A good way to meet local runners is to participate in a parkrun. parkrun Park Miejski is in this area.
parkrun Park Modrzewie, Vistula RiverVistula River, Pole Mokotowskie and Lazienki Park are popular places to run in this area.
The course of parkrun Park Miejski has a soft surface for those who like to avoid the asphalt and concrete.
Do you know if tracks in Poland usually are open to the public?
parkrun Park Miejski
Warsaw Youth Sports Center | 400m track