| Opened | May 20, 1891 |
| Last Race Date | Still in Operation |
| Racing Type | Thoroughbred |
| Abbreviation | Haw |
| Purse Value Index | 37 |
| Signature Race | Hawthorne Gold Cup (G II) |
- 05/20/1891 Opens for racing.
- 05/30/1902 Grandstand burns down the first time.
- 01/01/1905 Racing is banned in Chicago.
- 09/30/1922 Racing returns for good after several failed attempts.
- 07/02/1925 Pari-mutual wagering is introduced at Hawthorne Race Course.
- 00/00/1931 Hawthorne is first American race track to use electronic timer.
- 00/00/1948 Six furlong turf course makes debut at Hawthorne.
- 10/15/1960 Kelso with Eddie Arcaro capture the Hawthorne Gold Cup.
- 00/00/1970 Harness racing is run for the first time. Meet called Suburban Downs.
- 05/08/1976 Quarter horses run for the first time at a Chicago track.
- 11/19/1978 The grandstand area is devistated by an early morning blaze.
- 09/29/1980 A rebuilt Hawthorne Race Course returns for racing.
- 08/05/1985 Remainder of Arlington dates transfered to Hawthorne after Arlington fire.
- 11/09/1987 The newly expanded seven furlong turf course is unvailed.
- 00/00/1991 Hawthorne Race Course celebrates 100 years of operation.
- 01/01/2008 Hawthorne becomes the first Chicago track to run in January.