Here are a few suggestions for your next trip from Porto(Sao Bento)

In 2 hours, you can reach Porto, Vila Nova de Gaia, Braga.

In 3 hours, you can reach Coimbra.

In 4 hours, you can reach Vigo.

In 5 hours, you can reach Lisbon, Amadora, Queluz.

In 6 hours, you can reach Cacém, Rio de Mouro.

In 7 hours, you can reach Setúbal, Évora.

In 8 hours, you can reach Valladolid.