Skate skiing is a another form of cross
country skiing that is quite different from classic. Its
movements are mostly comprised of skating motions similar to
roller blading or ice skating, pushing off of one ski and
shifting the skier's weight onto the other and
gliding. One of the key differences is that the skier
never has to stop the motion of their skis to push off the
snow. Because of this, the ski never has to overcome static
friction with the snow. The only resistance comes from the
air and the kinetic friction with the snow, which is usually
considerably smaller than its static counterpart.
above
photo from Max Pooch, My Northern
Adventure
https://home.uia.no/maximp16/assignments/overnight-trips/2-basic-ski-course-evje-06-02-10-02-2017/
