Astronaut Sunita Williams became the first person to finish a triathlon in space.   Sunita Williams completed the task by using specialised equipment aboard the International Space Station.

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She timed the event to coincide with the Nautica Malibu Triathlon held in Southern California.

Williams is the commander of Expedition 33 on the ISS, about 240 miles above the Earth.

She used a stationary bike, a treadmill and a “strength training machine” tuned to a weightless environment to simulate the triathlon. The training machine was used in lieu of swimming, which is not possible in zero gravity.

In total she ‘swam’ half a mile, cycled 18 miles and ran four miles.

“I’m happy to be done,” she said after the race. “It wasn’t easy, and I’m sure everybody in California’s very happy to be done too.”

[huffingtonpost]