Multi-city trip planner: how to plan a round trip

A trip through several cities is one of the best ways to see a region – and one of the easiest to overload. The hard part is not finding sights but the arithmetic in between: how many days per city, which days are lost to travel, and whether the train or the plane makes more sense for each leg. This guide explains how to split a multi-city vacation into days, how to plan the transfers, what a good multi-day planner should show you, and how YesTrip handles round trips – with a worked 14-day example from Lisbon to Barcelona.

The short answer

• Days per city: at least two nights in every city, three or four in big capitals. One night is a stopover, not a visit.
• Travel days: the first day in a new city is a travel day. Plan a half day there, not a full one.
• Legs: train for up to about four hours city centre to city centre, plane for longer legs or where there is no direct rail link, bus where it is the only direct option.
• Flights: fly into the first city and home from the last (an open-jaw ticket), so you never travel back the way you came.
• Planner: use one trip for the whole route, not one trip per city – so the days, the map, the tickets and the costs stay together.

How to split the days between cities

Start with the total number of days, then subtract before you add. Every change of city costs roughly half a day: check-out, getting to the station, the journey, check-in. On a 14-day trip with four cities that is three changes, so about one and a half days go to travel. That leaves twelve and a half days for the cities themselves.

Then weight the cities. A big capital with several major museums and distinct neighbourhoods needs three to four days; a smaller city with a compact old town is well served by two to three. Our city guides give concrete numbers, for example how many days in Lisbon, Porto, Madrid and Barcelona.

Three rules keep the plan realistic:

1. No more than one change every two to three days. Moving every day sounds efficient but turns the trip into a sequence of stations.
2. Put the longest stay at the end or the start. You arrive tired and leave early, so a longer first or last stop absorbs that.
3. Leave one day open. Somewhere on the route you will want more time – a buffer day can go to whichever city you like most.

Transfers: train, bus or plane?

The right mode depends less on distance than on door-to-door time. A flight of one hour often becomes four or five hours with the way to the airport, security and the way into town. A train of three hours starts and ends in the centre.

For trains within one country, booking with that country's railway is usually simplest; for cross-border legs a comparison platform such as Omio shows trains and buses side by side^*. On high-speed trains in Spain, France and Italy a seat reservation is required – with a normal ticket it is usually included. Our guide on how to book trains and buses in Europe explains the details.

Example route: Lisbon – Porto – Madrid – Barcelona in 14 days

This route combines two capitals and two port cities and uses three different ways of travelling. It works well in spring and autumn and avoids backtracking: you fly into Lisbon and home from Barcelona.

1. Lisbon
2. Porto
3. Madrid
4. Barcelona

Base map: Natural Earth

Days 1–4: Lisbon. Arrival day plus three full days for the Alfama, Belém and the viewpoints, and if you like a day trip to Sintra. The first afternoon is enough for one neighbourhood.

Days 5–7: Porto. Direct trains run between Lisbon and Porto and take around three hours. By road the distance is about 314 km. Porto is compact: the Ribeira, the Douro bridges and the port cellars across the river in Vila Nova de Gaia fit into two relaxed days after the travel day.

Days 8–10: Madrid. This is the leg where the plane wins. By road it is about 555 km and more than six hours of pure driving time (plan about a third more with breaks), and there is no direct high-speed train between Porto and Madrid. A direct flight takes ca. 1 hour. Long-distance buses connect the two cities as well, but take most of a day. In Madrid, plan one day for the big museums along the Paseo del Prado and one for the old centre and the Retiro park.

Days 11–14: Barcelona. Between Madrid and Barcelona several operators run high-speed trains, which take roughly two and a half to three hours. Barcelona gets the longest stay because the last day is a departure day: Gaudí's buildings, the Gothic Quarter, the beach and one evening without a plan.

Need mobile data in two countries? One eSIM for Europe is simpler than two local SIM cards; providers such as Airalo cover Spain and Portugal, for example with an eSIM for Spain^*. More in our travel eSIM guide.

What a good multi-city planner should do

A multi-day itinerary is only easy to organise if the planner shows the trip the way you will experience it: day by day, city by city. Look for these things:

• One trip, several cities. The whole route lives in one plan, not in four separate trips you have to keep in sync.
• Days assigned to cities. You see at a glance which day belongs to which city and can move a day from one city to another.
• Travel days visible. The leg between two cities appears as a stop in the plan, with the time it takes.
• Distances inside each day. Each day shows how long you are on the move, so an overloaded day stands out.
• A map for the whole route. Before the trip you see the route; on the road you see the city you are in.
• Tickets and costs per trip. Train and flight tickets of every leg in one place, and the expenses of the whole trip together.

Several apps cover parts of this list. Stippl, for example, maps each stop and calculates distances, which suits road trips; Wanderlog combines an itinerary, a map and a budget. Our comparison of AI trip planner apps lists what each provider states officially.

How YesTrip plans a multi-city trip

In YesTrip a multi-city trip is a round trip: when you create a trip, you add more than one city – one city is a normal trip, two or more make it a round trip, up to eight cities per trip. Under "Days per city" you set how long you stay in each place with one day more or one day less, or you tap "Let AI split the days" and adjust the suggestion as you like.

Each day then belongs to one city, and the day headers say which. When the AI suggests the day plan, it places every stop of a day in or near that day's city and treats the first day in a new city as a travel day. Flights sit in the same list as sights, so the arrival and the first afternoon fit together; within each day you see the stops, how long you are on the move and the walking time between stops.

On the road, the Today view shows the next stop and the way there, wherever you are on the route. The offline package downloads the map of the trip's area before you go, and plan and tickets are stored on the device anyway. Expenses are tracked for the whole trip, so you see what the route cost in total and, travelling with others, who owes whom. If plans change, you can ask the AI in the trip chat to add or remove a city or shift the days. Flights, hotels and tours for every stop can be found in one search; you book directly with the provider, never through YesTrip.

YesTrip is free. The AI features use credits – 40 free credits every month – and the map, expenses and the offline package need none.

Other classic multi-city routes in Europe

• Central Europe by train: Berlin – Prague – Vienna – Budapest, with short legs between capitals. Details in our Interrail route ideas.
• Italy: Milan, Venice, Florence, Rome and Naples, all linked by high-speed trains.
• Portugal only: Porto, the Douro Valley, Lisbon and the Algarve work best by car; see our Portugal road trip.

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