If Length of the Lincoln Memorial Reflecting pool in Washington DC (618 m) was a standard unit ...
Length of the Yangtze River (6,300 km)...more would be 10000 x Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of India, North to South (3,100 km)...more would be 5000 x Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of the Rio Grande (USA, Mexico) (3,057 km)...more would be 5000 x Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of the Rhine River (1,233 km)...more would be 2000 x Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of the British Grand Prix Formula 1 motor race (306.3 km)...more would be 500 x Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of the longest ski jump ever (2015) (251.5 m)...more would be 2/5 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of Tower Bridge over the Thames (244 m)...more would be 2/5 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of an ice-hockey rink (61 m)...more would be 1/10 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of the Blue Whale skeleton in London's Natural History Museum (25.2 m)...more would be 1/25 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Women's World Triple Jump record (2021) (15.67 m)...more would be 1/40 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Women's Olympic Triple Jump record (2021) (15.67 m)...more would be 1/40 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Length of a T-65 X-Wing starfighter in the Star Wars movies (12.5 m)...more would be 1/50 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Estimated length of Tyrannosaurus Rex (12.3 m)...more would be 1/50 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Wingspan of a Wandering Albatross (3.1 m)...more would be 1/200 of Length of the Lincoln Memorial Reflecting pool in Washington DC
Is That A Big Number? - The Book
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.