Running, rucking, hiking, walking, and...crawling? Wood chopping, knot tying, fire-starting, and archery. There were guns and yoga. Sound like fun? The SISU Iron might be for you!

Goliathon XI brought many firsts to the course this year. New rules didn't change the heart of the race, though: proceeds go to bringing fresh water to a village in Malawi.

Memorial Day Mayhem is a local OCR event that takes place at the Black Diamond Obstacle Course in Columbus, OH. Designed by Jason Goggins, the Black Diamond Obstacle Course has been repeatedly nominated for best OCR training facility by the Mud Run Guide “Muddies” awards. The race is enjoyable, affordable, and is an accessible, yet challenging event that proves to hold its own in the OCR community and reminds us of the benefits of racing local.

Warrior Dash is the series that started it all for many OCR athletes. Here’s what happens when an elite racer returns to their Kansas City event.

Frontline OCR was created to honor those that are currently serving and have served our beloved country. Their races also give civilians a chance to have a "Boot Camp" experience of their own.

Spartan debuted a new venue for the Boston Sprint with a flat, fast course and a welcoming, community feel.

Speed is the name of the game at Stadion races. Station Nationals Park's 2.1 mile course is packed with obstacles and a lot of stair to climb, but gives you the chance go all out.