Run like never before, recover like never before
SUB3® is the ultimate performance and recovery fuel for runners. Packed with premium ingredients to boost endurance, optimize hydration, and speed muscle repair, designed for runners of every level.
SUB3® - The complete running solution
A complete system for energy, endurance, and recovery. Our two-step formula supports runners from start to finish.
(PRE-RUN) ENDURANCE FUEL™
★★★★★
Fuels your run with 40g dual-carbs, electrolytes, and caffeine, optimizing hydration and energy so you start strong, stay sharp, and perform at your absolute peak.
(POST-RUN) RECOVERY FUEL™
★★★★★
3:1 carb-to-protein ratio + magnesium accelerates glycogen replenishment, muscle repair, and hydration, helping you recover faster and run again sooner.
THE SCIENCE BEHIND SUB3®
Evidence based formulas tailored for Runners
BOOSTS ENDURANCE BY UP TO 8%
Our pre-run glucose-fructose blend is inspired by research showing that drinks combining these carbohydrates at high intake rates can improve running performance by around 8 % during 2.5–3 hour events.
IMPROVES HYDRATION AND GUT COMFORT
By combining different carbohydrates and balanced electrolytes, our fuel is formulated to promote better fluid delivery and help reduce gastrointestinal discomfort during intense exercise.
DELAYS FATIGUE BY UP TO 34% WITH CAFFEINE
A moderate dose of caffeine in our formula can reduce perceived effort and extend time to fatigue; one trial reported a 34 % longer time to exhaustion with caffeine versus placebo.
SPEEDS UP RECOVERY BY UP TO 38%
In a crossover study, adding protein to carbohydrate (≈ 3:1 carbohydrate–protein ratio) increased muscle glycogen storage rate by about 38 % during the first four hours of recovery compared with carbohydrate alone.
BOOSTS NEXT-DAY ENDURANCE BY ~27 %
A 3:1 carb-protein drink post-exercise enhances next-day endurance by about 27%, significantly increasing time-to-exhaustion compared to carbs alone.
REDUCES MUSCLE SORENESS AND IMPROVES RECOVERY
Our formula includes magnesium to support muscle function; some studies suggest that daily magnesium supplementation can help reduce muscle soreness and aid recovery after strenuous exercise.
Tarsitano MG et al., Journal of Translational Medicine (2024)
★★★★★
Trusted by Australia's Elite Runners
SUB3® is built for runners of all levels whether you’re chasing a sub-3 marathon, training for your first race, or pushing your limits in every session. Our athletes live the mission of SUB3®, trusting it to fuel their performances and recover stronger.
"SUB3 has changed the way I train. The products work together seamlessly, and I’ve never felt stronger or more prepared. From fueling my long runs with sustained energy to helping me recover faster after tough sessions."
"In ultras, it’s not just about the race — it’s about stacking weeks and months of training. Between 100km weeks, work, and life, having a fuelling system that’s simple and actually works has been a game-changer. SUB3 helps me recover faster and show up ready the next day."
"I used to finish long runs wrecked. Now, I’m recovering faster and backing up better each week. SUB3 simplified my fuelling Pre before, Post after and it’s made a massive difference in consistency and injury prevention."
"Working with endurance athletes across elite sport, I’ve seen firsthand how critical it is to get fuelling right not just for performance, but for long-term health and injury prevention. What stands out about SUB3 is that it’s a performance system designed around the real-world demands of endurance sport. The formulations reflect the science, the timing is practical, and together, they support runners through every stage—from preparation to recovery."
Got Questions?
Who is SUB:3 for?
SUB:3 is designed for runners of all levels looking to optimize their energy, hydration, and recovery—whether you’re training for a marathon, chasing a personal best, or simply aiming to feel stronger after every run.
While every runner is unique, the fundamentals of performance and recovery remain the same. Your body needs carbohydrates for fuel, electrolytes for hydration, and protein for muscle repair. SUB:3 delivers science-backed nutrition in a simple, effective system designed specifically for the demands of running.
If you have specific dietary concerns, consult with a healthcare professional before use.
What kind of benefits can I expect from taking SUB:3?
Pre-Run Formula:
Designed to prime your body and mind before every run. You can expect:
- A precise blend of fast and slow-release carbohydrates fuels your session without the sugar spikes and crashes.
- Balanced electrolytes help you absorb fluids more efficiently and keep cramping at bay.
- Caffeine sharpens your mental game so you stay locked in from the first step to the last.
- Clean, runner-tested ingredients mean smooth digestion and a steady finish.
Post-Run Formula:
Created to accelerate recovery and help you bounce back faster:
- A 3:1 carb-to-protein ratio replenishes glycogen and supports muscle repair where it counts.
- Includes anti-inflammatory ingredients to ease DOMS (delayed onset muscle soreness).
- Replaces what you lost in sweat with the right balance of electrolytes and minerals.
What makes SUB:3 different from other performance products?
Most supplements are built for gym workouts, not running. SUB:3 is engineered specifically for endurance: fast-digesting, gut-friendly fuel designed for runners. While many athletes juggle separate powders, pills, and drinks—magnesium tablets, electrolytes, protein shakes, and carbs—SUB:3 simplifies it all into one purpose-built formula. Just fuel that works, before and after your run.
Will SUB:3 help me run a sub-3 marathon?
While no supplement alone can guarantee a sub-3-hour marathon, SUB:3 is specifically formulated to support the rigorous training required to achieve that goal. Our products are designed to enhance endurance, improve hydration, sustain energy, and accelerate recovery—key factors in maintaining consistency and intensity throughout a demanding training cycle.
Think of SUB:3 as your performance edge: a scientifically informed tool to help your body go further, adapt faster, and recover more efficiently. The rest is up to your commitment, discipline, and training.
To support your journey even further, we also offer a FREE Marathon Training Plan Generator, which creates a fully customized plan based on your current fitness level, pace, schedule, and lifestyle—so you can train smarter, not just harder.
Is SUB:3 approved for competitive athletes?
Yes. SUB3® is independently tested for banned substances to ensure it meets the highest standards of safety and compliance. We understand the importance of clean sport, which is why we take rigorous steps to verify that our products are safe for use by tested athletes.
If you require certification for your sport or organization, we’re happy to provide documentation. Simply contact us and we’ll supply the relevant batch testing reports.