Like a lot of things in Alaska, the annual Mount Marathon Race in Seward is famously brutal, even dangerous. Which is precisely why Michael LeMaitre ran it—the last day he was seen alive.

...Mountain rescue experts, firemen, state troopers, search dogs, helicopter pilots, volunteers, and LeMaitre’s family spent thousands of hours scouring the mountain for him. They have yet to find even a single clue to his fate.

...1.5 miles up. Roughly 1.6 miles down. Hundreds of runners within view of thousands of fans, and a man simply vanished. How the hell is that even possible?

It is as if..."The mountain swallowed this man."

From 2013, with 2016 update.