Fuel like the research says, not like the group chat says.
Kilojoule Nutrition Lab builds fueling guides, courses, and 1:1 consulting for runners, cyclists, and triathletes — rooted in real sports nutrition research, and built for race day, not just race week.
Fueling guidance built like a lab report, not a training-plan rumor
Every guide and program is grounded in current endurance sports nutrition research and translated into plain, race-ready steps.
Research-first
Recommendations are drawn from peer-reviewed sports nutrition science, not trends — and we tell you what the evidence actually says about carb intake, hydration, and recovery.
Built for race day
Every guide comes with practical tools: fueling calculators, sweat-rate worksheets, and race-week templates you can use the same day you download them.
Fully digital, worldwide
Courses, guides, and consulting are delivered entirely online, so you can work with us from anywhere in the world, around any race calendar.
Choose the level of support that fits you
From self-paced guides to fully personalized coaching.
Marathon Fueling & Supplementation Guide
A digital guide to periodized nutrition, hydration, carbohydrate intake, and race-day supplementation for marathon runners — built to read in one sitting and use through an entire training block.
Cycling & Marathon Nutrition Courses
Structured, video-based courses on fueling, hydration, and supplementation for cyclists and marathon runners — learn on your own training schedule.
1:1 Endurance Nutrition Consulting
Personalized fueling plans with ongoing check-ins, built around your race calendar, training load, and gut-training progress.
Three steps from sign-up to race day
Choose your format
Pick a guide, course, or consulting package based on how much support you want and what’s on your race calendar.
Get your fueling plan
Receive your digital materials instantly, or book your first consulting session to build a plan around your training.
Test and adjust
Use the included tools to test your fueling in training, and adjust your approach with data — not guesswork — before race day.
Real feedback from the lab
«The fueling guides cut through so much marathon-forum noise. I finally understood why I kept hitting the wall at mile 20.»
«The 1:1 consulting felt like working with someone who actually reads the sports nutrition research, not just repeats it.»
«Practical, no-nonsense, and easy to follow even during a heavy cycling training block.»
Ready to build a fueling strategy that’s actually built for your race?
Start with a guide, join a course, or book a free intro call to talk through 1:1 endurance nutrition consulting.