JB Street Run 21 is a street-running event in central Pietarsaari, Finland, with 5 km and 10 km races starting around midday in September. IK Falken organizes the competition, and the format is straightforward: runners choose the shorter city race or the longer 10 km option.
The event lists separate men’s and women’s categories at both distances, with junior divisions added for younger runners: under-19s race 10 km, while under-17 and under-15 runners race 5 km. C.O.R.E. Sports & Events handles inquiries and registration details, and a results service is part of the setup.