Presentation of thru-hikes in Europe
UK
South West Coast Path
https://www.cicerone.co.uk/walking-the-south-west-coast-path
https://www.southwestcoastpath.org.uk/
Wales Coast Path
https://walescoastpath.co.uk/
https://www.visitwales.com/things-do/nature-and-landscapes/discover-wales-coast-path
Scottish National Trail
https://www.scottishnationaltrail.org.uk/
https://www.wayfaringkiwi.com/im-hiking-length-scotland
/https://youtu.be/_L4NNwyJ-HI?si=8lkOmf2AsZOyEctB
End to end trail
https://www.cicerone.co.uk/walking-the-end-to-end-trail
Ulster way
https://www.walkni.com/ulster-way/#:~:text=What%20is%20the%20Ulster%20Way,six%20counties%20of%20Northern%20Ireland.
SCANDINAVIA
Nordkalotten
https://www.nationalparks.fi/nordkalott-trail
https://www.traildino.com/trace/continents-Europe/countries-Norway/trails-Nordkalottleden
https://e1.hiking-europe.eu/en/hiking-trails/nordkalottruta-nordkalottleden
https://thestridersadventures.blogspot.com/2015/05/the-history-of-nordkalottleden.html
St Olav Way
https://www.visitnorway.com/things-to-do/outdoor-activities/hiking/pilgrimage-on-the-st-olav-ways/
St. Olavsleden
https://stolavsleden.com/
The Gudbrandsdalen
https://pilegrimsleden.no/en/trails/gudbrandsdalsleden
Skaneleden
https://www.skaneleden.se/en
BALTIC COUNTRIES
Forest Trail
https://baltictrails.eu/en/forest
https://www.visitestonia.com/en/why-estonia/the-baltic-forest-trail
Castal Trail
https://baltictrails.eu/en/coastal
https://www.visitestonia.com/en/baltic-coastal-hiking-route
POLAND
Main Beskid Trail
https://thru-hiking.com/the-main-beskid-trail-everything-you-need-to-know/
https://en.wikipedia.org/wiki/Main_Beskid_Trail
https://pajaksport.com/blog/73/main-beskid-trail-practical-guide-what-to-bring-and-how-to-prepare
SLOVAKIA
SNP Trail
https://snptrail.com/
CZECH
https://www.stezkaceskem.cz/en/
https://www.visitczechia.com/en-us/things-to-do/places/summer-sports/hiking-and-nordic-walking/s-czech-trail
https://faroutguides.com/czech-trail/
https://thru-hiking.com/trail/czech-trail/
GERMANY
Goldsteig
https://www.germany.travel/en/nature-outdoor-activities/goldsteig.html
https://www.bookmundi.com/ng/goldsteig-hiking-trail-in-germany
https://thru-hiking.com/trail/goldsteig/
Rheinhöhenweg Trail
https://www.traildino.com/trace/continents-Europe/countries-Germany/trails-Rheinh%C3%B6henweg/
https://en.wikipedia.org/wiki/Rheinh%C3%B6henweg_Trail
AUSTRIA
Arnoweg Trail
https://en.wikipedia.org/wiki/Arno_Trail
https://www.traildino.fr/trace/continents-Europe/countries-Austria/trails-Arnoweg
ITALY
GTA
https://gta-trek.eu/
https://www.cicerone.co.uk/italys-grande-traversata-delle-alpi
Sentiero Italia
https://sentieroitalia.cai.it/
Via Francigena
https://www.viefrancigene.org/en/
https://www.cicerone.co.uk/walking-the-via-francigena-pilgrim-route-part-1
Way of St-Francis
https://www.viadifrancesco.it/en/
https://www.stfrancispilgrimages.com/the-way-of-st-francis.html
https://www.cicerone.co.uk/the-way-of-st-francis
FRANCE
GR 6
https://www.gr-infos.com/en/gr6.htm
GR 9
https://www.gr-infos.com/en/gr9.htm
GR 3
https://www.gr-infos.com/en/gr3.htm
SPAIN
GR 1
https://www.senderosgr.es/es/gr-1-sendero-historico/
https://es.wikipedia.org/wiki/GR-1
https://www.cicerone.co.uk/spains-sendero-historico-the-gr1
GR 160
https://en.caminodelcid.org/
https://fr.wikiloc.com/itineraires-tout-terrain/gr-160-camino-del-cid-8220906
GR 7
https://caminaireinenglish.wordpress.com/
https://en.wikipedia.org/wiki/GR_7
https://www.cicerone.co.uk/trekking-the-gr7-in-andalucia
GR 131
https://www.cicerone.co.uk/trekking-in-the-canary-islands
PORTUGAL
GR 22
https://aldeiashistoricasdeportugal.com/en/oferta-turistica/percursos/grande-rota-walking/
SLOVENIA
Slovenian Mountain Trail
https://www.slovenska-planinska-pot.si/index_en.php
https://tramposaurus.com/slovenian-mountain-trail/
https://thru-hiking.com/trail/slovenian-mountain-trail/
https://www.cicerone.co.uk/the-slovene-mountain-trail
CROATIA
https://cldt.hr/en/trail/
https://www.facebook.com/cldt.hr/
https://faroutguides.com/croatian-long-distance-trail-map/
https://thetrek.co/croatian-long-distance-trail/
ROMANIA
https://www.viatransilvanica.com/en/
BULGARIA
Kom Emine
https://kom-emine.bg/?lang=en
https://inasearchofbalance.com/2020/09/07/kom-emine/
https://www.penguintravel.com/Offer/GuidedWalks/1578/TheGreatBalkanTrail-Kom-Emine.html
HUNGARY
National Blue Trail
https://www.kektura.click.hu/frame002.htm
https://en.wikipedia.org/wiki/National_Blue_Trail
GREECE
https://thepindosway.com/
https://www.cicerone.co.uk/trekking-in-greece
CYPRUS
https://thru-hiking.com/trail/e4/
https://www.justaboutcyprus.com/media/files/european-long-distance-path-e4.pdf
Information about other hikes in first comment