The event which began in 1990 has been running regularly since 1995.
This year it was held in Trondheim in Norway on May 15.
It is the third time Mr Weisser has emerged as champion.
Photograph: Jonathan Nackstrand/AFP/Getty Images
The event which began in 1990 has been running regularly since 1995.
This year it was held in Trondheim in Norway on May 15.
It is the third time Mr Weisser has emerged as champion.
Photograph: Jonathan Nackstrand/AFP/Getty Images
