Yamada Green Dome Maebashi (ヤマダグリーンドーム前橋, Yamada Gurīn Dōmu Maebashi) is an arena in Maebashi, Japan. With a capacity of 8,000, it is primarily used for indoor sports. One of its primary functions is as a velodrome - when it is known as Maebashi Velodrome (前橋競輪場, Maebashi Keirinjyō) - holding parimutuel Keirin races throughout the year.

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Yamada Green Dome Maebashi

Maebashi Velodrome
Yamada Green Dome Maebashi Location within Gunma Prefecture Show map of Gunma Prefecture Yamada Green Dome Maebashi Yamada Green Dome Maebashi (Japan) Show map of Japan
Former names	Maebashi Velodrome
Location	Maebashi Gunma Prefecture, Japan
Coordinates	36°23′51.40″N 139°03′28″E
Owner	Maebashi city
Operator	Green Dome Maebashi Foundation
Capacity	12,596 Concert: 20,000 Track and field, Cycling: 7,584
Construction
Opened	May 1990
Main contractors	Shimizu Corporation
Tenants
Gunma Crane Thunders (2012–2016) 1990 UCI Track Cycling World Championships Keirin

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Some of the international sports meets held in the past include the 1990 UCI Track Cycling World Championships and the 1999 IAAF World Indoor Championships. It is the former home arena of the Gunma Crane Thunders of the B.League, Japan's professional basketball league.

The Dome's velodrome oval is 335 meters in circumference. A typical keirin race of 2,035 meters consists of six laps around the course.

Green Dome Maebashi is one of only two indoor locations in Japan that offer professional keirin races - the other venue is Kokura Velodrome at the Kitakyushu Media Dome.

Maebashi's keirin identification number for betting purposes is 22# (22 sharp).

Takasaki-based Yamada Denki purchased the naming rights in 2014,^[1]

• List of cycling tracks and velodromes
• List of indoor arenas in Japan