SFuels.

SFuels. Worlds 1st ZONE based fueling system, max endurance performance, gut resilience, stronger finishes.

When you’re heading out for a 10+ mile run, the right pre-run snack can make all the difference. 🏃‍♀️💨Low-carb and light...
10/08/2025

When you’re heading out for a 10+ mile run, the right pre-run snack can make all the difference. 🏃‍♀️💨

Low-carb and light keto options keep your energy steady, so you’re not crashing halfway through. Pair your snack with SFuels PRIME before you head out, and if you’ll be running for hours, sip on Zone 2 mid-run to keep fueling your endurance. ⚡

Think almond butter + celery, avocado + turkey roll-ups, or coconut yogurt + chia seeds — simple, powerful fuel that works with your body, not against it.

✨ Snack smart. Prime your body. Fuel with Zone 2. Go longer, stronger. ✨

Check out more fueling strategies at sfuelsgolonger.com 💪


Training zones use different energy systems, which means your fueling should change too. 🚴‍♂️🏃‍♀️💪 One fuel doesn’t fit ...
10/06/2025

Training zones use different energy systems, which means your fueling should change too. 🚴‍♂️🏃‍♀️💪 One fuel doesn’t fit all—that’s why SFuels created a complete system designed for every stage of your workout.

Before you train,
✅️ SFuels Primed gets you started with easy-to-digest fuel and hydration, giving you energy without a sugar crash. During long, steady sessions,
✅️ SFuels Zone 2 supports fat oxidation and endurance, helping you stay fueled without overloading on carbs. When you hit tempo or threshold work,
✅️ SFuels Zone 4 blends smart carbs and fats to give you the sustainable energy you need as carb demand climbs. And for those all-out efforts, ✅️ SFuels Zone 5 delivers fast carbs and electrolytes for peak performance when intensity is at its highest.

The key is understanding that training fuel and race fuel are not the same. Training fuel builds metabolic efficiency and supports your body’s adaptations, while race fuel is about maximizing performance when it counts.

Fuel smart in training, race harder on the big day—with SFuels. ⚡

🚀 Why Zone 4 Is Different From Every Other FuelMost race fuels are loaded with fructose, simple sugars, and artificial j...
09/29/2025

🚀 Why Zone 4 Is Different From Every Other Fuel

Most race fuels are loaded with fructose, simple sugars, and artificial junk that can:
❌ Spike insulin and shut down fat oxidation
❌ Cause GI distress (cramps, bloating, bathroom stops)
❌ Lead to sugar crashes mid-race

SFuels Zone 4 flips the script.

🔬 Science-Driven Fueling

Uses Highly Branched Cyclic Dextrin (HBCD) + Maltodextrin → delivers fast energy, but with a slower gastric emptying rate, reducing gut distress and keeping blood sugar more stable than traditional glucose/fructose fuels.

Incorporates Extended Substrate™ (C8 + C10 MCTs + L-Glutamine) → protects gut lining, supports recovery, and helps with DOMS reduction post-workout.

Zero fructose, zero sugar alcohols, zero gluten → clean, stable energy without compromising performance or long-term health.

⚡ Performance + Recovery In One
Most fuels just give you carbs. Zone 4 not only fuels your threshold and race pace efforts, it also includes nutrients that actively support gut resilience, reduce muscle soreness, and speed recovery.

🏅 Trusted By Pros & Clinicians
Zone 4 is designed with input from endurance nutrition researchers (like Dr. Mikki Williden) and performance physiologists (like Dr. Dan Plews). It’s backed by science and battle-tested by elite athletes in real races.

💡 Bottom line:
Zone 4 isn’t just another carb drink. It’s a hybrid fuel system designed to let you push harder, last longer, and recover faster — without the sugar crashes or gut bombs of typical race fuels.

# # # 🏃🏻‍♂️

🔥 Meet Zone 2 – the engine-building zone.This is where endurance athletes build mitochondria, train their body to burn f...
09/29/2025

🔥 Meet Zone 2 – the engine-building zone.
This is where endurance athletes build mitochondria, train their body to burn fat (not sugar), and strengthen their aerobic base. 🫀💨

The problem? Most fuels load you with carbs that shut down fat oxidation. ❌🍞

That’s why we created SFuels ZONE 2 (Train):
✅ Extended Substrate™ (C8+C10 MCT + glutamine)
✅ Electrolytes for endurance
✅ Zero sugar, zero gut distress
✅ Backed by science + trusted by coaches + clinicians

Perfect for long runs, steady rides, and base training. Train smarter, not sugar-loaded. 🚴‍♂️🏃‍♀️


💡 Not all training is the same — and neither should your fueling be. That’s why SFuels Go Longer was built around the sc...
09/08/2025

💡 Not all training is the same — and neither should your fueling be. That’s why SFuels Go Longer was built around the science of training zones.

⚡ Zone 2 (Everyday Endurance)
Low-intensity, fat-oxidation work. Our SFuels Zone 2 product is designed to help you burn more fat for fuel, sparing glycogen and extending energy without the constant need to refuel.

