The Dusky Track covers 84km (including an out & back section to Supper Cove) between Lake Hauroko and Lake Manapouri in Fjordland National Park on the South Island of New Zealand.  It is normally walked in 8-10 days.  The NZ DOC cautions trampers:

This is a very popular 40-mile segment of the Appalachian Trail, which cuts through the heart of some of the rockiest segments of the entire length ("Rocksylvania").

Summit the highest peaks of NH (Mt Washington), VT (Mt Mansfield) and MA (Mt Greylock) by any route.  Time is car-to-car total time from the TH for the first summit to the final TH.