Content creator Marcos Galdón will attempt a 100 km single-day ski at Grandvalira in the third week of

Marcos Galdón plans to ski 100 kilometres in a single day at Grandvalira under strict rules: he will count only distance covered on skis (chairlift travel excluded) and will not pass any piste more than twice. The attempt, which he calls a “Two-shot run” or “Double only,” is scheduled for the third week of January.

Galdón, a snow enthusiast and content creator who runs the CaranorteVlogs channel with his partner Sònia Miranda, says the idea grew from a video showing someone combining runs across resorts to reach 100 km over a weekend. He initially considered a “monohamster” format—repeating the same run until the distance was reached—but changed the rules after follower feedback and route analysis, settling on Grandvalira for its variety of pistes and appropriate difficulty mix.

He has followed a 100-day training plan entirely designed with the help of artificial intelligence, combining strength, endurance and balance work with only one active-rest day each week. Galdón says consistency has been the hardest part; after 45 days of training his first day back on snow felt so good he did not stop for lunch.

Route planning has been meticulous: Galdón has calculated an average on-snow speed of roughly 20 km/h and warns that snow conditions will be the most critical variable. Miranda will be present at key points to coordinate and optimise transitions, while Galdón will manage nutrition and hydration with nuts and water with mineral salts. He also wants to keep the attempt within resort opening hours so others can replicate the challenge.

Galdón is seeking sponsorship to use longer skis for greater stability during the most fatiguing stretches. Beyond the athletic goal, he aims to test the value of a Grandvalira lift pass by measuring how many kilometres can realistically be skied in one day, and he may repeat the experiment at other resorts to compare large ski domains with smaller stations such as La Molina.

He acknowledges a fear of heights that he has worked on at a bike park and identifies sections like the Pas de la Casa as the most worrying uncontrollable elements. Galdón says he does not know anyone in the country who has attempted this specific challenge under the same conditions.

After completing the attempt he plans to rest, log the experience on Skitude and publish a transparent account and video of the challenge on his YouTube channel.