Portugal's CP train network makes car rentals completely unnecessary for solo travelers. Follow this itinerary from north to south.
Solo Scout Rule
Always store emergency local transit contacts and keep an offline copy of your embassy address and medical insurance policy stored on a secondary USB or cloud vault.
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Written by David
Solo Travel Veteran & Editor
David has traveled through 50+ countries completely solo over the past 8 years. He tests security gear, maps efficient transit routes, and builds honest guides for first-timers.