Cross-country skiing is the ultimate physical challenge, and the endurance event will be on display at the Winter Youth Olympics.
Competitors at Lausanne 2020 will be looking to follow in the snow tracks of Kim Magnus and Johanna Hagstrom.
Magnus won two golds and a silver at the 2016 Youth Olympic Games in Lillehammer, with Hagstrom claiming gold and silver.
The cross-country skiing events take place at Vallée de Joux in Jura from January 18-22.
The different disciplines at Lausanne 2020
There will be four cross-country skiing events at Vallée de Joux: the women’s and men’s sprint free, the women’s 5km and men’s 10km classic, the women’s and men’s cross-country cross free, and the Nordic Mixed Team NH 4x3.3.
The classic events use interval starts of between 10 and 30 second. Skiers aim to post the fastest individual time winning the race.
In the sprint there is a qualification round, which uses intervals as skiers look to record a top-30 time in the hope of reaching the knock-out stages, where athletes start at the same time.
The top two from each of the five quarter-finals – plus the next two fastest skiers – competes in one of two semi-finals, featuring six athletes each. The final then consists of six competitors, with the first across the finish line winning gold.
In the cross free, jumps and turns are implemented to test the skiers, while the format follows a similar pattern to that of the sprint.
The aim of qualification is to reach one of three semi-finals featuring 10 competitors each, with the final also consisting of 10 athletes.
How does the Nordic Mixed Team NH 4x3.3 work?
Six athletes from one nation compete together for gold: one male and one female cross-country skier, one male and one female ski jumper, and one male and one female Nordic combined athlete.
The Nordic combined athletes take part in both events, first taking to the normal skill for the ski jump before joining their cross-country compatriots.
The ski jumping is always first, and those combined scores are used to determine the time differences when starting the 4 x 3.3km relay race in the cross-country skiing.
Cross-country skiing schedule at Lausanne 2020
Saturday, January 18
11:00 - 14:15 - Women's/Men's Cross-Country Cross Free
Sunday, January 19
12:00 - 15:30 - Women's/Men's Sprint Free
Tuesday, January 21
11:00 - 12:00 - Women's 5km Classic
13:00 - 14:15 - Men's 10km Classic
Wednesday, January 22
10:00 - 14:30 - Nordic Mixed Team NH 4x3.3km
(10:00 - 11:00 - Ski Jumping NH, 13:30 - 14:30 - Cross-Country Skiing 4x3.3km)