A 29-year-old Nepalese woman has been recognized by Guinness World Records as the first woman to climb Mount Everest twice in a climbing season, mountaineering officials in Nepal confirmed Tuesday.

"Chhurim Sherpa climbed the mountain twice last May in eight days. No other woman has climbed the mountain twice in the same climbing season, let alone in eight days," said Ang Tshering Sherpa, chairman of Katmandu's Asian Trekking, who was among officials who handed over the certificate to Chhurim.

She set foot atop the 8,848-meter mountain on May 12 and May 19 last year.

"It was tough, especially because I am a woman. There are no toilets up there," Chhurim said Tuesday.

Chhurim, from Ghunsa village in the Taplejung district of eastern Nepal, started her career in mountaineering in 2010. Her ascents of Everest last year were her first and second successful attempts of the mountain.

"Before climbing Mount Everest last May, I had only climbed smaller mountains," she said.

Chhurim rested for two days at base camp after the May 12 summit success and then climbed the mountain again.