More than 20,000 people took part in the 2018 Shanghai City Orienteering Challenge, an urban running activity to promote a healthy lifestyle on Saturday in Shanghai.

Turning the city into a huge playground, the participants aged between 8 and 60, ran across 15 districts, along 37 routes.

The participants were divided into five-member teams and each team had to complete a few tasks and challenges.

It took 4-6 hours for a team to complete all the tasks.

Abbott, a global healthcare company initiated the event in 2016 and sponsored it for the third consecutive year.