13th Toyosu Seaside Marathon & Relay (第13回 豊洲のうみべマラソン&リレー)

Japan flag Koto, Tokyo, Japan

15 days left

13th Toyosu Seaside Marathon & Relay (第13回 豊洲のうみべマラソン&リレー) runnet.jp
Date 28 Nov, 2026
Races 7 distances
Entry fee $11.38 – $33.37
Runner rating Be the first to rate
13th Toyosu Seaside Marathon & Relay (第13回 豊洲のうみべマラソン&リレー)

About the event

Set in a park jutting out into Tokyo Bay, surrounded by water on all sides, this is a flat running course with no elevation change. There are also plenty of shopping centers and entertainment facilities near the park, so you can enjoy sightseeing and shopping in the area after the race too. Come make the most of a sporty autumn day! Entry fees: Half Marathon ¥5,280, Relay Marathon (per person) ¥3,600, 10km ¥4,880, 5km ¥4,680, Mini Marathon ¥3,980, Parent-Child Pair Marathon (1 pair) ¥3,980, Challenge Run ¥1,800

Races offered

28Nov

10km

Running

Distance
10K
Countdown
15 days
Entry fee
$30.84
28Nov

5km

Running

Distance
5K
Countdown
15 days
Entry fee
$29.58
28Nov

Challenge Run (400m)

Running

Distance
0.4K
Countdown
15 days
Entry fee
$11.38
28Nov

Half Marathon (21.0975km)

Running

Distance
21.1K
Countdown
15 days
Entry fee
$33.37
28Nov

Mini Marathon (2.5km)

Running

Distance
2.5K
Countdown
15 days
Entry fee
$25.15
28Nov

Parent-Child Pair Marathon (2.5km)

Running

Distance
2.5K
Countdown
15 days
Entry fee
$25.15
28Nov

Relay Marathon (21km)

Running

Distance
21K
Countdown
15 days
Entry fee
$22.75

Weather history

3-year monthly averages for November in Koto.

Temperature9.1° / 17.1°
Feels like5.8° / 15.3°
Sunshine hours7h 14m
Rainfall2.6 mm
Snowfall—
Wind10.9 km/h (Light breeze)
Humidity72.9%
Max UV indexLow (2.0)
Sweat lossLow
Course conditionsFirm and slightly soft
Sunrise06:16
Sunset16:34

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