Link, center, is helped up the Mini Mudderhorn with assistance from their owner, Kevin Ballard, during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Murphy relaxes at the Mud Mile during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
A Tough Mudder participant tries to complete the obstacle course during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Marissa Macri leads her dog, Penny, through the Mud Mile during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Young passersby watch as Murphy, bottom center, sits at the Mud Mile during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Matt Caldwell, top center, and Blakeney Jones, top right, watch as their dogs, Levit and Summit, run through the Mud Mile during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Mariah Hester and her dog, Louie, prepare to enter the obstacle course during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Volunteer Amy Huggins, center, holds Cider, center, during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Amanda Dawn, center-left, helps Mariah Hood, top-center, push Hood's dog, Bierney, up Mini Everest during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Katniss is given a drink of water by her owner, Natalie, during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Owners clean their dogs as Tough Mudder participants rinse during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Sherif Elkhatib receives a kiss from his dog, Malcolm, during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Ty receives a washing from his owner during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
Jasmin Geary needs her dog, Casper, a drink of water during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
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Link, center, is helped up the Mini Mudderhorn with assistance from their owner, Kevin Ballard, during the Ruff Mudder held at Sterling Ranch on August 10, 2019 in Littleton, Colorado. (Timothy Nwachukwu, Special to the Denver Post)
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Getting your player ready...
Canines ran through a “mud mile”, climbed a four-foot “Mini Everest” feature, jumped over muddy two-foot-high walls and navigate other features at the Chewy’s Ruff Mudder event held at Sterling Ranch on Aug. 10 in Littleton.
