https://runsignup.com/Race/CO/Westminster/HardAsNailsObstacleMudRace
The Hard As Nails Obstacle Mud Race is on Sunday May 17, 2015.
mud racehardnailsobstacle
https://runsignup.com/Race/NE/Arlington/Cowboy5KMudObstacleRaceSwampStomp2017
The Cowboy 5K Mud & Obstacle Race - Swamp Stomp 2017 is on Saturday July 29, 2017.
obstacle racecowboymudswampstomp
https://utmb.world/utmb-index/races/8275.hagglakemudrunsun25k.2019
Hagg Lake mud run 2019 - Sun 25K is a UTMB Index race 20K race of 25.00 km and 800 mt+. See the results form 215 Finishers.
hagg lakemud runsunutmbindex
https://www.trtworld.com/article/029b2bf2ddeb?utm_source=b707149d9098&utm_medium=internal&utm_campaign=recommended&utm_content=inline
Dozens are still missing as Indonesian rescuers work through deep mud after a landslide buried homes and left at least 11 people dead.
rescuersracedeepmudlandslide
https://toughmudder.com/
Mar 4, 2026 - Tough Mudder is your best chance to test your teamwork, conquer best-in-class obstacles, and let your inner party animal go wild.
tough mudderobstacle raceusarun
https://www.dailystar.co.uk/news/runners-stuck-mud-race-18043795
Dec 28, 2009 - Scores of people have tried to cover themselves in glory at one of the world's dirtiest sporting events.
get stuckmud racedaily starrunners