Lakpa Sherpa, 44, the world's most successful female Everest climber, also made her ninth climb to the top of the mountain on Wednesday - breaking her own record set a year ago.
Ani Lhakpa Sherpa summited from the North and the 44-year-old has now set a new female record, beating the record she set a year ago.
Trekkers rest at Everest Base Camp, Nepal.
Most hopefuls are escorted by a Nepali guide, meaning about 700 climbers will tread the same path to the top of the 8,850-metre (29,035-foot) peak in the coming weeks.
Mountaineering runs in his family.
He has already climbed most of the peaks above 8,000 meters including K2 and Annapurna, among others.
Kami made his first ascent of Everest in 1994 when he was 24.
A Sherpa guide has been missing on Everest's southern side in Nepal since Monday, said Mingma of Seven Summits.
"This has paved the way for other climbers to reach the summit as well".
"I did not start climbing to set a world record", he told AFP last month before setting out for the mountain.
Apa, a 58-year-old guide who uses only one name, retired in 2011 and moved to Utah.
Lhakpa, who lives with her daughters in Hartford has climbed Everest at 6 am from the North Col (Tibet Side) with a few climbers from her team. She lives most of the year in the USA state of CT and has a son and two daughters.
Although Sherpa was scheduled to climb the world's tallest peak on Thursday, he achieved the feat a day before, surprising all his mountaineering colleagues and officials.
Summits are underway every day since May 13 after the eight rope-fixing team members opened the climbing route for all climbers. More than 340 foreign climbers along with several of their local guides are attempting to climb Everest this month.