For the start of the Olympics, TCM ran several Olympics documentaries. I just finished watching one showing the 1924 Paris Olympics, the games with Paavo Nurmi (who kept checking his watch during his races), Johnny Weissmuller, and Harold Abrahams and Eric Liddel of Chariots of Fire fame.
In a very French, very of-its-time touch, the marathoners took both water and wine breaks.