Practice your fueling in training the same way you'll do it on race day — never try anything new when it counts. On your long runs and rides, rehearse the whole plan: the rate (two to three gels per hour), the timing (start early), the flavors you'll actually carry, taking each gel with water, and gradually training your gut to handle more. By race day it should feel routine, not experimental.
Why practice fueling at all?
Your stomach is trainable, and race day is the worst possible time to find out how it reacts to a new gel. The oldest rule in endurance racing is "nothing new on race day" — and fueling is where people break it most often. Everything about taking a gel gets easier with repetition: swallowing it mid-stride, remembering the timing, and — most importantly — your gut's ability to absorb carbs while you're working hard. Athletes who rehearse their fueling show up on race day with a plan their body already knows. Those who wing it discover their stomach's limits at mile 18. For the physiology of the last part, see how to train your gut to absorb more carbs.
What exactly should you rehearse?
| What to practice | How to practice it |
|---|---|
| The rate | Take two to three gels per hour on long sessions — the same rate you'll race at, not more, not less. |
| The timing | Start early, around 45 to 60 minutes in, before you feel empty. Set a watch alert so it becomes automatic. |
| The flavors | Carry the exact flavors you'll race with. Find out now which ones you still want at hour three. |
| Taking it with water | Practice the mechanics — grab, open, swallow, sip water — so it's smooth on the move. |
| Gut capacity | Gradually nudge your hourly carbs up over weeks so your gut adapts to absorbing more. |
The goal is to make race-day fueling a rehearsal of something you've already done a dozen times, not a first attempt.
How do you build it into long sessions?
Use your longest weekly run or ride as the fueling rehearsal — it's already the session that most resembles race demands. A simple progression: for the first few weeks, just practice the mechanics and timing (one gel at the 45-minute mark, then every 30 minutes, each with water). Over the following weeks, nudge your hourly intake up toward your race target so your gut adapts to the load. In the final weeks before your event, run your exact race-day plan — same flavors, same rate, same timing — as a full dress rehearsal. Start early in every session; a gel does the most good taken before you're running low, not as a rescue once you're already fading. See when to take your first gel for the timing logic.
A few practice-day pointers
- Match race conditions where you can — similar time of day, similar effort, similar terrain. Fueling that works on an easy jog may feel different at race pace.
- Log what you take — note the flavor, the timing, and how your stomach felt. Patterns show up fast.
- Fix problems in training, not on race day — if a gel sits heavy, adjust the rate or add more water and try again next long session.
- Lock your plan a couple of weeks out — once something works, stop experimenting and repeat it.
Rehearsing with Hüma
Hüma makes the plan easy to lock in: two to three per hour, with water, started early. Each Original and PLUS gel is 24g of real-food carbs from brown rice syrup and cane sugar, with real fruit purees and concentrates and a little chia — whose fiber modulates carbohydrate uptake to a usable rate. There's more water in the formula than a thick, syrupy gel, so it's less concentrated going in — a gentler thing to rehearse with as you build your gut up. Practice the exact flavors you'll race with (Strawberries is the best-seller and an easy staple), take each with water, and by race day the whole routine feels automatic. That's the payoff: future-you at mile 20 fuels on muscle memory instead of guesswork.
Related guides
- When to take your first gel — and how often after
- How to train your gut to absorb more carbs
- How to fuel your first marathon
- Do you need gels for a 5K, 10K, or half marathon?
FAQ
How do you practice gel fueling in training?
Rehearse your full race plan on long runs and rides: two to three gels per hour, started early, the exact flavors you'll carry, each taken with water. Build it into your longest weekly session and repeat until it feels routine.
Why shouldn't you try a new gel on race day?
Because race day is the worst time to discover how your stomach reacts. Fueling gets easier with repetition — swallowing on the move, the timing, and your gut's ability to absorb carbs. Sort all of that out in training, when a bad reaction costs you nothing.
When should you start practicing fueling?
Weeks out, not the last long run. Spend the early weeks on mechanics and timing, gradually raise your hourly carbs so your gut adapts, then run your exact race-day plan as a dress rehearsal in the final weeks.
How do you train your gut to handle more gels?
Gradually. Nudge your hourly carb intake up over several weeks of long sessions so your gut adapts to absorbing more. Take gels with water and spread them out. It's a slow build, not an overnight change.
What should you take with your gels in training?
Water, every time - it helps the carbs move from your stomach into your bloodstream, and it's part of the routine you're rehearsing. Practice the exact flavors and rate you plan to race with so nothing is new on the day.
