
It is human nature to test the limits and with the close of the Winter X Games last month and the start of the Iditarod next month, Cheapflights' experts have compiled a list of the most extreme sporting events in honor of the thrill-seeking, adrenaline-pumping daredevils who push the limits every day.
-- Meagan Delury
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http://extreme.com/mountainbike/1017618/uci-mtb-dhi-world-championships-2011-danny-harts-run