The Rainforest Challenge (RFC) - Vietnam Challenge-Ha Long 2013 kicked off in Tuan Chau Resort, Ha Long city, northern Quang Ninh province on June 1.

As the biggest ever offroad motor race in Vietnam, the competition has drawn the participation of up to 40 teams from domestic and foreign clubs, an increase of 19 teams against last year.

The competition will include 18 adventures of all terrains, notably a jungle trial.

As part of the Rainforest Challenge series, taking place worldwide, with the key event hosted by Malaysia every December, the RFC Vietnam Challenge-Ha Long 2013 will run until June 5.-VNA