The Classic Western Loop (14 days)
Route: London → Paris → Amsterdam → Cologne → Basel → Milan → Florence → Rome
Why it works: This is the most popular Interrail route for good reason. Every connection is fast and frequent, the cities are iconic, and you can complete it entirely on day trains. No mandatory seat reservations except Paris→London (Eurostar, book early) and Italian Frecciarossa trains.
Rough pace: 2 nights London, 2 nights Paris, 2 nights Amsterdam, 1 night Cologne, 1 night Basel, 1 night Milan, 2 nights Florence, 3 nights Rome.
The Iberian Adventure (14 days)
Route: Barcelona → Madrid → Lisbon → Porto → San Sebastián → Barcelona
Why it works: Spain and Portugal are dramatically underrated on the train circuit. The AVE high-speed network is superb — Barcelona to Madrid is 2.5 hours. The Lisbon–Porto train along the coast is one of Europe's most scenic.
Key note: Book AVE seats well in advance in summer. The Renfe app is the easiest way to add reservations to your pass.
Scandinavia & the North (14 days)
Route: Copenhagen → Malmö → Stockholm → Oslo → Bergen → Copenhagen (by ferry)
Why it works: The Nordic countries reward slow travel. The Bergen Railway (Oslo–Bergen) is one of the world's great train journeys — 7 hours through fjords and mountain plateaus. The Copenhagen–Stockholm route crosses the Øresund Bridge.
Note: Scandinavia is expensive — budget roughly €80–120/day for accommodation and food outside of hostels.
Central Europe & the Alps (14 days)
Route: Vienna → Salzburg → Innsbruck → Zurich → Interlaken → Geneva → Lyon → Paris
Why it works: This arc through the Alps combines Austria's imperial cities with Switzerland's mountain scenery and France's gastronomy. Most trains are scenic; the Innsbruck–Zurich leg passes through the Arlberg and Rhine Valley. The Glacier Express (Zermatt–St. Moritz) is a worthwhile detour if you have a spare day.
Pace tip: Don't rush Switzerland — Interlaken as a base for 2–3 nights lets you day-trip to Jungfraujoch or Grindelwald.
The Balkans & Eastern Europe (14 days)
Route: Budapest → Ljubljana → Zagreb → Split → Dubrovnik (bus) → Sarajevo → Belgrade → Budapest
Why it works: Eastern Europe and the Balkans are the most affordable region on this list and increasingly well-connected by train. The Budapest–Ljubljana route passes through stunning Alpine scenery. Note that Bosnia and Kosovo are not covered by Eurail/Interrail — short bus legs plug the gaps.
Best season: May–June or September — July/August on the Adriatic coast is very crowded.
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