Europe's long-distance walking works because of the waymarking. National networks, maintained by federations and marked to consistent standards, are why you can walk for weeks with a guidebook and no navigation skills.
The systems
GR (Grande Randonnée) — red-and-white flashes, originating in France and used across Belgium, Spain and the Netherlands. Tens of thousands of kilometres, maintained by national federations, passing through villages with accommodation.
A crossed red-and-white flash means wrong way, which is the single most useful marking to recognise.
Switzerland — yellow signposts giving walking times to a national standard, accurate to within minutes. Yellow diamonds for easy paths, white-red-white for mountain paths, white-blue-white for alpine routes.
Austria and Germany — systematic, with numbered routes and difficulty markings.
Italy — CAI numbers painted on rocks and trees, red and white.
The UK — acorn symbols on national trails, plus a general right of way network with signposts.
E-paths — twelve continental routes designated by the European Ramblers' Association, thousands of kilometres each and made up of existing national trails. Nobody walks them end to end; they are useful as a way of linking networks.
The hut-to-hut routes
Where Europe is genuinely unmatched.
Alta Via 1, Dolomites — about a week, non-technical, the best food of any hut route.
Tour du Mont Blanc — eleven days through three countries.
Haute Route, Chamonix to Zermatt — twelve days, sustained, higher.
Stubai and Zillertal high routes, Austria.
Alpine Pass Route, across Switzerland.
All require huts booked months ahead for July and August. September is quieter and still open.
The long ones
| Route | Length | Note |
|---|---|---|
| GR20, Corsica | 180 km | Hardest waymarked route in Europe |
| GR10, Pyrenees | ~900 km | Coast to coast, French side |
| GR5, Alps | ~600 km | Lake Geneva to Nice |
| Kungsleden, Sweden | 440 km | Arctic, huts, almost empty |
| Camino Francés | 780 km | Villages, albergues, five weeks |
| GR34, Brittany | ~2,000 km | Entire coastline |
The underrated
The Kungsleden in Swedish Lapland — Arctic wilderness, a hut network, and almost nobody outside Scandinavia walks it.
Peneda-Gerês in Portugal and the Picos de Europa in Spain, both quieter than their quality warrants.
The Julian Alps in Slovenia, with Triglav and a good hut system at a fraction of Swiss prices.
The Transcaucasian Trail in Georgia and Armenia, developing fast.
The Rota Vicentina on Portugal's southwest coast, best walked in winter.
Rescue and clubs
Rescue may be charged to the individual in several Alpine countries and can run into thousands.
Alpine club membership — Austrian, German, Swiss, Italian — frequently includes rescue cover across several countries plus hut discounts, and reciprocal agreements mean one membership works widely.
It is often cheaper than a specialist insurance policy.
Practical
Season for high routes is late June to September, with snow on passes into July.
Maps: IGN in France, swisstopo in Switzerland, Tabacco in the Dolomites, Ordnance Survey in the UK — all excellent at 1:25,000.
Book huts as early as bookings open. This is the constraint, not the walking.