![(SP)SWEDEN-STOCKHOLM-TOUGH VIKING](136281966_14947462654891n.jpg)
Pariticipants take part in the 8km course Tough Viking competition, studded with grueling obstacles, in Stockholm, capital of Sweden, May 13, 2017. (Xinhua/Rob Schoenbaum)
Pariticipants take part in the 8km course Tough Viking competition, studded with grueling obstacles, in Stockholm, capital of Sweden, May 13, 2017. (Xinhua/Rob Schoenbaum)