Tapering Before a Race: Cut Volume, Keep Sharpness
Taper week feels wrong: you are running less while your brain screams that fitness is leaking. The conflict is fatigue masking fitness versus the urge to “top up” with extra miles. Done well, a taper removes fatigue faster than fitness — which is the entire point.
How Long and How Deep
Rough recreational defaults: ~5–7 days for 5K/10K, ~7–10 days for half, ~2–3 weeks for marathon (progressive cuts). Drop weekly volume on the order of ~40–60% from peak while keeping some short race-pace or stride work. Race-week specifics: race week preparation. Lock goal pace with the Pace Chart and Race Predictor before the taper starts — then stop chasing a faster fantasy number mid-cut.
Worked Scenario: 70 km Peak → Marathon Taper
Peak week 70 km. Two weeks out: ~45–50 km with a shorter long run and one reduced quality session. Race week: ~25–35 km, mostly easy, plus a few strides or short goal-pace reps. Example sharpening: Tuesday 5 × 1 min at goal marathon pace with equal jog; Thursday easy 30 min + 4 strides; Saturday shakeout 20 min. You are not “losing” the long run — you are arriving with glycogen and legs that can use it.
Heavy Legs and Glycogen
Many runners feel sluggish mid-taper as training stress drops and carbs rise. That heaviness is often temporary, not proof you need another 20K. Keep easy days easy; do not add gray-zone junk to “feel worked.”
Taper percentages are guidelines, not lab prescriptions. Highly trained runners sometimes taper longer; newer runners often need less drama and simply a quieter final week. Illness, travel, and heat change the plan. A taper cannot fix an underbuilt aerobic base — it only expresses the fitness you already earned.
Keep-Intensity Decision Rule
If a session adds meaningful fatigue that will still be present on race day, cut it. If it is short, familiar, and mainly reminds your legs of goal pace (strides, brief race-pace reps), keep it. When unsure, choose the easier option and protect sleep. Related: deload weeks (training blocks) vs race tapers (event-timed).
→ Set a realistic goal · → Race split charts
FAQ
Will I lose fitness in a two-week taper?
You lose fatigue faster than aerobic fitness. Flatness mid-taper is common; race day usually feels different if you did not sneak in extra hard work.