Running

제25회 김제새만금 지평선 전국마라톤

제25회 김제새만금 지평선 전국마라톤 takes place on Sat, Oct 3, 2026 in Gimje, South Korea. The main route is 21.1 km.

Held during the Gimje Horizon Festival, the course takes runners along flat roads bordered by golden fields and blooming cosmos flowers.

What this race demands

This half marathon requires sustained aerobic output and pacing discipline over 21.1 kilometers on a flat course.

Aerobic Endurance

Covering 21.1 kilometers requires a well-developed aerobic engine capable of maintaining a steady running rhythm for over an hour.

Pacing Discipline

The flat course profile removes terrain-induced pacing breaks, demanding strict adherence to a target output to prevent early fatigue.

Consume 45 to 60 grams of carbohydrates per hour to maintain energy levels throughout the duration of the half marathon.

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 제25회 김제새만금 지평선 전국마라톤 is 6 weeks away. This is how a coach divides that time. The first phase starts now.

01Peak3 weeks · Aug 23, 2026 – Sep 12, 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 13, 2026 – Sep 26, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
03Race week1 week · Sep 27, 2026 – Oct 3, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.

Organising this race?