A league is 3.0 statute miles or 4.8 kilometers. Therefore, 20,000 leagues under the sea would be 60,000 miles. Since the earth is only 7926.28 miles in diameter at the equator, 60,000 miles would put you 12073.72 miles in space on the other side of the globe.
- wjs1632 -
Travelling 20,000 leagues under the sea is no different to travelling 100,000 km in a car, all along roads with no space travel involved.