Wikipedia:

The Haute Route Chamonix-Zermatt is the most famous glacier route in the Alps.

This is a Premier Route (Chamonix round trip). To claim an FKT on this route, you must meet a high standard of documentation and verification. See details here: https://fastestknowntime.com/premier-routes.

The variations we currently track are:

http://www.ipp.org/

The Illinois Prairie Path is a multi-use nature trail for non-motorized public use. It spans approximately 61 miles in Cook, DuPage and Kane Counties in Northeasten Illinois. A former right-of-way for the old Chicago Aurora & Elgin electric railroad, it was the first U.S. rail-to-trail conversion in the nation in the 1960’s.