Have walked a fair amount in England, Scotland, Ireland, US and Switzerland, all unguided:
Pennine Way,
WHW,
Haute Route,
C to C,
Dingle Way,
Beara Way,
Mt Whitney,
White Mt,
John Muir,
Zion,
Aspen-Crested Butte,
Bryce Canyon,
R to R Grand Canyon,
etc