| Ohi Racecourse 大井競馬場 | |
| Location: | Shinagawa, Tokyo, Japan |
| Owner: | Tokyo Keiba Inc. |
| Opened: | 1950 |
| Coursetype: | Flat |
| Website: | http://www.tokyocitykeiba.com/ |
| Notableraces: | Tokyo Daishoten Teio Sho Japan Dirt Derby |
, also known as Tokyo City Keiba (TCK), is located in Shinagawa, Tokyo, Japan. Built in 1950 for horse racing, on weekends it also hosts one of the largest Tokyo-area flea markets. http://www.trx.jp/en/guide_2.php?pid=1&std=1
The racecourse is located near Ōi Keibajō Mae Station on the Tokyo Monorail.
The Tokyo City Cup held annually at Santa Anita Park in Arcadia, California honors the partnership between the American racetrack and Ohi Racecourse. In recognition of their relationship, TCK holds "Santa Anita Week" each summer which features the one mile G3 "Santa Anita Trophy".
| Month | Race | Distance | Age/Sex | |
|---|---|---|---|---|
| Grade I (International) | ||||
| December | Tokyo Daishōten | 2000m | 3yo + | |
| Jpn Grade I | ||||
| April | Haneda Hai | 1800m | 3yo | |
| June | Tokyo Derby | 2000m | 3yo | |
| June | Teio Sho | 2000m | 4yo + | |
| October | Japan Dirt Derby | 2000m | 3yo | |
| Jpn Grade II | ||||
| March | Keihin Hai | 1700m | 3yo | |
| October | Ladies' Prelude | 1800m | 3yo f/m + | |
| October | Tōkyo Hai | 1200m | 3yo + | |
| Jpn Grade III | ||||
| February | Kumotori Sho | 1800m | 3yo | |
| April | Tokyo Sprint | 1200m | 4yo + | |
| SI (South Kanto) | ||||
| May | Tokyo Princess Sho | 1800m | 3yo f | |
| October | Haiseiko Kinen | 1600m | 2yo | |
| December | Tokyo Nisai Yūshun Himba | 1600m | 2yo f | |
| SII (South Kanto) | ||||
| February | Kinpai | 2600m | 4yo + | |
| June | Yūshun Sprint | 1200m | 3yo | |
| September | Tokyo Kinen | 2400m | 3yo + | |
| November | Mile Grand Prix | 1600m | 3yo + | |
| December | Katsushima Okan | 1800m | 3yo + | |
| SIII (South Kanto) | ||||
| March | Fujino Wave Kinen | 1400m | 4yo + | |
| April | Brilliant Cup | 1800m | 4yo + | |
| August | Santa Anita Trophy | 1600m | 3yo + | |
| August | Kuroshio Hai | 1800m | 3yo | |
| September | After 5 Star Sho | 1200m | 3yo + | |
| September | Gold Junior | 1400m | 2yo | |
| December | Gemstone Sho | 1200m | 2yo | |
| December | Tokyo Cinderella Mile | 1600m | 3yo f/m + | |
Source：TCK Record
| Distance | Time | Racehorse | Sex | Weight | Jockey | Date Recorded | |
|---|---|---|---|---|---|---|---|
| 1000m | 57.7 | Noah Vigorous | Mare 5 | 51kg | Genki Fujimoto | June 29, 2023 | |
| 1200m | 1:10.0 | Don Frankie | Horse 4 | 56kg | Kenichi Ikezoe | October 4, 2023 | |
| 1400m | 1:23.0 | Agari Speed | Colt 3 | 53kg | Kiyomatsu Akama | August 30, 1977 | |
| Inner 1500m | 1:31.5 | Kikumatsu O | Mare 4 | 53kg | Takemi Sasaki | June 14, 1980 | |
| Inner 1600m | 1:37.2 | Adjudi Mitsuo | Horse 5 | 57kg | Hiroyuki Uchida | April 12, 2006 | |
| Left 1650m | 1:42.3 | Sabuno Hakutaka | Horse 5 | 57kg | Tsubasa Sasagawa | September 22, 2023 | |
| 1700m | 1:43.2 | Mutsu Hikari | Horse 5 | 52kg | Motohiro Akamine | July 12, 1977 | |
| 1800m | 1:49.6 | Miracle Legend | Mare 4 | 55kg | Yasunari Iwata | November 3, 2011 | |
| 2000m | 2:00.4 | Smart Falcon | Horse 5 | 57kg | Yutaka Take | December 29, 2010 | |
| 2400m | 2:29.7 | Good Boy | Colt 3 | 57kg | Saburō Takahashi | November 4, 1977 | |
| 2600m | 2:42.8 | Agnes Chikara | Horse 5 | 55kg | Tsuneo Takayanagi | May 27, 1977 |