Countrywide Blue Tour in Hungary

The National Blue Trail is a national trail in Hungary, for most of its length part of the European Long Distance Walking Route E4. The route starts atop the Írott-kő Mountain on the Austrian-Hungarian border then leads across Hungary eventually ending 1,172 km later at the village of Hollóháza by the Hungarian-Slovakian border.. The name of the Kéktúra is a reference to the marking of the path itself: it is a horizontal blue stripe on a white rectangle. All segments of the trail are freely accessible to the public; no fees have to be paid or permits obtained, there is only one ferry to take over the Danube between Visegrád and Nagymaros where you have to purchase a ticket. Although to have an official completion, you have to purchase a stamping brochure from MTSZ, the organizer of the trail.

From the Wikipedia article “National Blue Trail”, CC BY-SA 4.0.