This next use of por occurs with movement. You will often see this use of por alongside verbs of movement such as ‘going’, ‘walking’ or ‘entering’.
English: Let’s go through the park.
Español: Vamos a pasar por el parque.
English: You have to enter through there.
Español: Tienes que entrar por allí.
English: I run along the river every day.
Español: Corro por el río todos los días.