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Oct
11
Saturday

Sörmland Ultra Marathon – SUM

Website

The Sörmland Ultra Marathon – SUM will take place in Stockholm on Saturday 11 October 2025. You can run 50 kilometers. Visit the organization's website for the most recent information.

Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
50 km
50 Km Ultramarathon

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