Climbers and Backpackers have lists of the "Top 100 Climbs/Treks in the
World".

How about a list of the "Top 100 X-CRoutes in the World" with dominant
lift types and distances? A very few examples are included below.
Obviously, routes may be reversed, multiple flight types are possible
(yo-yo's. triangles, etc), and distances may be varied within these
basic geographic routes routes.

USA:
Tehachapi/CalCity, CA - Boundary Peak (700 km O/R Thermal)
CalCity - Reno (1000 km O/R Wave)
Ridge Soaring, PA - Bluefield, WV (1000 km O/R Ridge)
Minden NV -Cerro Gordo CA (500 km O/R Thermal)
Black Forest CO - Alamagordo NM (1000 km O/R Thermal)
CalCity/Tehachapi - Ely (700 km Thermal Dogleg)
Ely (1000+ km FAI triangles Thermal)
Minden - Steamboat CO (1000 km Wave/Thermal)

NZ
N and S Island (1000+ km O/R Wave)
Omarama - Mt Cook (300 km O/R Thermal or Wave)

Add your favorites!