With an elevation difference of 2 m or less, the Arakawa riverbank course is promoted as the fastest in Japan, and this JAAF-certified race is run over 10 km laps starting and finishing at Toda Bridge Athletics Stadium. The program covers the full marathon (11,000 yen), half marathon and 30K (7,700 yen each), 10K (5,500 yen), and 5K and 1 mile (3,300 yen each). Twelve pacer groups run from 2:30 to 4:20 at marathon pace, water is offered every 3 to 4 km, and food once every 10 km. The line-up begins five minutes before the start, so runners can keep warming up. The race is part of the R.LEAGUE series, which gives registered runners 10% off from their second start, and is a partner event of TEAM ONE TOKYO, a route to Tokyo Marathon entry. Registration is from 8:00 to 9:00, the marathon, half, 30K, 10K and 5K start at 9:30 and the 1 mile at 9:35. Entries close one week before the race. The nearest station is Nishidai on the Toei Mita Line, a 12-minute walk.
Races Offered
1 Mile
Dec 06, 2026
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Distance —
1.6K
terrain
Type —
Running
timer
56 days remaining
sell
$21.29
10km
Dec 06, 2026
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Distance —
10K
terrain
Type —
Running
timer
56 days remaining
sell
$35.48
30km
Dec 06, 2026
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Distance —
30K
terrain
Type —
Running
timer
56 days remaining
sell
$49.66
5km
Dec 06, 2026
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Distance —
5K
terrain
Type —
Running
timer
56 days remaining
sell
$21.29
Full Marathon
Dec 06, 2026
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Distance —
42.2K
terrain
Type —
Running
timer
56 days remaining
sell
$70.95
Half Marathon
Dec 06, 2026
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Distance —
21.1K
terrain
Type —
Running
timer
56 days remaining
sell
$49.66
[R.LEAGUE Registered] 1 Mile
Dec 06, 2026
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Distance —
1.6K
terrain
Type —
Running
timer
56 days remaining
sell
$19.35
[R.LEAGUE Registered] 10km
Dec 06, 2026
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Distance —
10K
terrain
Type —
Running
timer
56 days remaining
sell
$32.25
[R.LEAGUE Registered] 30km
Dec 06, 2026
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Distance —
30K
terrain
Type —
Running
timer
56 days remaining
sell
$45.15
[R.LEAGUE Registered] 5km
Dec 06, 2026
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Distance —
5K
terrain
Type —
Running
timer
56 days remaining
sell
$19.35
[R.LEAGUE Registered] Full Marathon
Dec 06, 2026
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Distance —
42.2K
terrain
Type —
Running
timer
56 days remaining
sell
$64.50
[R.LEAGUE Registered] Half Marathon
Dec 06, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
56 days remaining
sell
$45.15
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Event name — (Tokyo Arakawa) THE CHALLENGE RACE 43 - JAAF-Certified Race (【東京荒川】THE CHALLENGE RACE 43｜日本陸連公認レース).
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