Here are a few suggestions for your next trip from Sintra

In 2 hours, you can reach Amadora, Queluz, Cacém, Rio de Mouro, Lisbon.

In 4 hours, you can reach Setúbal, Coimbra, Évora.

In 5 hours, you can reach Porto, Vila Nova de Gaia.

In 7 hours, you can reach Braga.

In 8 hours, you can reach Vigo.