Atom'Run Relay is a team relay race held in November at the King Baudouin Stadium in Brussels. It is designed for mixed ages, featuring a main Atom'Run category for teams and an Atom'Run Kids relay for children's teams. The race is part of the Challenge Run in Brussels, utilizing electronic timing for a proper race setup within a community-focused day.
The route runs in and around the stadium, with music along the course and refreshments available after each lap and at the finish. A portion of the entry fee supports a local charity in Laeken, and the organizers implement a Zero Waste policy, using reusable cups at aid stations. Participants can use stadium changing rooms, showers, a free bag drop, and massages from physiotherapy students. Teams have access to a photo zone, children have supervised play areas, and the main hall includes a bar with catering.