I have done a few different 24 hour events over the years - 24 Hours in The Old Pueblo (4x), 24 hr of Adrenaline events (3x), 24 Hrs of Fury (2x).
I have to say that the 24 Hours in the Old Pueblo
is my favorite with the 24 Hrs of Fury
a close 2nd.
What are your favorite 24 hr events?