Team City Challenge sports event attracts more than 900 participants this Saturday. The most entertaining summer event takes place in Tampere, Finland.

Team City Challenge is a city adventure race, in which teams visit different checkpoints and perform exciting challenges.

This year ActionTrack platform is used in the event for the first time. With ActionTrack, teams can get guidance to the checkpoints, take part in photo challenges as well as special challenges.

Learn more about Team City Challenge here: http://teamcitychallenge.com/