Klättermusen is the Head Partner of Sörmlands Winter Trail & 100

Klättermusen x Sörmlands

WE ARE BECOMING THE HEAD PARTNER FOR BOTH SÖRMLANDS WINTER TRAIL AND SÖRMLANDS 100.

In 2025, Klättermusen entered as the Head Partner for the Sörmlands 50K, as part of our 50th anniversary celebrations. This year, we are proud to announce that we are becoming the Head Partner for both Sörmlands Winter Trail and Sörmlands 100, across all distances.

Our shared mindsets have become the perfect match to take this partnership further. We care deeply about the outdoors, doing things a little differently, and bringing people together. The reasons are simple – it's about showing up, being part of something real, and supporting the people who make trail running what it is.

A Day On The Trails

In September this year we joined Sörmlands 100 Race - not just as a Main Partner for the 50K, but as runners ourselves.

To make the day even more special, we invited members of our community to come along. Everyone traveled together in the Klättermusen bus, creating a relaxed, connected atmosphere before hitting the trails. Whether you were running or cheering from the sidelines, the energy and support throughout the day were truly unforgettable.

It was a day of muddy shoes, shared challenges, and plenty of fun.

We can’t wait to be back in February and September for the 2026 races.

Join Us For Our Pre-Runs

Road to Sörmlands Winter Trail:

18th December – Intro to Winter Trail Running, 7–9 km Social Run

25th January – Perfect Warm-Up for the Race, 15 km Winter Trail

Road to Sörmlands 100:

19th March – Technique & Forest Flow, 8–10 km

16th April – Gear Testing Session, 8–10 km

10th May – Climbing & Descending Efficiency, 10–12 km

14th June – Long Trail + Fuelling Test, 18 km

28th June – Theme Course Race, Putting Everything Together, 20–30 km Point-to-Point

Join the Pre-Runs ➤

This event has always been about more than the miles - it’s about people coming together, sharing trails, and finding something real in wild places. Klättermusen understands that spirit. Their commitment to craft, durability, and the outdoors strengthens the experience for everyone who shows up. I’m incredibly proud to have them with us for the seasons ahead.

Billy White, Founder & Race Director, Sörmlands 100

Gear Up for the Trails

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