Roller skiing is a non-snow equivalent to cross-country skiing. Emulating skis, elongated inline skates, with wheels at the ends, Balmoral Castle, UK Stock Photo - Alamy
electric jet ski with 18 wheels surfs over water, land, & rocks as all-terrain centipede vehicle
Roller skiing road safety. Some basics – Marwe
Sports Parts Inc. Orange Ski Wheels Dolly Set - SC-12015 Snowmobile - Dennis Kirk
Roller skiing - Wikipedia
The 'world's worst skier' Adrian Solano had only ever trained on wheels - BBC News
Why you should start to ski on wheels — Roller Ski Downunder & Nordic walking WA
Getting started with skating on roller skis - YouTube
Skimover Easy skis carrier
Rollerskiing: Getting Fit for Cross Country Skiing - Tracks and Trails