| rank | country | elevation difference / √(area) |
| tallest 1 | |
| tallest 2 | |
| tallest 3 | |
| tallest 4 | |
| tallest 5 | |
| tallest 6 | |
| tallest 7 | |
| tallest 8 | |
| tallest 9 | |
| tallest 10 | |
| tallest 11 | |
| tallest 12 | |
| tallest 13 | |
| tallest 14 | |
| tallest 15 | |
| tallest 16 | |
| tallest 17 | |
| tallest 18 | |
| tallest 19 | |
| tallest 20 | |
| | rank | country | elevation difference / √(area) |
| flattest 1 | |
| flattest 2 | |
| flattest 3 | |
| flattest 4 | |
| flattest 5 | |
| flattest 6 | |
| flattest 7 | |
| flattest 8 | |
| flattest 9 | |
| flattest 10 | |
| flattest 11 | |
| flattest 12 | |
| flattest 13 | |
| flattest 14 | |
| flattest 15 | |
| flattest 16 | |
| flattest 17 | |
| flattest 18 | |
| flattest 19 | |
| flattest 20 | |
| (tallest 1) | |
| tallest 21 | |
| tallest 22 | |
| tallest 23 | |
| tallest 24 | |
| tallest 25 | |
| (flattest 5) | |
| flattest 21 | |
| flattest 22 | |
| (flattest 23) | |
| flattest 23 | |
| flattest 24 | |
| flattest 25 | |
| flattest 26 | |
|