My little marathon consisted of Jack Benny, Amos and Andy, Mel Blanke, Abbott and Costello, Archie Andrews, Fibber McGee and Molly; The Great Gildersleve; Phil Harris, and 52 other radio shows from 1940 to 1950.
My next personal marathon will be New Years. It won't be as long ... just 39 programs or 19 and a half hours.