First Marathon Fueling Tips (I Wish I Knew)
February 24, 2026 — 5 min read
Five things to remember on race week, in order. The full reasoning behind each one is in The First Marathon Fueling Guide. This is the version you can print, fold, and stick in your race-day kit.
The five most common fueling mistakes first-time marathoners make, with the fix for each. The full reasoning lives in the canonical guide; this page is what you stick in your race-day kit.
1. Practice fueling on every long run
Not because you'll bonk on a 50-minute run, but because that's your training ground. Your gut needs weeks to adapt to processing fuel at effort. Race day is not the time to figure this out.
Full progression rules: The Gut Training Protocol.
2. Start at 15 minutes, then every 20
First fuel at 15 minutes in, then every 20 minutes after. Small amounts, consistent timing. Think of it like keeping a campfire going with small sticks rather than waiting for it to die and throwing a log on. Don't wait until you feel like you need it. By the time you're hungry, you're already behind.
Why this rhythm: The 20-Minute Pulse.
3. Don't skip sodium
Sodium replaces what your sweat takes out and keeps your plasma volume topped off. The math is set by your sweat rate and the temperature, not by your carb intake. Most first marathons land around 1,000 mg/h baseline, scaled up if it's hot. Skip it and your cooling and circulation start to wobble well before your legs do.
How the engine handles sodium: Sodium Isn't Just for Cramps.
4. Aim for 60 g/h, not whatever the elites are doing
If you've never fueled during training, start around 30 to 40 g of carbs per hour on your long runs. Most first marathons land at 60 g/h after about 6 to 8 weeks of qualifying long-run practice. Focus on timing first, dial in amounts later. 120 g/h is what gut-trained elites running ultra-distance events do. It is not the target for your first marathon.
How the engine picks your number: How Many Carbs Per Hour.
5. Honey works, save your money
Maple syrup or honey with a pinch of sea salt works. Brings the cost per "gel" from $2 to $4 down to about 30 cents. The fundamentals matter more than the brand.
Recipes that have actually been tested at race intensity: How to Make Your Own Performance Gels.
Race day checklist
// PACK THE NIGHT BEFORE
- ☐ Bib + safety pins
- ☐ Photo ID
- ☐ Phone + charged headphones
- ☐ Gels (count: ___)
- ☐ Water bottle / handheld
- ☐ Salt tabs (if heavy sweater)
- ☐ BodyGlide / anti-chafe
- ☐ Throwaway warm layer
- ☐ Sunscreen
- ☐ Gum / mint for the start corral
- ☐ Post-race carb snack in gear check
Or let PODIUM handle the math
This stuff isn't complicated, but it's a lot to keep track of mid-run when your brain is foggy and your legs are asking questions you don't want to answer.
PODIUM calculates your carb and sodium needs based on your workout, then tells you when to fuel with audio cues so you don't have to think about it.
The full guide does the explaining. The app does the math. This page does the reminding.
Frequently asked questions
// FREE RESOURCE
The First Marathon Fueling Protocol
The exact fueling blueprint to execute your first 26.2 miles with zero guesswork.
- •Carb & sodium guidelines
- •Race week and race day fueling timeline
- •Gut training program
