The following is an overview of the events of 2004 in motorsport including the major racing events, motorsport venues that were opened and closed during a year, championships and non-championship events that were established and disestablished in a year, and births and deaths of racing drivers and other motorsport people.
The calendar includes only annual major non-championship events or annual events that had significance separate from the championship. For the dates of the championship events see related season articles.
| Date | Event | Ref |
|---|---|---|
| 1–18 January | 26th Dakar Rally | [1] |
| 31 January-1 February | 42nd 24 Hours of Daytona | [2] |
| 15 February | 46th Daytona 500 | [3] |
| 23 May | 62nd Monaco Grand Prix | [4] |
| 30 May | 88th Indianapolis 500 | [5] |
| 29 May-11 June | 86th Isle of Man TT | [6] |
| 12–13 June | 72nd 24 Hours of Le Mans | [7] |
| 12–13 June | 32nd 24 Hours of Nurburgring | [8] |
| 25 July | 27th Suzuka 8 Hours | [9] |
| 31 July-1 August | 56th 24 Hours of Spa | [10] |
| 8 August | 14th Masters of Formula 3 | [11] |
| 10 October | 46th Bob Jane T-Marts 1000 | [12] |
| 21 November | 51st Macau Grand Prix | [13] |
| 4 December | 17th Race of Champions | [14] |
| First race | Championship | Ref |
|---|---|---|
| 11 September | International Formula 3000 Championship | [15] |
| Date | Month | Name | Age | Nationality | Occupation | Note | Ref |
|---|---|---|---|---|---|---|---|
| 5 | July | Rodger Ward | 83 | American | Racing driver | Winner of the Indianapolis 500 (1959, 1962) | [16] |
