Bull became the youngest Australian to climb
Ama Dablam in the
Himalayas, doing so at the age of 23. During his career, he has also been the first to ascend many unclimbed peaks. Between 2006 and 2017, Bull climbed the
highest mountains and
volcanoes on each of the seven continents. He was 36 years old when he completed the challenge. He was also the first Australian to accomplish the feat. In 2017, Bull completed back-to-back climbs of both the highest mountain and highest volcano in Antarctica, becoming the first Australian to ascend
Mount Sidley. In 2018, he set another world record for the highest altitude kayaking, completing the feat on a lake in
Ojos del Salado. ==World records==