This man gave the longest presidential inaugural address in US history.
William Henry Harrison
Frankly Delano Roosevelt
Millard Filmore
John F. Kennedy
William Henry Harrison, who ironically also holds the record for the shortest presidency. His 8,445-word speech required nearly two hours to deliver, which he did while standing in cold, wet weather without hat, coat or gloves. He contracted pneumonia and died 32 days after taking office.