Most Difficult Ski Resorts Chamonix, France. It is home to a World Cup downhill course and has some of the most challenging off-piste terrain. ... Fernie, Canada. ... Jackson Hole, USA. ... Kicking Horse, Canada. ... Palisades Tahoe, USA (formerly Squaw Valley) ... St Anton, Austria. ... Verbier, Switzerland. ... Val d'Isere, France. More items... Oct 27, 2021