2018 X-Mudder Run and Obstacle Race has been held at the Olympic Forest Park in Beijing on Saturday. Like marathons, mud runs are slowly gaining popularity in China. People participate more for fun than for the actual competition. [Photo:IC]

2018 X-Mudder Run and Obstacle Race has been held at the Olympic Forest Park in Beijing on Saturday. Like marathons, mud runs are slowly gaining popularity in China. People participate more for fun than for the actual competition. [Photo:IC]

2018 X-Mudder Run and Obstacle Race has been held at the Olympic Forest Park in Beijing on Saturday. Like marathons, mud runs are slowly gaining popularity in China. People participate more for fun than for the actual competition. [Photo:IC]

2018 X-Mudder Run and Obstacle Race has been held at the Olympic Forest Park in Beijing on Saturday. Like marathons, mud runs are slowly gaining popularity in China. People participate more for fun than for the actual competition. [Photo:IC]