24 Hours of Adrenalin is a mountain bike event series in North America.
24 Hours of Adrenalin claims the title of "fastest growing mountain bike event series in North America".
The race generally favors speed over technical skill and begins with a 600-metre Le Mans start to retrieve bikes.
[1] The race takes place annually in various cities including: In 2010 the 12th annual World Solo 24 Hour MTB Championships was held outside of North America for the first time, at Mount Stromlo, Canberra, Australia.
[2] It appears 24 Hours of Adrenalin went out of business after their last 2017 event with venue fees at Canmore Nordic Centre being blamed as the cause.