Byløpet begins in downtown Skien near Arkaden, with the event area located on the square outside the shopping center. This is Grenland’s largest city race and half marathon, offering 5 km, 10 km, and half marathon distances. Serious runners, casual runners, school groups, and families can participate on the same race day.
The route circles Hjellevannet, providing runners with a city-center start and a loop through Skien’s lakeside areas. The event also includes Ibsens Barneløp for children aged 0-10, extending beyond a timed race for adults. Club runners from local and regional teams are present in the results, and the half marathon can be competitive. In a recent edition, the men’s winner finished in 1:16:42, with the second-place finisher just eight seconds behind.