- John Thomas
- 9,847.12 metre(s)
- France (Montchavin les Coches)
The greatest vertical ascent on a bicycle in 12 hours (male) is 9,847.12 meters (32,306.76 ft) and was achieved by John Thomas (France), in Montchavin les Coches, Savoie, France, on 11 September 2016.
John has been a keen amateur cyclist for the last 11 years, and he regularly competes in races across France and Italy.