Running

서울레이스

서울레이스 takes place on Sun, Oct 11, 2026 in Seoul, South Korea. The main route is 21.1 km.

The Seoul Race is a premier running event featuring half-marathon and 11km courses through the heart of Seoul.

What this race demands

This half-marathon covers 21.1 kilometers through the heart of Seoul in October, requiring sustained aerobic endurance over a standard distance.

Aerobic endurance

Covering 21.1 kilometers demands a well-developed aerobic engine capable of maintaining a steady pace over a prolonged duration.

Pacing discipline

The half-marathon distance requires an even distribution of effort from start to finish to avoid early fatigue.

Aim for 30 to 60 grams of carbohydrates per hour to maintain energy output throughout the half-marathon effort.

Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.

Estimated finish

1:45–2:10

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

Race day at 서울레이스 is 7 weeks away. This is how a coach divides that time. The first phase starts now.

01Build1 week · Aug 24, 2026 – Aug 30, 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 · Aug 31, 2026 – Sep 20, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
03Taper2 weeks · Sep 21, 2026 – Oct 4, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
04Race week1 week · Oct 5, 2026 – Oct 11, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.

Organising this race?