Running News Daily

You trained for months. Your splits in workouts hinted at a breakthrough. But on race day, it fell apart—not because your legs gave out, but because your fueling plan did.

From the 5K to the marathon, runners at all levels are discovering that the difference between a personal record and a personal disaster often comes down to what—and when—they eat and drink.

The Silent Saboteur

Poor fueling is one of the most common and overlooked reasons runners fail to hit their potential. “You can be in the best shape of your life and still bonk if you don’t fuel right,” says KATA coach Jimmy Muindi, a 2:07 marathoner. “I’ve seen runners collapse mentally and physically simply because they didn’t respect the science of fueling.”

Common Mistakes That Kill Races

1. Skipping breakfast – Whether it’s nerves or an early start, too many runners toe the line on an empty stomach, leaving their glycogen tanks half-full.

2. Mistimed gels – Taking a gel too late—or not at all—leads to sudden energy crashes, especially in races 10 miles and up.

3. Underhydration – Dehydration doesn’t just slow you down—it affects focus, coordination, and thermoregulation.

4. New foods on race day – Testing out a new sports drink or energy bar mid-race can spell disaster for your gut.

Real-World Wake-Up Calls

Derek Alvarez, a 28-year-old runner from Denver, trained for a sub-3:00 marathon for months. At mile 21 of the Los Angeles Marathon, his energy vanished. “I only had one gel and barely drank water because I was trying to avoid bathroom stops,” he said. He ended up walking the last 5K and finished in 3:22.

After revising his fueling plan—eating 300 calories of oatmeal and banana pre-race, and taking a gel every 30–35 minutes—he came back six months later and ran 2:58 in Chicago.

Elite Insights

Even top-level athletes fine-tune their fueling obsessively. “It’s not just about carbs or calories. It’s about timing, digestion, and routine,” says Coach Dennis at KATA Portugal. “We train our athletes to practice fueling just like they train their pace.”

Fuel to Win

To help avoid the most common pitfalls, here’s a quick checklist every runner should use:

• Eat a familiar carb-based meal 2–3 hours before the race.

• Hydrate with water and electrolytes starting 24 hours out.

• Plan to consume 30–60 grams of carbs per hour in races over 90 minutes.

• Practice your fueling strategy during long runs.

Final Thoughts

You wouldn’t drive cross-country without gas in the tank. So don’t line up at your next race underfueled. Your training deserves better—and your PR.