Bare Buns Fun RunJuly 28, 2013 - Loon Lake, Washington 1 of 10
No shoes? No Shirt? No Problem! Well, you might want your running shoes, but clothing is optional at this 5K where the age groups range from under five to over 70. Walk or run your butt off in your birthday suit at Kaniksu National Forest, then hang around to enjoy some food, play some volleyball and cool off in the pool.
Krispy Kreme Doughnut RunSeptember 28, 2013 - Virginia Beach, Virginia 2 of 10
This race takes carbo-loading to a whole new level. Participants run 1.5 miles to Krispy Kreme, eat a dozen glazed doughnuts, and then run 1.5 miles back. You can eat and run as an individual, or sign up as a two-person team. Awards will be given for the best costume, most creative team name, the fastest individual runner and the fastest team.
Mud and Chocolate Half MarathonVarious Locations - Multiple Dates 3 of 10
If you're a runner with an insatiable sweet tooth then you will love this race. Run the half marathon with chocolate aid stations along the way, or run the 4.5-mile Trail Run. Both races end at CHOCOMANIA, the chocolate finish line area, filled with decadent treats and a chocolate finisher's medal.
Rugged ManiacVarious Locations - Multiple Dates 4 of 10
Challenge yourself at an extreme obstacle race, and then celebrate your victory with bands and beer. The Rugged Maniac is a 5K with more than 20 obstacles. Put your strength and athleticism to the test. While you wait for your turn to tackle the course hang out with other maniacs, play muddy tug-o-war, ride the mechanical bull, or jump around in the adult bounce house.
The Zombie Mud RunVarious Locations - Multiple Dates 5 of 10
Get ready for a mud run with the added challenge of dodging, outrunning and outsmarting zombies. Runners will be given a flag football belt, holding flags that represent vital organs. Crush the obstacle course and cross the finish line with one or more of your flags and you survive. Can you make it out alive?
Urban DareVarious Locations - Multiple Dates 6 of 10
We dare you to try this challenging event that requires brains and brawn. Run, answer trivia questions, and complete skill challenges. Two-person teams will need to put their heads together to walk, run, or use public transportation to reach checkpoints along the course.
Skirt Sport Skirt Chaser 5KVarious Locations - Multiple Dates 7 of 10
Ladies here's your chance to meet some dashing, athletic boys. The girls gear up in a running skirt and get a three-minute head start before the men's start time. Run as a couple, run with friends, or run solo and meet someone special at the after party. The Skirt Sport Skirt Chaser 5K is a series of races throughout the U.S. and Canada. This summer there will also be a half marathon, 5K and 5-mile race in Colorado.
Alpha WarriorJune 15, 2013 - San Diego, CA 8 of 10
Put your physical and mental strength to the test at this extreme obstacle competition. You wont run any miles, but you will face over 30 obstacles designed by athletes, architects and engineers. Do you have what it takes to be an Alpha Warrior?
Gladiator Rock'n RunVarious Locations - Multiple Dates 9 of 10
Are you rough and tough and ready to rock? Calling all aspiring gladiators for this race that combines running with rock and roll. The Gladiator Rock'n Run has multiple events with distances between 5K and 10K, 17 obstacles, and features a post-race party with food, beer and bands.