2026 Shimada Oigawa Marathon

Name: 2026 Shimada Oigawa Marathon
Start: 2026-10-25
End: 2026-10-25
Location: Shimada, Japan

42KCombo

BonusesScenic

Oct 25, 2026 · 1 day🇯🇵 Shimada, Japan

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Key FactsSold out

Standouts

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The 2026 Shimada Oigawa Marathon is a flat, riverside out-and-back marathon along the Oi River in Shimada, Japan, on a dedicated riverbank path. It is one of Japan's flattest marathons, with a 7-hour time limit and no intermediate cutoff gates, making it beginner-friendly and popular for personal bests.

Why attend here

In late October, the Oi River valley is painted in autumn hues, and this flat, fast course along the dedicated Liberty path offers a peaceful riverside run with views of the distant Southern Alps. Afterward, warm up with a bowl of local oden or fresh wasabi, and stroll the historic streets of Shimada, where the old Tokaido road meets the river that once defined the region.

Distance from you

From Columbus, US to Shimada, JP

~13.4h · 10,690 km

Shimada

combo

typical Oct weather · 2025

25 Sat

20°14°

4.5mm6.3 m/s

ComboPart of 4 combo trips

The 14th International Symposium on Ginseng + Hyrox & 11 RacesOct 25 – Nov 1Jeju Island +11 sports 18th World Stroke Congress (WSC 2026) + 12 RacesOct 17 – Oct 26Seoul +12 sports 18th World Stroke Congress (WSC 2026) | October 21 - 23, 2026 | Seoul, Korea + 12 RacesOct 17 – Oct 26Gangnam District +12 sports 28th Asia-Pacific League of Associations for Rheumatology Congress (APLAR 2026) + Hyrox & 17 RacesOct 25 – Nov 3Seoul +17 sports

Event Details

Elevation

40m

Course

The course runs almost entirely on the dedicated 'Liberty' riverbank cycle path beside the Oi River, with the only real undulation being the short rise onto the embankment near the Kawagoe ruins and the descent back down.