How to Train for Obstacles

I didn't know how to train for something like this. So I was just like, well, we go to the CrossFit gym every day. That should just be enough. And I didn't train in the running part at all. Because all we really did was our workout of the days at the gym. We started a wave at like 10 o'clock. By the time we got through it, it was like midnight. It took that long. Anybody who's done the Tough Mudder, they're scared of there's one obstacle that scares everybody. The Arctic Anima is my number one. My number two was the, it's the very last one and it's the