S:t Hans Extreme is a trail race held in late May on S:t Hans Backar in Lund, Sweden, with the hill serving as the central feature. Participants can select from a 6-hour Ultra, a 10 km, a 5 km, or a 2.5 km lap. Team competitions are also part of the event. The race is suitable for those seeking a demanding workout and for competitors aiming for a specific time, as the course is technical and includes significant elevation gain per lap.
The format utilizes the same compact area for diverse objectives: some runners aim to cover maximum distance within six hours, while others compete in the shorter races. Previous results indicate Ultra winners completing over 52 km in the women's race and over 65 km in the men's race, demonstrating the loop's challenging nature. Lunds OK organizes the event, posting results and photos for all categories. The organizer has also had a race leader run alongside participants in the Ultra 6h class.