Is 20 nautical miles as long as Maxwell Montes?
It's about three-and-a-half times as tall as Maxwell Montes
The height of Maxwell Montes is about 5.90 nautical miles.
(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 5.90 nautical miles. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
There's more! See other comparisons to 20 nautical miles...