Bieg Trzech Jezior pencil Edit Nierzym, Poland • 27 Jul 2025 The Bieg Trzech Jezior will take place in Nierzym on Sunday 27 July 2025. You can run 5 kilometers. Visit the organization's website for the most recent information. Poland Lubuskie Nierzym Race information Registration 5 km Visit the organization's website for the most recent information.