More known as a hiker's pass, this ascent starts in the ski resort town of Grindelwald in the Bernese Oberland, deep in the heart of the Jungfrau region. While listed at 10 km and 9.2%, the first three kilometers are actually pleasant, meaning the last seven bit hard with an average of 11%, thereby offering virtually no respite until the top. Only farmers' vehicles and the post bus are allowed on this pass, so enjoy the spectacular views with little to disturb you, except the gradient that is.