Running a marathon, as far as I can tell, is basically impossible. The whole sport only exists because the first guy who did it died from doing it. Yet, for some, a warm 26-mile jaunt across New York City just isn’t brutal enough. So they invented the Antarctic Ice Marathon. While most marathons encourage competitors with massive cheering crowds and local news cameras, there is one that decided to forego the adulation and smog for subzero temperatures and 24 hours of daylight. Enjoy this video of the marathon, which took place over the weekend, and the smiling faces of the crazy people who just ran a deadly event in -13 degrees Fahrenheit.