Full Moon Marathon, Jordan

Who: 350 runners

When: May 1, 2015

Why it's unique: The Bedouins who live in the Jordan's Wadi Rum have been traversing the desert by night through the ages, so why not run it? The race is staged entirely by the light of moon, over a shape shifting swamp of sand which differs from year to year, but in the past there have been 1,600-feet tall sand dunes to contend with, not to mention biting, dusty winds. [amazingrunningtours.com]