The Milla Solidaria is a 5-kilometer road race held in Alcobendas, Madrid. This non-competitive event is distinguished by its charitable nature, dedicating 100% of its profits to pediatric cancer research through the CRIS Against Cancer Foundation. The course takes place on the Athletics Track of the José Caballero Sports Center, offering a flat and fast route suitable for runners of all levels and those seeking to improve their personal bests. The event includes 1K and 2.5K distances, designed for family participation and younger participants. The organization emphasizes the charitable cause, aiming to raise awareness about the importance of childhood cancer research and encourage active community participation. Bib collection and practical information are managed through the event's official platform, facilitating participant registration and preparation.