- Distances shorter than 10 km
- 10 km is equal to:
- 10.924 km -- deepest known point of the ocean, Challenger Deep in the Marianas Trench.
- 11 km - distance between Thane and Kaasar Vadavali
- 18 km -- cruising altitude of Concorde
- 21 km -- length of Manhattan
- 34 km -- Narrowest width of the English Channel
- 39 km -- undersea portion of the Channel tunnel
- 42.195 km -- length of a marathon course
- 43 km -- diameter difference of Earth's equatorial bulge
- Distances longer than 100 km