I already signed up to do the Citi field race on may 9th. It's a spartan sprint race so it's 3-5 miles with 15 or more obstacles.

http://www.spartan.com/events/?event_id=420%2Fciti-field-sprint-%28stadium%29#.VCrmLXn-Ls4.facebook

Just goggle spartan race and you can sift through a ton of races in your area.

There is a spartan super race coming up later in 2015 that will either be in new jersey or long island that will be at least 10 miles and 20 obstacles or more. They haven't announced that race yet but when they do I will be signing up for that as well.

I haven't been this motivated to get in shape in my life. I've had ups and downs as far as my physical fitness. I've completed 5ks, half marathons and did the urbanathalon before. I feel the need to do more than just complete a race. I'm trying to finish in the top percentage for my age group at the very least.

Anybody wit it?

Haven't don't a Spartan race yet, but I have done the Warrior Dash and doing Tough Mudder on the 25th of October as well as a bunch of other smaller mud/obstacle races. This are really fun, especially with friends, and recommend everyone do it.

What are you doing to train for it?

If I can go back and do things differently, I would have ran more. The Tough Mudder was 10.2 Miles and by mile 8, my right calf was cramping bad. By the time I crossed the finish line, my quads were shot (still a bit sore).
I still think you should focus on more crossfit/circuit course routine. More Burpess, pull-ups and core work and less bench press and bicep curls. I would also incorporate more olympic lifting and, of course, long distance running. Muscle endurance is everything!

Definitely invest in a good trail running shoe. I'm sure once you knock this one out, you'll catch the "mud run" bug and do more so don't be cheap. Protect your feet!!

Also...make sure to bring an extra set of clothe, shoes and towels. It will get messy.

I recommend working on your cardio, more powerlifting (power cleans, squats and presses) and learn how to rope climb.