Hitchhiking out
East towards Jericoacoara, Fortaleza
At Praça Santo Antonio and throughout the whole city you will find several buses going to Terminal Rodoviário de Parnaíba (02°55′41.71″S 41°45′11.63″W). As soon as you got off the bus you only need to take a left in the roundabout ahead of you and stick out your thumb on the side of the road. Good luck!
West towards Barreirinhas (Parque Nacional dos Lençóis Maranhenses), São Luis; South towards Teresina
At Praça Santo Antonio you will find several buses going to a road junction known as Delta (02°56′18.96″S 41°45′19.07″W). As soon as you got off the bus you only need to cross the roundabout ahead of you and stick out your thumb on the side of the road. Good luck!