If you can do that you should sign up for GoRuck's runs. Google "Go Ruck Challenge."
Izzy, I am signed up for goruck Phoenix in a couple months. Next weekend, (of 12/3) I am flying to Glen Rose Texas to participate in the Super Spartan race. Its an 8 mile obstacle course that normally has about 16 obstacles. This one will have over 2x that, something special they cooked up for the last race of the year.
Furthermore, I am part of a very, very few people that have signed up to run the course 3x over 24 hours, called the Spartan marathon. First is the hurricane heat Friday night, then a normal heat Saturday morning, and then the final run through is being hosted by goruck, so who knows how long we will be out there and what we will be doing. There might be 30 people out of 5,000 attempting to complete each unique run through.