How to Fuel Your Next Race Like a Pro

29th Aug 2025

Whether you're gearing up for your first 10k or chasing a new marathon PB, your training plan is only part of the equation. The secret weapon? A dialled-in fuelling strategy—from carbohydrate loading and hydration to smart energy intake mid-race and rapid post-run recovery.

At BikeChain, we understand that proper nutrition is the difference between hitting your stride and hitting the wall. That’s why we stock Science in Sport (SiS)—the industry leader in evidence-based endurance nutrition used by elite athletes worldwide. Today, we break down how to fuel like a pro before, during, and after your race with the help of SiS.

Pre-Race: Build Your Reserves Before the Starting Line

In the 24–48 hours before race day, it’s all about maximising carbohydrate loading and hydration. This isn't about eating pasta for dinner and hoping for the best—it’s a strategic approach to filling your glycogen stores so you can perform at your peak.

Why it matters:

Carbohydrates are your body’s primary fuel during endurance exercise. When your glycogen stores run out, fatigue sets in fast. Pre-loading with carbs ensures your body starts the race with a full tank.

Hydration is equally critical. Even mild dehydration can impair performance, slow reaction times, and increase perceived exertion.

What to use:


  • SiS BETA Fuel Energy Chews – Great-tasting, compact, and formulated with a 1:0.8 ratio of maltodextrin to fructose for enhanced carb absorption.
  • SiS GO Electrolyte Energy Powder – Combines fast-releasing carbs and essential electrolytes to keep hydration levels balanced during the final prep days.

Pre-race strategy tips:


  • Begin carb-loading 48 hours before your event.
  • Consume 80–120g of carbs per hour split across meals and snacks.
  • Sip on SiS GO Electrolyte Powder throughout the day to stay hydrated and top up sodium levels.
  • Keep fibre low 24 hours before your race to avoid any stomach upset.

Find your pre-race fuel at BikeChain today.

During the Race: Stay Energised Mile After Mile

Race day is here—and your fuelling now shifts from storage to sustained energy delivery. Your body needs a consistent supply of fast-absorbing carbohydrates to keep you going strong and avoid that dreaded wall.

Why it matters:

Research shows that endurance athletes who consume multiple forms of carbohydrate (like maltodextrin + fructose) perform better, experience fewer stomach issues, and recover quicker.

Target: 60–120g of carbs per hour, depending on the race length and intensity.

What to use:


  • SiS GO Isotonic Energy Gels – Designed to be absorbed without water, ideal for high-intensity segments and easy on the gut.
  • SiS BETA Fuel Energy Gels – Each gel delivers 40g of carbohydrate in a scientifically proven dual-carb formula for maximum oxidation rates.
  • SiS BETA Fuel Gel with Nootropics – Perfect for the final stretch. These gels add caffeine, L-theanine and Cognizin® for enhanced focus and mental clarity when it matters most.

During-race fuelling tips:


  • Start fuelling within the first 30 minutes of your run.
  • Take one gel every 20–30 minutes depending on intensity and distance.
  • Alternate between energy gels and chews to keep your intake varied and palatable.
  • Use nootropic-enhanced gels in the second half of the race to beat mental fatigue.

💡 Pro Tip: Test your race-day fuelling strategy during training to “train the gut” and avoid surprises on race day.


Fuel your race with SiS from BikeChain – shop now.

Post-Race: Recover Fast and Come Back Stronger

You crossed the finish line, clocked a PB (or at least gave it everything), and now it’s time to kickstart recovery. The first 30 minutes after your race are critical for replenishing glycogen, repairing muscle, and rehydrating.

Why it matters:


Neglecting recovery nutrition means delayed muscle repair, higher risk of soreness or injury, and sluggish performance in your next session.

That’s why the recovery window—30–60 minutes post-run—is when your body is most receptive to nutrients. You need a mix of carbs, electrolytes, and protein.

What to use:


  • SiS REGO Rapid Recovery Powder – A complete recovery drink packed with 22g of carbs, electrolytes, and 20g of protein to repair muscle and restore energy levels.
  • Pair with water or a smoothie base for an easy-to-digest post-run refuel option.

Post-race recovery tips:


  • Drink your REGO Recovery shake within 30 minutes of finishing.
  • Stretch and cool down while sipping.
  • Follow with a balanced meal 1–2 hours later to keep recovery going.

Shop SiS recovery nutrition at BikeChain and bounce back faster. Race Day Nutrition Plan

Your Race Day Nutrition Plan at a Glance

Phase Products to Use Key Goals
Pre-Race Beta Fuel Chews, GO Electrolyte Powder Carb-load + hydrate
During Race GO Isotonic Gels, BETA Fuel Gels, Nootropics Maintain energy + reduce fatigue
Post-Race REGO Rapid Recovery Powder Rebuild muscle + restore electrolytes + rehydrate

Why BikeChain Loves SiS for Race Day Nutrition

At BikeChain, we proudly stock Science in Sport because it’s more than just sports nutrition—it’s performance backed by science.


  • Used by elite endurance athletes and pros
  • Formulated based on published research
  • Features like nootropics for next-level focus
  • Informed-Sport certified for clean competition
  • Available here in Australia, delivered fast via BikeChain

So whether you’re lining up for your next marathon, trail race, or half-distance triathlon—you don’t need to guess your fuelling anymore. SiS products, now available through BikeChain, are your all-in-one solution to run harder, longer, and smarter.

Ready to Race Like a Pro?

Explore the Science in Sport range at BikeChain and start building your fuelling plan today. From chewable carbs to hydration powders and post-run recovery blends, everything you need for your next big challenge is just a click away.


👉 Shop SiS Nutrition at BikeChain Now

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Every Step Starts with a Plan

No matter your distance or pace, fuelling properly is a game-changer. With SiS and BikeChain by your side, your body will have everything it needs to go the distance, recover strong, and do it all again.


Fuel smart. Race strong. Recover fast.

Browse the full SiS endurance nutrition range now at BikeChain.com.au