European route E66
|Length:||651 km (405 mi)|
|Countries:||Italy, Austria, Hungary|
|International E-road network|
European route E 66 is a part of the inter-European road system. This Class A intermediate west-east route runs 651 kilometres (405 mi) from Franzensfeste in Italy to Székesfehérvár in Hungary, connecting the Alps with the Pannonian Plain.
The E 66 routes through three European countries:
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