What is the minimum length and width for a Formula 1 track?

APPENDIX O TO THE INTERNATIONAL SPORTING CODE

- Minimum circuit length for F1 is 3.5km.

- It is recommended that the length of any new circuit should not exceed 7 km.

- The maximum permitted length for straight sections of track is 2km.

- When planning new permanent circuits, the track width foreseen should be at least 12 m.

- The width of the starting grid should be at least 15 m; this width must be maintained through to the exit of the first corner (as indicated by the racing line).