STHLM Trail Marathon

Warm welcome to the second edition of STHLM TRAIL MARATHON All races take place on a very beautiful, approximately 15 km long course. Each lap will offer you nearly 500 meters of elevation. Expect great views and a tough run, mostly in hilly terrain, mostly on trails, sometimes unpaved but also on a few gentler sections where you can stretch out and run for a few hundred meters.

New for 2026 • Be at the start line already in April! This time we are running in early spring, so mark April 18th in your calendar now. • Kids Trail, a free race for our younger runners (born 2014 or later). • The Brain Race, a virtual race that runs for 18 days where the entire registration fee goes directly to the Brain Foundation and vital research on epilepsy. • Course preview runs. On two occasions, we will run through the first and second parts of the course. • Virtual running sessions in the Heyey app to ensure you stay in shape all the way to the start line in April.

What is not new for 2026 • The course, a tough and very beautiful route around Flatensjön. • Sprint and Ultra, two trail races that challenge you a little extra. • Grit, the ultimate test that we do not believe anyone can complete. Prove us wrong and you will earn both honor and fame, as well as some prize money.

All info on the organizer's website