A former opera singer has completed the coldest marathon on Earth with 38 runners braving -33 degrees Fahrenheit temperatures.

Ted Jackson, 36, a former member of the Royal Philharmonic Orchestra, ran the freezing marathon in nine and a half hours, coming in at 26th place.

Runners from six continents and 13 countries took part in the race, which was won by Russian athlete Evgeniy Gorkov with a time of four hours and 27 minutes, England's the Daily Telegraph reported.

Jackson and other runners wore three layers of bulky clothing to protect themselves from frostbite or hypothermia, and they wore goggles to protect against snowblindness, caused when ultraviolet rays reflect up from the snow.

The race saw teams of doctor specialists checking on the competitors regularly to ensure they're safety and health.

Jackson, who trained at a local butcher's deep freeze, is known for testing himself with feats of endurance. The Telegraph reports he's also completed the New York and London marathons, the London Triathlon and all 21 stages of the Tour de France in 2006, two weeks before the professionals.

The 2009 North Pole Marathon was his second go of the race. Jackson also hopes to run a marathon on every continent, making him a member of the North Pole Grand Slam Club.