This is a list of the extreme points of Slovakia: the points that are farther north, south, east or west than any other location, as well as the highest and lowest points.
The distance between Záhorská Ves (the westernmost point) and Nová Sedlica (the easternmost point) is 428 km.
https://web.archive.org/web/20090207035408/http://www.slovakia.viasalus.sk/index-eng.php