1866 AAC Championships

The 1866 AAC Championships was an outdoor track and field competition organised by the Amateur Athletic Club (AAC). The championships were held on 23 March 1866, in the grounds of Thomas Jones, 7th Viscount Ranelagh's Beaufort House.

Summary

 * A cup was presented to each winner and a medal was awarded to second place. Paid admission was required.
 * The athletes consisted primarily of University students.
 * Richard Garnett set a world record of 21:41.0 in the 4 miles race and also set a world record at the 3 miles intermediate of 16:27.0.
 * John H. S. Roupell and J. C. Little set a world record when both jumped 1.753m in the high jump event.