| Opened | August 23, 1936 |
| Last Race Date | August 24, 1991 |
| Racing Type | Thoroughbred |
| Abbreviation | MF |
| Purse Value Index | 3 |
| Signature Race | Unknown |
- 08/23/1936 First thoroughbred race run at Marshfield Fair.
- 08/21/1982 A crowd of 10,104 set attendance record at the fairgrounds.
- 08/24/1991 Ironically, the record handle of $756,554 is set on last day ever.
- 08/24/1991 China Anchor, last horse to have picture taken at Marshfield Fair.