Seskarö Trailrun is a family-friendly trail race held at Seskarö Havsbad & Camping in the Haparanda archipelago of northern Sweden. It provides adult distances of 3 km, 7 km, and 12 km, along with children's and junior routes of 500 m, 1 km, and 2 km, making the day suitable for beginners, regular runners, and families with young children.
The routes follow the established Seskarö Trails network through the forests of Norrbotten County, featuring a combination of easy runnable paths, more technical trail sections, sand, and pebbly terrain. The event emphasizes enjoying the run over solely pursuing fast times, and any remaining funds are reinvested into maintaining and developing the Seskarö Trails outdoor area.