BIWA100ウルトラウォーク takes place on Sat, Oct 31, 2026 in Nagahama, Japan. The main route is 100 km.
- Date
- Sat, Oct 31, 2026
- Start
- Nagahama 🇯🇵
- Distance
- 100 km
- Level
- Open to all
BIWA100ウルトラウォーク is a long-distance walking event set around Lake Biwa, featuring a 100km course starting in Nagahama and finishing at Otsu Port.
Official event pageWhat this race demands
This 100 km long-distance walking event around Lake Biwa demands exceptional muscular endurance and multi-hour physical durability to cover the massive distance on foot.
Distance durability
Covering a continuous 100 km on foot requires sustained cardiovascular stamina and the structural resilience to withstand hours of repetitive impact.
Pacing control
Managing energy output carefully from the start in Nagahama to the finish at Otsu Port is essential to prevent premature fatigue over the ultra-distance.
A sustained effort of this extreme duration requires consistent carbohydrate intake of 60 to 90 grams per hour to maintain energy levels and delay depletion.
Your road to race day
Race day at BIWA100ウルトラウォーク is 10 weeks away. This is how a coach divides that time. The first phase starts now.
01Build4 weeks · Aug 23, 2026 – Sep 19, 2026
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
02Peak3 weeks · Sep 20, 2026 – Oct 10, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
03Taper2 weeks · Oct 11, 2026 – Oct 24, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
04Race week1 week · Oct 25, 2026 – Oct 31, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Similar races
Organising this race?