The 0 to 100 Project (Guillaume Millet) is an 18-month scientific study aimed at transforming 40 sedentary individuals into CCC® (100 km) finishers. The program combines in-depth medical monitoring and progressive training (Trail School) to measure the impact of the activity on health and quality of life. Supported by an inclusive component (Project 0 to 40), the project aims to inspire the fight against sedentary lifestyles.