Participants take part in a mini-marathon in Baotou, Inner Mongolia autonomous region on Sept 24, 2016. More than 3,000 runners from across China took part in the mini-marathon, which is the first stage in a four-month-long marathon that will be divided into 30 races, each held in a different Chinese city. The series is organized by the World Online Running Alliance (WORA), an Alibaba initiative that seeks to combine information technology with traditional running activities. [Photo/Xinhua]