European route E61 forms part of the United Nations International E-road network, of which it is a Class A intermediate north–south route. 270 kilometres (170 mi) long, it connects the southern part of Austria to the Adriatic Sea.

The E 61 routes through four European countries:

Villach - Rosenbach – Karawanken Tunnel

	Karawanken Tunnel – Hrušica - Jesenice - Kranj - Ljubljana (Ljubljana Ring Road)
	Ljubljana - Vrhnika - Postojna - Divača
	Divača - Sežana – SS58

• SS 58: Fernetti - Villa Opicina - Trieste
• SS 14: Trieste - Basovizza - Pesek di Grozzana

• G7: Krvavi Potok - Kozina - Starod

• D8: Pasjak border crossing - Rupa interchange
• A7: Rupa - Rijeka (A6 Orehovica interchange)

• UN Economic Commission for Europe: Overall Map of E-road Network (2007)