The Arganda del Rey 'En Marcha' Against Cancer race is a 5-kilometer asphalt event held in Arganda del Rey, Madrid. This charity event, organized by the Spanish Association Against Cancer (AECC), dedicates its proceeds to cancer research and patient support. The course is urban and suitable for runners of all levels, including beginners, promoting family and group participation. A distinctive feature is the award for the largest group, encouraging participation from organizations and companies. The race is part of the AECC's 'En Marcha' initiative, which aims to mobilize society in the fight against cancer through sports and awareness activities. The organization provides basic services for participants, such as aid stations and chip timing, ensuring an organized and safe experience. The main goal is awareness and fundraising, making each stride a step forward in the battle against cancer.