The iLumen European Solar Challenge is the world's only 24-hour endurance race for solar cars, held every two years on the former Formel 1 circuit of Circuit Zolder in Belgium. On the racetrack, the solar cars develop with low power consumption and optimized aerodynamics to their full potential in one day. During the Challenge, each team is allowed a maximum of 2 charging stops to recharge the battery even at night.
The aim of the race is not only to cover the greatest possible distance within 24 hours, but also to win with innovations in vehicle development, the most consistent 8 lap times, and the fastest lap time. 20 racing teams from all over the world come together here to compete against each other in this endurance race. The race´s start is similar to the one on the 24-hour race at Le Mans.