The youngest man to complete a marathon on all seven continents is Timothy Harris (United Kingdom) (b.26 February 1983) who was 23 years 339 days when he completed the Marrakech Marathon, Marrakech, Morocco, on 28 January 2007.

Tim ran the following marathons in each continent:

1. South America: K42 Patagonia Mountain Marathon, Neuquen, Argentina

2. Oceania: Fielding Marathon, New Zealand

3. Europe: Palermo Marathon, Palermo, Italy

4. North America: Seattle Marathon, Seattle, USA

5. Asia: Singapore Marathon, Singapore

6. Antarctica: Antarctic Ice Marathon, Antarctica

7. Africa: Marrakech Marathon, Marrakech, Morocco