Go faster, longer and stronger
After a lot of experimenting with different formulas and ingredients, testing, crashing, cramping, consulting with sports scientists and partnering with a sports nutritionist, tweaking and adjusting, my partner and I finally came up with a recipe that covered all grounds.
A drink that contains everything an athlete needs, whilst being easy on the stomach and leaving no aftertaste: electrolytes to balance minerals lost through sweating, caffeine for energy, and carbohydrates for strength and endurance.
Mr Run’s Jet Fuel has been designed to be taken during prolonged activity – in other words while you run, cycle or exercise. Alternatively it can also be taken before or after the activity, to avoid burnout and aid recovery. It is a perfect half marathon and marathon running fuel, and a perfect endurance fuel for any strenuous physical activity lasting longer than 45min, such as long distance swimming, cycling, trekking, rowing, or combat and team sports.

Go faster and longer
Mr Run’s Jet Fuel has been scientifically developed to help endurance athletes improve their performance. It will help you comfortably smash your PBs, whether you’re cycling London to Brighton or running your first half marathon.

Instant energy
The rapid acting formula full of easily digestible carbs in our Jet Fuel amplifies your blood glucose levels and re-charges your glycogen stores to give you immediate energy to burn, rather than forcing you to wait for that extra boost to kick in.

Ultimate hydration
The perfectly-balanced electrolyte ratio will keep away dehydration, so you won’t have to smash litre upon litre of water once you cross the finish line in order to try and capture all the salt and minerals you’ve lost while sweating.

Easy on the stomach
We don’t do gut bombs! This quick-digesting formula won’t leave you bloated or gassy, meaning you can concentrate on catching the guy in front of you, instead of dealing with indigestion, stomach cramps or being ‘caught short!’
Proudly made in the UK
Shipping information
UK DELIVERIES: The expected total UK delivery time is 3-4 working days. All UK orders will be packed and dispatched within 24 hours of receipt and shipped via Royal Mail Tracker 48 service.
INTERNATIONAL DELIVERIES: Your order will be shipped within 24 hours of payment via Standard International carriage.
NOTE: Some countries, including EU countries, may charge extra import duties before releasing your shipment. Please check your country’s import rules before placing your order.
Science & research
Mr Run’s Jet Fuel formula is based on decades of academic research in the fields of sports science, metabolism and nutrition to make sure you’re getting the perfect formula to enhance your performance without any nasty side effects.
FAST ACTING CARBOHYDRATES:
When we engage in physical activity our muscles use carbohydrates as the main source of energy. During prolonged exercise and in the absence of carbohydrate intake from food, the body starts to use up the energy it has previously stored for ‘rainy days’. That stored form of energy is called glycogen. The carbohydrates in Mr Run’s Jet Fuel have been optimised to be rapidly digested and transported to your muscles fast, to top up your glycogen stores there before they run out. In this way the fuel helps you to maintain energy levels, avoid crashes and ‘bonks’, and delay the onset of fatigue.
HYDRATING ELECTROLYTES:
Electrolytes are minerals that are crucial for smooth functioning of our body and keeping cells and organs well hydrated. Electrolytes are lost through sweating and cannot be replenished by drinking plain water. Supplementing electrolytes is advised during any prolonged, sweat-inducing exercise, such as medium and long distance running. Possible symptoms of dehydration and low electrolyte levels in runners include: cramps, side stitches, muscle twitches, dizziness, confusion, general fatigue.
CAFFEINE:
Supplementation with caffeine has been shown to enhance various aspects of physical exercise performance and endurance.
SELECTION OF SUPPORTING RESEARCH:
Convertino, V. A. et al. (1996) ‘ACSM Position Stand: Exercise and Fluid Replacement’, Medicine & Science in Sports & Exercise, 28(10). doi: 10.1097/00005768-199610000-00045.
Galloway, S. D. R. (1999) ‘Dehydration, Rehydration, and Exercise in the Heat: Rehydration Strategies for Athletic Competition’, Canadian Journal of Applied Physiology, 24(2). doi: 10.1139/h99-016.
Guest, N. S. et al. (2021) ‘International society of sports nutrition position stand: caffeine and exercise performance’, Journal of the International Society of Sports Nutrition, 18(1). doi: 10.1186/s12970-020-00383-4.
Kerksick, C. M. et al. (2018) ‘ISSN exercise & sports nutrition review update: research & recommendations’, Journal of the International Society of Sports Nutrition, 15(1). doi: 10.1186/s12970-018-0242-y.
Maughan R.J. (2003) Impact of mild dehydration on wellness and on exercise performance. Eur J Clin Nutr.;57 Suppl 2:S19-S23. doi:10.1038/sj.ejcn.1601897
McDermott, B. P. et al. (2017). National Athletic Trainers’ Association Position Statement: Fluid Replacement for the Physically Active. Journal of athletic training, 52(9), 877–895. https://doi.org/10.4085/1062-6050-52.9.02
Meyer, F., Szygula, Z. & Wilk, B. (2022) Fluid Balance, Hydration, and Athletic Performance. Book. Taylor & Francis.
Nancy R Rodriguez et al. (2009) ‘Position of the American Dietetic Association, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and Athletic Performance’, Journal of the American Dietetic Association, 109(3). doi: 10.1016/j.jada.2009.01.005.
O’Rourke, M. P. et al. (2008) ‘Caffeine has a small effect on 5-km running performance of well-trained and recreational runners’, Journal of Science and Medicine in Sport, 11(2). doi: 10.1016/j.jsams.2006.12.118.
Rowlands, D. S. et al. (2015) ‘Fructose–Glucose Composite Carbohydrates and Endurance Performance: Critical Review and Future Perspectives’, Sports Medicine, 45(11). doi: 10.1007/s40279-015-0381-0.
Tappy, L. and Rosset, R. (2019) ‘Health outcomes of a high fructose intake: the importance of physical activity’, The Journal of Physiology, 597(14). doi: 10.1113/JP278246.
Allergies & warnings
Mr Run’s Jet Fuel is dairy free, gluten free, egg and nut free, and is suitable for vegetarians and vegans. It contains no known allergens.
This product contains a low amount of caffeine and is therefore not suitable for pregnant or nursing women or anyone under the age of 18.