Jakuszycka Dwunastka 12K 2026

Jakuszycka Dwunastka is the official 12 km race of the Letni Bieg Piastów weekend in Jakuszyce, Poland. The organizer describes it as a varied mountain course through the Izera Mountains for regular participants, with start and finish at Polana Jakuszycka and about 250 m of elevation change.