There’s only one way out.
If you don’t like small spaces, you’re really gonna have to suck it up for this obstacle. Crawl through a series of pipes that force you downhill through muddy water, then up a slippery climb to the other side. Don’t lose your sh*t. There really is light at the end of the tunnel.
Boa Constrictor's tight crawlspace has been testing the mental grit of claustrophobic Mudders since 2010. Originally a long tube flat on the ground covered in gravel, subsequent iterations included elements of wood, ice pits, and a flap to keep the exit dark. The current version (since 2011) is a downward slither into a cold water pit with a barbed wire ceiling, and a tortuously slow crawl vertically out of a second. Caution: the bigger and stronger you are, the better your chance at getting stuck.
Give your core a workout so you’re prepared for the crawl that lies ahead.
Plank Holds (with elbows touching the floor): 20 seconds on, 10 seconds off. Do 8 rounds.
Calf raises (standing with your toes on a step): 10x on both feet, 10x on each foot, 10x on both feet)
Bent Arm Pull-Up Hang (bring your chin over the bar): 15 seconds each. Do 4 rounds.
Tough Mudder Tips
Make like a snake.
Use your abs to squeeze your way through the dark tunnels and use your arms to pull you uphill. Don’t forget to use your feet. When you’re through, turn around and help pull out the Mudder behind you