Pyrenees – GR 10 and GR 11 compared, from the Atlantic to the Mediterranean

The Pyrenees offer two long cross-country trails between the Atlantic and the Mediterranean: the French GR 10 and the Spanish GR 11 , also known as the Senda Pirenaica. Both pass through high passes, villages and protected natural areas. The choice is not just about kilometers. It also affects water planning, accommodation, regulations and how independent you need to be.

This is part 3 of 8 in the World's Hiking Trails series. After the Alps and the Dolomites and South Tyrol, we move on from mountain range to mountain range.

GR 10 or GR 11 – which side is right for you?

The numbers vary with route choice, variants and stage division. The GR 10 does not have a single set total number or official stage plan for the entire route. FFRandonnée publishes regional topo guides and is responsible for the trail markings. Use current topo guides and local information – not a single total number. A complete walk can take approximately 30–70 days depending on pace, rest days and detours.

The GR 11 is usually planned in 46–47 stages, but even here the division is a planning model, not a promise that every day will suit everyone. Both routes require good fitness and experience of multi-day hiking. The GR 10 generally has more villages and gîtes along the way. On the GR 11, the distances between reliable water sources can be an important part of the day's plan.

Seven destinations to know in the Pyrenees

1. GR 10 – the French Transept

The GR 10 runs from Hendaye on the Atlantic to Banyuls-sur-Mer on the Mediterranean. It passes through villages, forests and mountainous terrain, with gîtes d'étape and other accommodation that often make the logistics more manageable than on some Spanish sections. This does not mean that the trail is easy: several passes and long climbs require endurance. Plan your days with a topo guide, altitude meter and accommodation in mind.

2. GR 11 – Pyrenean Path

The GR 11 starts at Cabo de Higuer near Hondarribia and Irun and ends at Cap de Creus in Catalonia. It is usually given as around 820–850 kilometres. The terrain is often drier and more exposed to the sun than on the French side. Summer springs can be dry, so check water levels in the current guide, refill when you can and carry more than you think you will need. Villages, hostels and refugios are located along the route, but opening times and sleeping accommodation vary with the season.

3. HRP – a demanding high alpine variant

The Haute Randonnée Pyrénéenne, HRP, follows a more high-alpine and partly roadless route that crosses the border between France and Spain. It is not marked in the same way as the GR 10 and GR 11. Route selection, navigation and sometimes snowfields make it an option for experienced hikers with good map and compass skills. Tents are usually needed for flexibility, but this does not give the right to camp anywhere. The HRP should not be confused with the two marked cross-trails.

4. Parc national des Pyrénées and Gavarnie

The GR 10 passes through French national park areas. The Cirque de Gavarnie, with its vast natural mountain amphitheater and waterfall, is a famous excursion destination and part of a World Heritage Site. From the village of Gavarnie, there are also easier day trips for those who want to experience the landscape without making a long journey. The national park has special bivouac rules; read the section on access before planning a night outdoors.

5. Ordesa and Monte Perdido

On the Spanish side, the Ordesa Valley is a classic. From Pradera de Ordesa, trails lead to Faja de Pelay and views over the valley. The park is a World Heritage Site and very popular, especially during high season. It has its own rules for overnight stays, and camping is basically prohibited. Check the official park regulations and any booking requirements before you set off.

6. Aigüestortes in Estany de Sant Maurici

Catalonia's only national park offers marked trails between lakes, forests and mountains. Here, refugios are important for those hiking longer distances. Check trail status, cabins and the park's rules in advance: camping is regulated and free camping should not be assumed. Water from springs is not automatically drinkable; follow the park's advice and use appropriate purification.

7. A shorter classic: Lac de Gaube

If you want to start with a day trip, Lac de Gaube near Cauterets is a concrete option. The regular GR 10 hike from Pont d'Espagne is indicated by local trail information to be approximately 4.9 km and 259 metres in elevation one way ; the time and length of the tour depends on the variant and route chosen. Check current information with the Cauterets tourist office or Rando Vallées de Gavarnie before starting.

