Long-run fueling: keep a useful record of what happened
How to record food, drinks, timing and practical constraints around a long run without inventing a universal fueling prescription.
The scenario: a long run with two drink stops
You plan a Sunday long run with access to drinks at two points. Before leaving, note the expected duration, route and supplies available. Use a fueling approach you have practised or agreed with your qualified support team.
Keep planned supplies distinct from what you consumed. Carrying a drink or a gel does not show that it was used. A diary entry should describe the actual amount and the best available time.
What to capture in the diary
Record familiar foods and drinks with their quantities. If you only remember the time approximately, treat later interpretation accordingly; a neat total can conceal uncertain timing.
Useful session notes include interruptions, unusual heat, digestive discomfort and where access to fluids differed from the plan. These observations give context to pace and effort without turning one session into a clinical diagnosis.
Review the run without overclaiming
After Training combines the confirmed workout with available meal and recovery information. Review any fueling gap alongside the completeness of your diary. An unlogged drink is missing information, not proof that you drank nothing.
Compare future long runs with similar distance and demands. If the data cannot distinguish weather, pacing or training fatigue, it cannot establish that a particular product or fueling choice caused a better result.