Tim Hewitt is the name I chant under my breath during my worst winter runs. He's a 59-year-old lawyer from Pennsylvania who, for eight years straight, has run the Iditarod Invitational. The Iditarod Invitational is a lovely 2500 mile, month-long fun-run through Alaska's winter wonderland, alongside the sled dog teams recreating the famous 1925 trek from Willow, AK to Nome.
Tim says he can tell when it's -20F, because that's when his eyebrows freeze. He used to utilize village checkpoints for supply drops, like most participants and sled teams, but now he drags all his food and supplies in a fifty-pound sled behind him, because WHY NOT? He also once finished the last 500 miles of the race on a broken leg. I deeply admire that level of crazypants. He's written a book on his experiences, which you can purchase here.