🔥 Zone 4 (Race Pace / High Intensity)
When you shift into higher intensity efforts, carbs become critical. SFuels Zone 4 delivers the right glucose support for threshold sessions and long race surges—without gut distress.

🚀 Zone 5 (Max Effort / Sprint)
Explosive, peak-power efforts demand immediate carb access. SFuels Zone 5 gives fast, efficient energy delivery for those all-out pushes when every second counts.

🧬 What makes SFuels different?
Our patented, science-backed Extended Substrate technology uniquely combines fatty acids with amino acids to train your body to use fat as a primary fuel source—minimizing the crash, cutting GI distress, and helping you go longer without constant sugar hits.

🏅 That’s the SFuels difference: fuel smarter, race stronger, recover faster.

👉 Tap the link in bio to discover your zone.

Most sports nutrition still relies on sugar-heavy fueling that spikes blood sugar, stresses the gut, and leads to the dr...
09/05/2025

Most sports nutrition still relies on sugar-heavy fueling that spikes blood sugar, stresses the gut, and leads to the dreaded crash. ⚡

That’s why SFuels was created—to give endurance athletes a smarter, science-backed solution for training and racing.

🔬 At the core is our patented Extended Substrate Formula—an innovation unique to SFuels. By fusing two naturally occurring medium-chain fatty acids with the amino acid glutamine, we deliver a new category of fuel:
✅ Efficient, effective ingredient dosing
✅ Supports low-carb training + fat adaptation
✅ Sustains energy without sugar dependency
✅ Helps you fuel for the Right Training, Right Time

SFuels isn’t just another fuel—it’s a performance nutrition system built around physiology, not marketing hype.

🔥 Want our FREE SFuels Fueling Guide to learn how to fuel smarter, last longer, and recover better?
👉 Comment FUEL below and we’ll send it to you!

Optimizing ZONE 4 high intensity training and racing simulations? 🏃‍♂️Next level. New Normal. See 👉BIO
04/16/2025

Optimizing ZONE 4 high intensity training and racing simulations? 🏃‍♂️Next level. New Normal. See 👉BIO

NEW NORMAL for your 2025 Aerobic 🚴‍♂️🏃‍♂️🏊‍♂️base build. SFuels ZONE 2 endurance drink with Extended Substrate(TM) to ma...
02/12/2025

NEW NORMAL for your 2025 Aerobic 🚴‍♂️🏃‍♂️🏊‍♂️base build. SFuels ZONE 2 endurance drink with Extended Substrate(TM) to max🔥 aerobic development, build gut resilience, minimize muscle soreness. Zero fructose, just Extended Substrate and electrolytes. Try now👀 buy 🛒 SFuels ZONE 2 in Bio. 🫐🍓🍋 flavors.

Early morning intervals. Prime your 😊mind, prime your ⚡️energy systems with SFuels PRIMED. Clean label Canitine, Green-...
01/29/2025

Early morning intervals. Prime your 😊mind, prime your ⚡️energy systems with SFuels PRIMED. Clean label Canitine, Green-Tea caffeine extract, Taurine and B-vitamins. No Fructose, No Sugar-alcohols, No Gluten. Light 🍉Watermelon. See👉 Bio

Enter NEW HIGHS🚀 for your Zone 2 Aerobic 🚴‍♂️🏃‍♂️🏊‍♂️Build. SFuels ZONE 2 endurance drink with Extended Substrate(TM) - ...
01/27/2025

Enter NEW HIGHS🚀 for your Zone 2 Aerobic 🚴‍♂️🏃‍♂️🏊‍♂️Build. SFuels ZONE 2 endurance drink with Extended Substrate(TM) - max🔥 aerobic development, build gut resilience, minimize muscle soreness. Zero fructose, just Extended Substrate and electrolytes. Try now👀 buy 🛒 ZONE 2 in Bio. 🫐🍓🍋 flavors.

Maximizing your ZONE 2 🚴‍♂️🏊‍♂️🏃training and nutrition VIEW 🎥 SFuels LIVE video channel - ZONE 2 Playlist.
01/18/2025

Maximizing your ZONE 2 🚴‍♂️🏊‍♂️🏃training and nutrition VIEW 🎥 SFuels LIVE video channel - ZONE 2 Playlist.

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The home of SFuels.

Going Longer an objective for all endurance athletes. But how we train, eat and live now, will effect not only our performance today, but also our future wellbeing, and the longevity of our competitive ultra-endurance lifestyle.

For many athletes, the ultra-endurance lifestyle includes years of high-carb food during training and racing...and as research shows us, high-carb-sugars and lifestyles, can trigger acute inflammation now, and be responsible for longer-term, more chronic health conditions.

Triathlons, Ultras, endurance racing - it's about going long. Make your ultra-endurance lifestyle last, with SFuels.

Manufactured and distributed from California, USA. Managed by Australians, based at our worldwide headquarters, in Raleigh, North Carolina.