Pros? Heck no!! This run is such a blast!! I have run this for the last 5 years with a group of friends. Some people walk and jog it. You only do what you can do. There are hills and obstacles and even wading thru a lake at one point. Prepare to get wet, muddy and very dirty. It is not too hard. Just go at your own pace. There are all sorts who run this race- from the youthfull to the elderly. Some people even get outfitted in costumes!!! If you have a group that you will run with it is a lot of fun to all wear matching shirts or outfits. You will have a good time!

Oh, I am sorry. I thought you meant the Mud Run at Camp Pendelton. (Your subject title was cut off and I misunderstood). I have never done the Duathon. The Mud Run is only a 6K and I am sure that it is nothing like what you are asking about. Good luck!