Choose 100 miles, 100km, 50km, 22km or our new 8km and 8km Night Trail in one of Sweden’s most biodiverse and beautiful regions. 5–7 September 2025 will be the forth edition of the Sörmlands 100 Trail Run.
100 miles running south from Mariefred the picturesque town on the banks of Lake Malaren to the beautiful coastal village of Navekvarn. 2700 vertical metres of climbing.