The 434 bus route is the best way to travel up the Pena Palace from Sintra train station. The bus follows a one-directional loop that departs from the Sintra train station and heads up the hill to the Moorish Castle and Pena Palace, before returning to the train station via the historic centre of Sintra.

To get to the Pena Palace from the Sintra train station in 2026, the most popular and efficient method is taking the 434 Tourist Bus (Circuito da Pena). This bus departs from right outside the station every 10 to 15 minutes and loops up the steep, winding hill to the palace entrance. A 24-hour hop-on-hop-off ticket for this route costs approximately €13.50, which is pricey but necessary given that the walk is a very demanding 50-minute uphill hike that many visitors find exhausting. Alternatively, you can take a taxi, Uber, or tuk-tuk, which typically costs between €15 and €25 depending on demand. A 2026 "pro-tip" is that the historic center of Sintra is now largely closed to private traffic, so the 434 bus is often the fastest way to bypass congestion. Ensure you have your timed-entry ticket for the palace already booked online; in 2026, you cannot buy tickets at the gate, and if you miss your specific 30-minute entry window because of bus queues, you may be denied entry to the palace interior.