Tobias Frenz is an open water swimmer who finished third overall in the 15 km Cold Half marathon swim in Hong Kong on 23 February 2013 and competed in the first Cold Standard in Hong Kong in an attempt to join the Sub 3 Squared Marathon Club.
 2014 Cold Standard
The Cold Standard is an extreme biathlon (swim-run) competition held in Hong Kong. It is combination of the 15 km Cold Half marathon swim held around Hong Kong Island and the 42 km Standard Chartered running marathon, a 42 km run held on 15-16 February. The Cold Half and the Standard Chartered marathon are held on the same weekend in February. The athletes place according to their cumulative time.
- Swimming The Cold Half In A Warm Place
- It's Cold In Hong Kong
- Railroading Along The Wall, Rough Water At Its Best
- Cold Half To Become The Cold Standard
- World Open Water Swimming Association
- Doubling Up In Hong Kong
- Sub-3 Marathon Club ... On Land And In The Water
- Run A Sub-3 Marathon + Swim A Sub-3 Marathon
- 4 To Attempt To Join Sub-3 Marathon Club
- Sub 3 Squared Club Remains Virgin Territory
- Alex Beaulne Wins Cold Half Amid Winds And Waves
- Ned Denison Is Wowing Locals In Cold Half
- No One Has Ever Done It…Yet