Is That A Big Number?

If Diameter of Mars (6,790 km) was a standard unit ...

Length of the Nile River (6,850 km)...more would be about as big as Diameter of Mars

Length of the Kazakhstan-Russia border (6,850 km)...more would be about as big as Diameter of Mars

Road distance from Land's End to John o' Groats (1,350 km)...more would be 1/5 of Diameter of Mars

Length of the River Thames (346 km)...more would be 1/20 of Diameter of Mars

Length of the Oxford-Cambridge boat race (6.8 km)...more would be 1/1000 of Diameter of Mars

Length of the Las Vegas Strip (6.8 km)...more would be 1/1000 of Diameter of Mars

Height of Ben Nevis, highest point in British Isles (1.344 km)...more would be 1/5000 of Diameter of Mars

Length of the Starship `Discovery` in the Star Trek series of that name (683 m)...more would be 1/10000 of Diameter of Mars