In 2014, Leonard finished 2nd at the 250 km Kalahari Augrabies Extreme Marathon in 23 hours and 28 minutes.In 2015, Leonard finished 3rd at the 220 km Cambodia – The Ancient Khmer Path in 29 hours and 35 minutes.In 2016, Leonard finished 2nd at the Gobi Desert 250 km race in 29 hours and 32 minutes.In 2017, Leonard won the 250 km Kalahari Augrabies Extreme Marathon in 26 hours and 22 minutes.In 2018, Leonard completed the Triple Crown of 200-mile races, finishing the series in 2nd place overall in 220:10:44.Leonard also became the first male in a single year to complete the Grand Slam of Ultrarunning and the Leadville Leadman series which includes Leadville Trail 100, Leadville Trail 100 MTB, Silver Rush Trail Run 50 miles, Leadville Marathon and Leadville 10 km.

In 2019, Leonard won the inaugural Delirious West 200-mile race in a time of 61 hours and 24 minutes.

In 2021, Leonard finished 6th in what is regarded as the 'World's Toughest Race' the Badwater Ultramarathon in 30 hours and 12 seconds.

Leonard has not only competed in but completed some of the world's toughest ultra running races across the most inhospitable landscapes. started running in 2013 and has already achieved numerous top 10 finishes (including wins) in ultra races around the world in the most extreme conditions. Leonard who grew up in Warwick, Queensland before moving to the U.K. Dion Leonard running the 2013 Kalahari Extreme 250km Marathon in the Kalahari Desert, South Africaĭion Leonard (born Sydney, Australia, 2 January 1975) is an Australian/British endurance athlete and ultramarathon runner, Motivational speaker, and author of New York Times Bestseller 'Finding Gobi', the non-fiction memoir of his story of his dog, Gobi, who ran 77 miles of a 155-mile race across the Gobi Desert.

Deon leonard