Participants take part in the "2016 Mud Hero Toronto North" race at Albion Hills Conservation Area in Toronto, Canada, Aug. 27, 2016. (Xinhua/Zou Zheng)
Participants take part in the "2016 Mud Hero Toronto North" race at Albion Hills Conservation Area in Toronto, Canada, Aug. 27, 2016. (Xinhua/Zou Zheng)