The sisters said they are planning to climb the highest summits on each of the seven continents.
The siblings said their grandfather and father were also accomplished climbers.
"Our grandfather and father were climbers. We want to dedicate our Mount Everest summit to our late father, Dorjee Sherpa, who used to be a climbing Sherpa and guide," Dawa Futi Sherpa told Guinness World Records.
"In 1982, he joined a Japanese Expedition to Everest in winter and, there, he lost 8 fingers to frostbite, still he continued climbing with his remaining fingers until 2007," she said.
The sisters said their brother, Mingma Gyalje Sherpa, has climbed Everest six times and helped them prepare for their attempt.
The trio said the next summit on their journey will be Russia's Mount Elbrus.