It is not possible to travel around Andorra by air.
Andorra is a gorgeous, safe place for cycling, though its steep roads and high-altitude Pyrenean passes certainly make it a challenge. Find maps of routes and lists of cycle-friendly hotels through Andorra Turisme.
It is not possible to travel around Andorra by boat.
Andorra is well served by the Cooperativa Interurbana Andorrana network of buses linking the capital with destinations across the principality, which operate regularly from 7am to 8.30pm or 9.30pm. Rates are between €1.80 and €6.10, depending on how many zones you travel through.
Interurban Buses from Andorra la Vella
Sant Julià de Lòria
Pas de la Casa
Car & Motorcycle
Driving is by far the best way to explore Andorra. With all those narrow mountainous roads, however, it's important to keep an eye on weather conditions and winter snow reports, which are monitored live online at www.mobilitat.ad. Car hire costs from around €50 per day, but is cheaper with longer-term rentals; you'll need a valid driving license and credit card.
It is not possible to travel here by train.