Gymnastics for the brains in anaerobic conditions. Simple tests could be very difficult to solve, while the blood is constantly pumped only to the legs. Approximately after the 17th (General) / 10th (Warrior) kilometer, each team will receive a list of logical tasks, which will have to be solved within the next 3 kilometers. The tasks might be easy… or perhaps not? We will see that – and each unresolved task will bring a penalty time of 2 minutes and a half.