On 31 December 2011, Denniss began a quest to run around the world. He set a new world record and while doing so raised money for Oxfam. Dennis completed the 26,232 km journey on 13 September 2013, becoming just the second person to successfully complete a fully documented world run according to the rules defined by the sport's international governing body, the World Runners Association, in the process setting a new world record of 622 days for the Fastest Circumnavigation of the Earth on Foot. His accomplishment was the equivalent of running 622 marathons in 622 days in extremes of heat and cold.
- Alias-Pseudonimo-Pseudonyme: -
- Nationality-Nazionalità-Nationalité: Australia
- Birth/death-Nascita/morte-Naissance/mort: -
- Means of transport-Mezzo di trasporto-Moyen de transport: On foot-A piedi-A pied
- Geographical description-Riferimento geografico-Référence géographique: Around the World-Giro del mondo-Tour du monde
- Internet: http://www.tomsnextstep.com/