i completed all 13 miles and all 25 obstacles on saturday in tahoe, ca. i am very proud of myself because i thought it was way beyond my physical ability. it really puts perspective on my early morning jog. this was definitely the most challenging thing i have ever done. when the course is completed, you receive this headband and an ice cold beer. *worth it* i don't want to feel like i am bragging so let's make this interactive! what is the most difficult (serious) thing you have ever (or, would like to) accomplish?