...in flip flops.
Keith Levasseur ran Saturday's Baltimore Marathon in 2:46:58 while wearing flip flops. Levasseur will file paperwork with the Guinness Book of World Records to have the feat acknowledged as a world record for a marathon in flip flops.
http://www.thepostgame.com/blog/pulse/201210/man-runs-246-marathon-flip-flops-runners-world