Rules and access: do not rely on the right of public access

The Pyrenees do not have the right of way like in Sweden, Finland or Norway . The starting point is that the land is owned, protected areas have their own regulations and camping is the exception rather than the rule.

In the Parc national des Pyrénées, bivouacs in the core area of the park are only allowed between 7pm and 9am , and only at least an hour's walk from the park boundary or from a road. Camping outside these conditions is prohibited. On the Spanish side, the rules differ between the Basque Country, Navarra, Aragon and Catalonia. In national parks such as Ordesa y Monte Perdido and Aigüestortes, camping is generally prohibited; bivouacs may be permitted in certain areas and under certain conditions. Fines may apply.

Always check the current regulations for each region and protected area. Burning is prohibited or severely restricted in protected areas. Only use an enclosed kitchen where it is expressly permitted; in cases of high fire risk, this may also be prohibited.

Season, accommodation and practical planning

Mid-June to late September is often the most useful period, but conditions vary from year to year. In June, snow may remain on passes above about 2,000 meters. Such passes may require crampons and knowledge of snow conditions; do not enter snowfields without proper experience. In high summer, lower, south-facing sections can instead become very hot. Afternoon thunderstorms and rapid weather changes are common reasons to start early and keep an eye on the forecast.

Accommodation includes French gîtes d'étape, Spanish refugios, hostels and village hotels. Book well in advance for July and August, and don't expect everything to be open in June. Half-board is common at refugios. Check if sheets or sleeping bag sheets are required; policies vary between accommodations.

Safety: water, weather, dogs and navigation

On the GR 11, water sources should be treated as a planning issue. Sources may be dirty or unsuitable for drinking. Check the current guide, fill up before long runs and bring water purification. On both routes, a map, compass and offline maps are needed: markings may be worn, hidden by snow or difficult to follow in poor visibility.

The Pyrenees have reintroduced brown bears. They are few and shy, and the risk of confrontation is very low. Store food safely, do not leave leftovers, and follow local advice.

Sheepdogs, often called patou , guard sheep on pasture and may perceive walkers as a threat. Keep your distance, walk calmly past, avoid direct eye contact and never pet the dog. Keep your own dog on a lead around flocks. Do not force your way through the flock – wait or take a quiet detour.

In case of emergency, the European emergency number is 112. Make sure your insurance explicitly covers mountain rescue and helicopter.

Equipment: choose between cabin and bivouac

Staying in a gîte or refugio often allows you to carry less. Bivouac requires a tent or tarp, sleeping gear and more self-sufficiency – but bivouac is only an option where the rules allow it. Choose a backpack for packing volume and comfort, not just weight. Bring hiking poles, sun protection, water containers and purification.

Your sleeping bag or quilt needs to perform for cold nights at altitude, even in the middle of summer. Look at the comfort temperature and fill weight, not just the down's CUIN value. Our guide to bird down in sleeping bags explains the difference. A sleeping pad that is too light can let in ground chill and impair recovery.

See HikingStore's range of tents , backpacks , sleeping pads and sleeping bags . The summer-adapted packing list is a useful starting point – but always adapt to the route, season and type of accommodation.

GR 10 is often suitable for those who want the villages and gîte logistics of the French side. GR 11 attracts with Spanish terrain and requires more careful water planning. Regardless of the choice, the best equipment is the one that works reliably when the weather changes. In the next part we move on to Corsica and the Mediterranean islands , with GR 20 and GR 221 on Mallorca.

Sources

• FFRandonnée: GR 10, la grande traversée des Pyrénées
• Pyrénées National Park: rules for bivouacs and camping
• Ordesa y Monte Perdido: rules for staying overnight
• Aigüestortes: visiting rules and recommendations
• Cauterets: Lac de Gaube
• FAM: GR 11 – Senda Pirenaica
• Cicerone: comparison between GR 10, GR 11 and HRP