If Length of coast-to-coast American Discovery Trail (Northern Route) (7,780 km) was a standard unit ...
Distance from the Earth to the Moon (384,000 km)...more would be 50 x Length of coast-to-coast American Discovery Trail (Northern Route)
Circumference of Neptune (154,600 km)...more would be 20 x Length of coast-to-coast American Discovery Trail (Northern Route)
Circumference of Mercury (15,330 km)...more would be 2 x Length of coast-to-coast American Discovery Trail (Northern Route)
Length of the Trans-Canada Highway from Victoria to St John's City (7,820 km)...more would be about as big as Length of coast-to-coast American Discovery Trail (Northern Route)
Length of Route 66 from Chicago to Los Angeles (3,940 km)...more would be 1/2 of Length of coast-to-coast American Discovery Trail (Northern Route)
Length of India, North to South (3,100 km)...more would be 2/5 of Length of coast-to-coast American Discovery Trail (Northern Route)
Length of the Rio Grande (USA, Mexico) (3,057 km)...more would be 2/5 of Length of coast-to-coast American Discovery Trail (Northern Route)
Length of the Tigris River (1,950 km)...more would be 1/4 of Length of coast-to-coast American Discovery Trail (Northern Route)
Length of the British Grand Prix Formula 1 motor race (306.3 km)...more would be 1/25 of Length of coast-to-coast American Discovery Trail (Northern Route)
Length of the Suez Canal (193.3 km)...more would be 1/40 of Length of coast-to-coast American Discovery Trail (Northern Route)
Length of the Panama Canal (77 km)...more would be 1/100 of Length of coast-to-coast American Discovery Trail (Northern Route)
Is That A Big Number? - The Book
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
