The European route E55 passes through the following cities:

Helsingborg - Elsinore - Rostock - Berlin - Dresden - Teplice - Prague - Vienna - Ancona - Ioannina - Arta (bypasses) - Amphilochia - Agrinion - Messolonghi - Rhion * Antirrhion - Patras - Kourtesi - Marathia - Pyrgos - Epitalion - Zacharo - Kalo Nero - near Dorio - near Oichalia - Allagi - Thouria - Kalamáta

From Helsingborg, the route continues northward through Sweden and into Finland, although for practical reasons it there remains signed by its old number, E4.

• Length: 3,305 km
• First administered:

Routes run through

• Sweden
  • Helsingborg
• Denmark
• Germany
• Czech Republic
  • Teplice, the Czech Republic, E442
  • Prague, the Czech Republic, E48 , E50 , E59 , E65 , E67
  • Tábor
  • České Budějovice E49 , E551
  • Dolní Dvořiště
• Austria
  • Linz, E60 , E552
  • Salzburg, E52 , E60 , E641
  • Villach, E61 , E66
• Italy
  • Treviso
  • Udine
  • Palmanova , E70
  • Venézia-Mestre E70
  • Ravenna
  • Cesena, E45
  • Rimini
  • Fano
  • Ancona
• Pescara, E80
• Canosa di Puglia , E842
• Bari, E843
• Brindisi, E90 Preveza to Messolonghi
• Greece
  • GR-6: (Igoumenitsa to Ioannina), E90, E92
  • Igoumenjht
  • GR-5: 240 km (Rion to Ioannina, with a 6 km joint with E65 and GR-48)
  • GR-8A, (near Kastellokampos and the GR-5 interchange)
  • GR-9: 180 km (near Kalo Nero to the end of the beltway)
  • GR-9A : 34 km (near Allagi to south of Kalo Nero )
  • GR-7: 34 km (Kalamata to north of Allagi), joint with E65