Fitness buffs brave tunnel challenge

Participants going through one of the obstacles during the challenge.

An impressive 7,000 Viper Challenge participants achieved yet another milestone when they conquered the world’s longest multi-purpose tunnel — Stormwater Management and Road Tunnel (SMART) — in the Viper Tunnel Challenge.

Being the second Viper Challenge of the 2018 series, the Viper Tunnel Challenge was a whole new experience for the participants as they completed all 10 trademark Viper Challenge obstacles covering a distance of 8.4km.