Sormlands 100 Trail Run

About this event

Starting from the lakeside town of Mariefred, this Swedish trail event offers five distances ranging from an 8km taster to a full 171km journey ending in Navekvarn. The routes wind south through Sörmland's forests and rolling terrain, with the longest covering 2,681 metres of climbing. What sets this event apart is its range — newcomers can explore the 8km or 21km options, while experienced ultra runners tackle the 107km or 171km challenges. The landscape showcases Sweden's quiet beauty: woodland trails, glimpses of Lake Mälaren, and eventually views toward the Baltic coast. With distances spanning beginner to expert, it's a rare chance for runners of all levels to share the same starting line and trail network in mid-September.

Distances