Tough Mudder?

So here's the deal...

One of my goals for this year was to run a Warrior Dash (5K) this summer. I do a lot of boot camps and aerobics classes and am in fairly good shape, but I am NOT a runner. I planned to start a C25K program sometime in the spring and prep for it. The idea being that with the obstacles it might be a bit more thrilling to me than just running. (sorry... nothing against you that love to run! I admire you!)

NOW I have friends trying to get me to run a Tough Mudder (10K) in April. It's less of a race, more of a teamwork thing... but I am just not sure I could get ready for it in time? Has anyone done this? Is it more running or walking? Could I do this?