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Itabashi City Marathon race-day plan

A race-day plan for Itabashi City Marathon: timing, warm-up, pacing guardrails, and a simple fueling schedule to practice in training.

Last updated/Feb 03, 2026, 02:41 PM

The race-day principle: decisions should already be made

Race day is for execution, not improvisation. If something is new, it’s a risk.

3–4 hours before start

  • Eat a breakfast you’ve practiced.

  • Sip fluids normally; avoid “panic chugging.”

60–90 minutes before

  • Arrive early enough to remove stress.

  • Final bathroom + kit check.

10–20 minutes before

  • Short warm-up (jog + a few strides) if it helps you feel smooth.

  • Start line cue: “too easy is correct.”

During the race

  • Start fueling early and stick to a repeatable schedule.

  • If it’s hot or hilly, pace by effort and let splits drift.

Back to the athlete guide.

Verification reminder

Race details change between editions (dates move, routes get rerouted, and registration rules update). Use this page as a starting point, then confirm time-sensitive details on the official site close to race day.

Training guardrails

  • Keep easy runs truly easy so workouts stay high quality.
  • Progress one variable at a time (volume first, then intensity).
  • Use cutback weeks every 3–4 weeks to absorb training.
  • If pain changes your gait, scale back and get assessed.

How to use this guide

Treat this page as a decision checklist:

  1. Confirm the race date and official logistics.
  2. Choose a realistic training plan length (16–24 weeks is common).
  3. Practice fueling and pacing in long runs.
  4. Keep race week simple: tested shoes, tested gels, conservative start.

Verification reminder

Race details change between editions (dates move, routes get rerouted, and registration rules update). Use this page as a starting point, then confirm time-sensitive details on the official site close to race day.

Training guardrails

  • Keep easy runs truly easy so workouts stay high quality.
  • Progress one variable at a time (volume first, then intensity).
  • Use cutback weeks every 3–4 weeks to absorb training.
  • If pain changes your gait, scale back and get assessed.

Checklist

Do this, not that

Race-day checklist

  • Eat a practiced breakfast (no experiments).
  • Arrive early enough to remove stress.
  • Final kit check: shoes, socks, anti-chafe, gels.
  • Warm up lightly; don’t burn matches.
  • Start conservatively (first 10K effort cue).
  • Fuel early and on a repeatable schedule.
  • Adjust pacing for heat/hills by effort.
  • Simplify decisions: one plan, one backup.

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Sources