# Run Coaches Say "Banking Time" in a Marathon Only Backfires
Marathon runners often attempt to build a time cushion early in the race, a strategy coaches call "banking time." This approach consistently fails, according to running professionals, because maintaining an unsustainably fast pace early depletes glycogen stores and triggers premature fatigue.
The physiology is straightforward. Running faster than your goal pace in miles one through thirteen taxes your aerobic system harder than planned. Your body burns through stored carbohydrates faster. By mile eighteen, when the race intensifies, you lack the fuel to maintain speed. The result: a dramatic slowdown that erases any early gains.
Elite running coaches recommend three concrete strategies instead. First, practice negative splits during training. Run the second half of long runs faster than the first half. This teaches your body to produce power when fatigued and builds confidence that you can accelerate when it matters most.
Second, execute an even-paced strategy for the first half. Your goal marathon pace should feel controlled and sustainable for the opening thirteen miles. Hitting your target pace from the gun establishes a rhythm you can maintain through mile twenty.
Third, employ a dynamic pacing plan based on course topography. Run slightly slower on uphills and slightly faster on downhill sections, keeping overall pace consistent. This distributes effort intelligently across the course rather than front-loading intensity.
Tempo runs during training reinforce these pacing patterns. Running at goal marathon pace for eight to ten miles teaches your body to recognize and hold your target speed. Race day execution becomes automatic rather than reactive.
The mental component matters equally. Runners who abandon banking time feel less pressure early. They conserve mental energy for the crucial miles eighteen through twenty-six, when mental toughness determines outcomes. Patience in the opening miles creates power in the final miles. Data from major marathons