伊豆トレイルジャーニー takes place on Sun, Dec 13, 2026 in Matsuzaki, Japan. The main route is 69.1 km.
- Date
- Sun, Dec 13, 2026
- Start
- Matsuzaki 🇯🇵
- Distance
- 69.1 km
- Climbing
- 3,242 m
- Level
- Open to all
Izu Trail Journey is an international trail running race spanning the Izu Peninsula from Matsuzaki Port to Shuzenji Hot Spring, featuring a grueling 70km course with breathtaking coastal and mountain views.
Official event pageWhat this race demands
This 69.1 km trail running race requires sustaining forward motion across 3,242 meters of climbing over a demanding December duration.
Climbing volume
Accumulating 3,242 meters of elevation gain over a 69.1 km distance requires consistent uphill pacing and muscular endurance to manage sustained ascents.
Distance durability
Covering nearly 70 kilometers on trail terrain demands robust physical and structural resilience to withstand hours of continuous impact.
December timing
Racing in December necessitates adequate cold-weather management and appropriate layering to maintain thermal regulation throughout the long effort.
Given the prolonged duration well exceeding 2.5 hours, athletes should aim for an intake of 60 to 90 grams of carbohydrates per hour to maintain energy output.
Estimated finish times
Estimates by level, not promises. Your own number depends on your fitness on the day.
Your road to race day
Race day at 伊豆トレイルジャーニー is 16 weeks away. This is how a coach divides that time. The first phase starts now.
01Base4 weeks · Aug 24, 2026 – Sep 20, 2026
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Sep 21, 2026 – Nov 1, 2026
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Nov 2, 2026 – Nov 22, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Nov 23, 2026 – Dec 6, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Dec 7, 2026 – Dec 13, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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