FuelCenter Blog
Fueling science, no fluff.
Gel comparisons, race nutrition guides, and the data behind what actually works on race day.
London Marathon Fueling Plan: Mile-by-Mile Strategy
Course-specific fueling strategy for the 2026 London Marathon. Tower Bridge timing, Canary Wharf discipline, and what to know about Lucozade Sport.
PerformanceRunning in the Heat: How Temperature Affects Your Pace and Fueling
Research-backed breakdown of how heat slows your marathon pace and changes your fueling plan. Temperature ranges, sodium needs, and heat adaptation.
Race StrategyBoston Marathon Fueling Plan: Mile-by-Mile Strategy
A course-specific fueling strategy for the Boston Marathon. When to take gels, how to handle the Newton Hills, and how weather changes your plan.
Marathon FuelingHow Many Gels Do You Need for a Marathon? (Calculator)
The exact number of gels you need depends on your brand, carb target, and finish time. Here’s the math for every major gel brand at 80g carbs per hour.
Gel ComparisonBest Race Day Gels Ranked by Carbs Per Dollar (2026)
We ranked 7 popular race gels by carbs-per-dollar, gut reputation, and real-world usability,from budget pick Carbs Fuel to premium Maurten. Find out which gel is actually worth it for your race.