Taiwan Action Asia 50 - Shihmen Reservoir takes place on Sat, Dec 12, 2026 in Shihmen Reservoir, Taoyuan, Taiwan. The main route is 50 km.
- Date
- Sat, Dec 12, 2026
- Start
- Shihmen Reservoir, Taoyuan 🇹🇼
- Distance
- 50 km
- Climbing
- 2,824 m
- Level
- Open to all
This trail running event guides athletes through lush forests and dramatic mountain ridgelines around the iconic Shihmen Reservoir in Taoyuan.
Official event pageWhat this race demands
This 50-kilometer trail running event requires sustained endurance over nearly 3,000 meters of climbing across mountain ridgelines and forest trails in December.
Climbing volume
Accumulating 2,824 meters of elevation gain over a 50-kilometer distance demands significant vertical resilience and specific preparation for steep ascents and descents.
Muscular durability
Navigating technical mountain ridgelines and forest terrain for an extended duration places high repetitive load on the lower limbs.
Aerobic endurance
The considerable distance and elevation profile require a well-developed aerobic base to sustain forward motion over many hours.
A sustained effort of this duration requires consistent carbohydrate intake of 60 to 90 grams per hour to maintain energy levels.
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 Taiwan Action Asia 50 - Shihmen Reservoir is 16 weeks away. This is how a coach divides that time. The first phase starts now.
01Base4 weeks · Aug 23, 2026 – Sep 19, 2026
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Sep 20, 2026 – Oct 31, 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 1, 2026 – Nov 21, 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 22, 2026 – Dec 5, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Dec 6, 2026 – Dec 12, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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