In this page Megasport Travel provides important information about Portugal Train Tickets and Portugal Train Times. In Portuguese trains you will have comfortable transportation at very low ticket prices.
Portugal Train Times and Tickets: Lisboa-Faro Train Times and Faro-Lisboa: https://www.cp.pt/StaticFiles/Passageiros/horarios/horarios/PDF/ap_ic/porto_lisboa_faro_lagos.pdf
Algarve Train Times and timetable: https://www.cp.pt/StaticFiles/Passageiros/horarios/horarios/PDF/r_ir_uc/vrantonio_lagos.pdf
Additional information about the transport of bicycles on trains: https://www.cp.pt/passageiros/en/passenger-information/Useful-information/bike-transport
