大町アルプスマラソン (Ōmachi Alps Marathon) takes place on Sun, Oct 18, 2026 in Ōmachi, Japan. The main route is 42.2 km.
- Date
- Sun, Oct 18, 2026
- Start
- Ōmachi 🇯🇵
- Distance
- 42.2 km
- Level
- Open to all
The 43rd Ōmachi Alps Marathon on 18 October 2026 runs a JAAF-certified course starting and finishing at Ōmachi Sports Park, with views of the Northern Alps across foothills, countryside and lakeside.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
3:45–4:30
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Your road to race day
Race day at 大町アルプスマラソン (Ōmachi Alps Marathon) is 6 weeks away. This is how a coach divides that time. The first phase starts now.
01Peak3 weeks · Sep 7, 2026 – Sep 27, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
02Taper2 weeks · Sep 28, 2026 – Oct 11, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
03Race week1 week · Oct 12, 2026 – Oct 18, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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