1. Length of trail 10,450 km, 6,493 miles
2. Length in days 500 days
3. Start of trail Gibraltar (Es)
4. End of trail Larnaka (Cy)
5. Traildino grading MW, Moderate walk, backpacking trail
6. Hut tour grading T1, Walk

Gibraltar – Pyrenees – Lake Constance – Balaton – Rila – Kreta - Cyprus

With 10450km the E4 is by far the longest European trail, although there is a substantial gap in construction in Romania/Bulgaria. Starting off in the southern tip of Spain in Tarifa, it leads northeast, across the Pyrenees through France, Switzerland, Germany, Austria, Hungary, Romania, Bulgaria and Greece. Several ferry-rides lead across to the island of Crete and finally Cyprus.

After leaving Switzerland, the route offers a choice between the alpine route, for experienced mountain hikers only, and a less demanding subalpine alternative. They converge again before leaving Austria.

Spain

• GR7 Andorra - Tarifa, fom Tarifa to La Mussara
• GR172 Bellprat - Montserrat - La Mussara, from La Mussara to Montserrat
• GR4 Puigcerdà - Montserrat, from Montserrat to Puigcerdà

France

• GR36
• GR7
• GR68 - Tour du Mont Lozère
• GR44
• GR4
• GR9

Switzerland

• Entering from France at Geneva / Nyon
• Jura Höhenweg till Dielsdorf
• Partly own track
• Joint track with E5 on south border of Bodensee
• Last village is Rheineck

Main Way, Northern Branch

Austria (35 km)

• First village is Bregenz
• Bregenz – Hittisau / Hölfele Alm
• Last village is Hittisau / Hölfele Alm

Germany (300 km)

• First village is Staufner Haus am Hochgrat
• Maximiliansweg, Staufner Haus – Bad Reichenhall
• Last village is Bad Reichenhall / Bayerisch Gmain

Austria  (via Wienerwald South 490 km, via Wienerwald North 540 km)

• First village is Fürstenbrunn
• Voralpenweg, Weitwanderweg 04, Fürstenbrunn – Gersten
• Variant Wienerwald North, Gersten - Vienna / Kahlenberg
• Variant Wienerwald South, Gersten - Vienna / Kahlenberg
• Ostösterreichischer Grenzlandweg, Weitwanderweg 07, Vienna / Kahlenberg - Rattersdorf
• Last village is Rattersdorf

Alpine Way, Southern Branch

Austria (1.000 km)

• First village is Bregenz
• Nordalpenweg, Weitwanderweg 01, Bregenz - Vienna / Kahlenberg
• Ostösterreichischer Grenzlandweg, Weitwanderweg 07, Vienna / Kahlenberg - Rattersdorf
• Last village is Rattersdorf

Hungary (1.329 km)

• First village is Köszeg
• National Blue Trail, Irottkoe Mountain, Köszeg - Sátoraljaújhely, 1.063 km
• Great Plain Blue Trail, Sátoraljaújhely – Nagykereki, 260 km
• Own track, Nagykereki – Ártánd, 6 km
• Last village in Hungary is Ártánd, border with Romania

Eastern branch

Romania

• Recently, the first 150 km have been marked, and maps and guides will be made available soon

Bulgaria

Western branch

Hungary

• Continuing from Great Plain Blue Trail, Sátoraljaújhely – Nagykereki
• Great Plain Blue Trail / E7, Nagykereki - Mindszent
• E4 / E7 combined, Mindszent - Szeged
• Last village in Hungary is Szeged / Iala, border with Serbia

Serbia (1.240 km, 1.482 including detours)

• First village is Krstur, border with Hungary
• Iala (Hungary)/Krstur (Serbia) - Kanjiža – Senta - Kikinda– Arača – Novi Bečej – Melenci – Elemir - Zrenjanin- Carska bara – Kovačica - Farkaždin – Idvor – - Uzdin - Vladimirovac – Alibunar - Deliblatska peščara(devojački bunar) – Dolovo - Pančevo – Beograd – Kumodraž – Avala – Zuce – Leštane – Vinča – Ritopek – Brestovik –Smederevo Šalinac – Lipe – Radinac – Mihajlovac – Osipaonica – Požarevac Viminacijum (Kostolac) – Drmno - Ram – Zatonje – Veliko Gradište – Vinci – Usije – Golubac fortress – Kučevo – Ravništarka Brnjica – Dobra (Koznica) – Šomrda – Lepenski vir – Boljetinska reka (deviation: Požarevac – Toponica – Veliko selo – Crljenac – Vitovnica – Melnica – Ravništarka)- Štubej – Vukan – Gornjak – Krupajsko springhead – Beljanica – Žagubica – Milatovac – Selište – Kupinova glava – Jasikovo - Debeli lug – Majdanpek – Oman (loop: Boljetinska river – Lepenski vir – Pesača – Sokolovac – Kurmatura –Boljetin) – Liškovac – Mosna – Miroč – Veliki Štrbac – Golo brdo (Tabulum Traiani) – Kladovo -Brza Palanka - Vratna – Štubik –Plavna - Šarkamen – Negotin – Rajačke pimnice – Brusnik – Salaš - Sikole – Luka – Bor – Brestovačka spa – Zlot – Malinik – Boljevac – Mali Izvor – Rtanj (settlement) (deviation: Zlot – Šarbanovac Borski – Gamzigradska spa – Gamzigrad Rtanj settlment) - Šarbanovac Sokobanjski – Sokobanja - Devica – Beli potok – Tresibaba – Mučibaba – Kalna – Balta Berilovac – Crni vrh – Babun zub - Topli Do (Mrtvački most) - Zavojsko jezero – Basarski kamen – Visočka Ržana – Slavinja – Smilovci - Bačevo – Gradina - Kalotina (Bulgaria)
• Last village is Gradina , border with Bulgaria

There is yet no publication, marking is not finished. Maps are available:

Stari Begej – Carska Bara, 1:25.000, Geokarta, Belgrade, 2005
Beograd, Turistička karta područja, 1:100.000, Geokarta, Belgrade, 2008.
Stara planina, Nature Park, Mountain Touristic Map, 1:50.000, Geokarta, 2006.
Djerdap National park, 1:70.000, 2 maps, Touristic Map, JP Nacionalni park Djerdap, Donji Milanovac, 2005.
Avala, Mountain Touristic Map, 1:10.000, PSD „Avala“, belgrade, 2007.

Bulgaria

• First village is Kalotina (border with Serbia)

Greece

Cyprus

• E4