I went to the 24 Heures du Mans in 1964. Thank you, Uncle Sam.
Not a great race by any means, but quite an event. Got to drive my Austin-Healey Sprite at top speed (a screaming 90 MPH) down the Mulsanne straight the evening before the race, while turning a couple laps around that renowned facility, along with many, many other young fools, I mean fans.