| Mode of travel: |
https://developers.google.com/maps/documentation/javascript/examples/elevation-paths?hl=de
http://www.visitholland.nl/maps/general-info/surface-vertical-profile/vertical-evaluation-profiles-holland.htm
https://map.geo.admin.ch/?topic=ech&lang=en&bgLayer=ch.swisstopo
http://www.heywhatsthat.com/profiler.html
UETLIBERG: https://www.heywhatsthat.com/?view=WM6JT43X
KANZLEISTRASSE: https://www.heywhatsthat.com/?view=WBLMU4LB