The is a Japanese

thoroughbred horse race Thoroughbred racing is a sport and industry involving the racing of Thoroughbred horses. It is governed by different national bodies. There are two forms of the sport – flat racing and jump racing, the latter known as National Hunt racing in ...

on dirt track only for three years old. It is graded as a Domestic Grade I. It is run over a distance of 1,800 meters (about 9 furlongs) at Oi Racecourse in

Shinagawa, Tokyo is a special ward in Tokyo, Japan. The Ward refers to itself as Shinagawa City in English. The Ward is home to ten embassies. , the Ward had an estimated population of 380,293 and a population density of 16,510 persons per km2. The total are ...

in April or May.

History

It began in 1955 as the ''Oi Hai''. Its name was changed to ''Haneda Hai'' in commemoration of Haneda racecourse which used to be situated next to Shinagawa. Its distance has been changed several times. It has been run as follows: * from its inception until 1966 at 1800 meters * from 1967 to 1995 at 2000 meters * from 1996 to 1998 at 1800 meters * from 1999 to 2001 at 1600 meters * from 2002 to 2003 at 1790 meters * from 2004 onwards at 1800 meters Until 2023, this race was the first leg of the South Kanto (Minami-Kanto) triple crown with

Tokyo Derby The Tokyo Derby (東京ダービー) is a Japanese thoroughbred horse race on dirt for three-year-olds. It is run over a distance of 2000 meters (about 10 furlongs) at Oi Racecourse in the Shinagawa, Tokyo Tokyo (; ja, 東京, , ), o ...

and

Japan Dirt Derby The is a Japanese Domestic Grade 1 flat horse race in Japan for three-year-old thoroughbred colts and fillies run over a distance of 2,000 metres (approximately 1 mile 2 furlongs) at the Oi Racecourse, Shinagawa, Tokyo in late July. It was ...

and only horses belonging to Minami-Kanto Horseracing can run.

Dirt Grade Promotion

Starting from 2024, this race will be graded as Domestic Grade 1 (Jpn1) along with

. Formerly the first leg of the South Kanto (Minami-Kanto) Triple Crown, it will become the first leg of new Japanese

Triple Crown Triple Crown may refer to: Sports Horse racing * Triple Crown of Thoroughbred Racing * Triple Crown of Thoroughbred Racing (United States) ** Triple Crown Trophy ** Triple Crown Productions * Canadian Triple Crown of Thoroughbred Racing * Trip ...

of Dirt. Entries will be expanded to 16 horses with 4 JRA horses and 12 NAR horses.

Winners since 2004

References

*Netkeiba: **, , , , , , , , , **, , , Flat horse races for three-year-olds Horse races in Japan {{horseracing-race-stub