You can certainly use your pass to travel between cities in Spain and/or Portugal. Travel days do not have to be consecutive. There are 2 types of pass: continuous (15 days, 1 or 2 or 3 months) and flexi (X travel days within 1 or 2 months).

Yes, the Eurail Global Pass provides comprehensive coverage for the national rail networks of both Spain (Renfe) and Portugal (CP - Comboios de Portugal). You can use the pass to travel across the Iberian Peninsula, from the high-speed AVE lines connecting Madrid and Barcelona to the scenic regional routes along the Atlantic coast. In 2026, it is important to note that while the "fare" is covered by the pass, seat reservations are mandatory for almost all high-speed, long-distance, and night trains in both countries. These reservations typically cost between €5 and €30 extra per leg. Additionally, there is a small "gap" in the rail network between southern Portugal (Faro) and southern Spain (Seville); travelers must usually take a short bus ride to connect these two regions. For those focusing solely on one country, Eurail also offers the One Country Pass for either Spain or Portugal, which is often more cost-effective if you don't plan on crossing the border. Overall, the Eurail system remains the most flexible and scenic way to explore the rich cultures and sun-soaked landscapes of both nations.