Did you know?
Length of the Congo River (4,700 km) is 25 x Length of the M25 Orbital motorway around London (188 km)
Tweet this comparison
Length of the British Grand Prix Formula 1 motor race (306.3 km)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.