The source is near Salgótarján in Nógrád county. It flows through the towns of Bátonyterenye, Pásztó, Hatvan and Jászberény and flows into the Tisza at Szolnok.
A watercourse originates near Salgótarján in Nógrád County. It traverses the towns of Bátonyterenye, Pásztó, Hatvan, and Jászberény before emptying into the Tisza River at Szolnok.