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cross-country skiing articles
5 articles on cross-country skiing, newest first. Every one is sourced and links to the calculator it applies to.

How Therese Johaug Trains (What a Comeback at 36 Actually Returns)
Johaug unretired at 36, took three silvers and a bronze at the 2025 Worlds, then stopped for good. What came back, and what did not, is the useful part.

How Johannes Klæbo Trains (Cross-Country Skiing's Bottomless Engine)
Klæbo won all six events at the 2026 Winter Olympics in the most aerobic sport there is. The Norwegian model behind it, and your own I1 to I5 zones.

How Harald Østberg Amundsen Trains (a Crystal Globe, No Olympic Medal)
Amundsen won the overall World Cup, then finished 4th, 6th and DNF at the 2026 Olympics. Season-long form and one-day form are different training problems.

How Sturla Holm Lægreid Trains (Shooting Straight at 170 bpm)
Five medals in five races at the 2026 Olympics, none of them gold. Biathlon is decided by how fast your heart rate falls, and that is a trainable number.

How Jessie Diggins Trains (Twice a Day, and Why She Calls Food Fuel)
America's most decorated cross-country skier trains twice a day, six days a week. The reason she talks about fuelling is the reason the volume is possible.