You decided to take on a beast of an event. The unknowns are greater than the certainties. The truth is, doing your first 100 mile ultra marathon is a lot more complex than just getting out there and jogging (and hiking) for hours on end. There are several other aspects to the event that can make or break your ability to cross the finish line. So if you're crazy enough to take on this monster or slowly losing you mind and considering it, join us for our top 10 tips for beginner ultra marathoners. All of these things we've learned from the successes and failures of our athletes over the last 14 years. And if we missed something, post it in the comments!