Photo Robson Hatsukami Morgan / Unsplash

  • Marathon

Gunsan

Gunsan Marathon

Flat and fast along the Saemangeum Seawall, with the Yellow Sea alongside.

Next edition

2027 · 4 Apr 2027

Where

🇰🇷 Gusan, South Korea

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2027 edition

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Countdown

153

days to 4 Apr 2027

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Distance
Marathon
Course
Flat
Climb
54 m
Entry
—

About

The race

The Gunsan Saemangeum International Marathon is a prestigious World Athletics-recognized road race that highlights the unique geography of South Korea's western coast. The course is celebrated for its flat, fast terrain, running alongside the world’s longest seawall (the Saemangeum Seawall) and offering expansive views of the Yellow Sea. Often held during the cherry blossom season, the race attracts international elites and thousands of recreational runners, blending a high-performance, record-chasing environment with a festive community atmosphere that showcases Gunsan’s modern landmarks and scenic coastal beauty.

Location

Gusan, South Korea

Asia · typically 12°C (53°F) on race day

Open in OpenStreetMap

Gunsan · community

The Gunsan Race Club

Everything runners are saying about Gunsan: general talk, and posts about each year's race.

Gunsan Marathon · all years

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