KAZAN, RUSSIA - March, 2018: professional athletes skiers running ski marathon
KAZAN, RUSSIA - March, 2018: slow motion professional ski marathon, focus on the feet and skis athletes and ski track, the snow flying from under the skis
KAZAN, RUSSIA - March, 2018: Male skiers running skiing in winter, ski marathon
KAZAN, RUSSIA - MARCH, 2018: Backs of skiers on ski competition in sunny day
KAZAN, RUSSIA - MARCH, 2018: Skiers teenagers at the start on cross-country skiing
KAZAN, RUSSIA - March, 2018: Athletes skiers running Kazan ski marathon in the winter woods
KAZAN, RUSSIA - MARCH, 2018: The legs of skiers running on ski-track on cross-country skiing
KAZAN, RUSSIA - MARCH, 2018: Skiers teenagers running on ski-track on cross-country skiing
KAZAN, RUSSIA - MARCH, 2018: Group of skiers started on the ski-track on cross-country skiing
KAZAN, RUSSIA - March, 2018: athlete skiers with disabilities before the start of the ski race
KAZAN, RUSSIA - March, 2018: group of professional skiers participating in the winter competition
KAZAN, RUSSIA - MARCH, 2018: Two skiers running on ski-track in cross-country skiing