypical DurationCarb Target
5K / 10K20–60 minNo in-race carbs needed for most runners
Half Marathon75–150 min30–45g carbs/hour
Marathon2–5 hours45–75g carbs/hour

Simple Race-Day Timeline

  • 2–3 hours pre-race: 1–2g carbs/kg from familiar foods.
  • 10–15 minutes pre-start: 20–25g quick carbs.
  • Half marathon+: first gel around 30–40 minutes, then every 30–40 minutes.
  • Hydrate to thirst and include sodium in warm conditions.

Get a personalized gel schedule and carb target based on your pace and finish-time goal.

Build Your Running Fuel Plan