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If you're planning a European city break, travelling by train could open up quicker and more affordable travel options.

Research shows it can be a speedy way for Britons to visit many of the continent's most popular routes, once airport transfers, security queues and boarding times are taken into account.

This data was gathered by global travel booking site Omio, which identified 25 European routes where travelling by train could save you nearly two hours (110 minutes), and fares start from as little as £10.

From direct Eurostar services to high-speed connections between Europe's most loved cities, it highlighted four routes where swapping the plane makes sense, starting with two that depart right from London.

London to Brussels

The Eurostar whisks you from London to Brussels in just 2 hours 5 minutes — 83 minutes quicker than flying when you account for airport time. Fares start at around £148, and you step off the train right in the heart of the city.

Brussels is great for a quick getaway, with more than 100 museums to explore and stunning medieval streets to wander. Holidaymakers can round off the day with Belgian beer and some of the world's finest chocolate. July temperatures averaging 23°C make it lovely for exploring on foot during the summer.

London to Paris

The Eurostar to Paris takes just over two hours — more than 90 minutes faster than flying once the full airport time is included, according to the experts.

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You arrive at Gare du Nord with the city's best attractions on your doorstep, making it possible to enjoy museums, cafés, boulangeries and iconic landmarks before heading home the same evening, if you wish. Peak fares start from roughly £180, but skipping a hotel by doing a day trip can make for big savings.

Vienna to Budapest

Britons already exploring Central Europe can consider this route. The train from Vienna to Budapest takes just under three hours — roughly 45 minutes faster than flying once you add in all the airport waiting around.

This is the most affordable option. Rail tickets start from just £10, while flights average around £172, the experts stated. That's a potential saving of £162, which goes a long way in Budapest. The city is loved for its thermal baths, buzzing ruin bars and gorgeous Danube river cruises.

Foodies can tuck into traditional goulash at the historic Central Market Hall, then grab coffee and cake at one of the city's grand cafés. With July temperatures hitting 28°C, it's perfect for enjoying everything outdoors during the summer.

Madrid to Valencia

Spain's high-speed rail link between Madrid and Valencia is another route where the train can beat flying. The journey takes just under two hours — around 110 minutes quicker than a flight — and drops you right in the city centre.

Valencia is one of those destinations that often gets overlooked in favour of Barcelona and Madrid, but it is worth a visit. It is the birthplace of paella, home to striking architecture and a beautiful historic cathedral, and it is home to sandy beaches. For Britons planning a Spanish long weekend, it's a fantastic option.

Train fares start from just £16, making it one of Europe's most affordable city break routes.