What characterizes endurance cycling?
Endurance cycling involves prolonged efforts, usually lasting more than two hours, with continuous energy demand, progressive loss of fluids and electrolytes, and greater gastrointestinal stress. Maintaining performance depends on a consistent strategy of carbohydrate intake, hydration, and sodium replacement throughout the entire ride.
Why is nutritional strategy decisive in long duration cycling?
During the ride, glycogen stores gradually decrease. Without proper replenishment, it is common to see a drop in power, early fatigue, and difficulty maintaining pace. In addition, dehydration and sodium loss impair muscle function, thermoregulation, and tolerance to effort.
A well planned strategy helps to:
Maintain energy availability.
Preserve performance over the hours.
Reduce the risk of cramps and gastrointestinal discomfort.
Sustain focus and decision making during training or competition.
What is the role of carbohydrates in endurance cycling?
Carbohydrates are the main source of energy during moderate to high intensity exercise. Intake throughout the ride helps keep blood glucose stable and spares part of muscle stores.
In general, athletes benefit from about 30 to 90 g of carbohydrate per hour, depending on factors such as:
Training or race duration.
Exercise intensity.
Training level.
Gastrointestinal tolerance.
Strategies with multiple carbohydrate sources, such as glucose and fructose, support greater absorption and lower intestinal overload.
How should hydration be managed during the ride?
Hydration should match sweat rate and environmental conditions. Losses of only 2 percent of body weight in fluids can already affect performance.
In practice, it is recommended to:
Drink fluids regularly throughout the route.
Avoid long periods without drinking.
Adjust volume according to heat, humidity, and exercise intensity.
Hydration should not rely only on thirst, especially in long events.
Why replace electrolytes, especially sodium?
Sweat contains sodium, a mineral essential for fluid balance and muscle contraction. Replacement helps maintain plasma volume, reduce the risk of hyponatremia, and improve the absorption of fluids and carbohydrates.
Needs vary according to:
Individual sweat rate.
Climate and temperature.
Exercise duration.
How to build a practical strategy for endurance cycling?
An effective approach combines energy intake and hydration continuously throughout the ride.
Before training or competition:
Ensure adequate carbohydrate intake in the hours leading up to the session.
Start the exercise well hydrated.
During:
Consume carbohydrates at regular intervals.
Maintain fluid intake in a fractionated way.
Include sodium according to duration and environmental conditions.
After:
Replenish fluids and electrolytes.
Consume carbohydrates to restore glycogen.
Include protein for muscle repair.
What are the most common mistakes?
Among the main factors that compromise the strategy are:
Underestimating carbohydrate needs per hour.
Hydrating only when thirst appears.
Not testing the strategy during training before competition.
Concentrating all intake into only a few moments.
Why test the strategy in training?
The gut also adapts to training. Testing volumes, formats, and intake frequency helps reduce discomfort and improves absorption efficiency during competition.
The ideal strategy is individual and depends on experience, riding intensity, and the conditions in which the athlete trains and competes.
Scientific reference
Clauss M, Skattebo Ø, Dæhli MR, Valsdottir TD, Bastani NE, Johansen EI, Kolnes KJ, Skålhegg BS, Jensen J. Carbohydrate ingestion during prolonged cycling improves next day time trial performance and alters amino acid concentrations. Medicine and Science in Sports and Exercise. 2023;55(12):2228-2240. doi:10.1249/MSS.0000000000003264.
