Peneda-Gerês hiking permits: which trails need ICNF approval

Most marked trails in the Peneda-Gerês National Park need no prior permit. The park authority's September 2025 list of signposted trails says that many routes can be walked without ICNF authorization, that some sections inside total protection areas can be walked without it only by groups of up to 10 or 15, and that several stages burned in wildfires should not be walked at all. Solo walkers, couples and small groups are inside the limits on almost every route. The Peneda-Gerês travel guide explains the park, and the Portugal guide shows how it fits into a northern trip.

This page is for people who want to know exactly where the rules bite. It is built on that ICNF list, which is the only official source read for it, and it says plainly what it does not know: camping rules, fees and the notice period for authorization were not verified, so they are not stated. For trails, sights and bases, see things to do in Peneda-Gerês and the Gerês or Peneda comparison.

The park is divided into protection levels, and the strictest are the total protection areas, where ICNF applies the tightest rules to protect habitats and species. A trail that crosses such an area is not closed. Instead, the list states whether it can be walked without prior authorization, and by how many people. That is why one route allows groups of up to 10, another up to 15, and a third carries no limit at all.

Two things follow. First, an individual or a small party almost never needs to ask. Second, a school group, a walking club or a guided tour with many participants may need approval, and the person organizing the trip should check the route in the list before booking. A guide or tour operator is normally responsible for this, but you should ask whether the group size is within the limit for the route.

The list also reminds readers that trails are run by different bodies: the park itself, the municipalities of Melgaço, Arcos de Valdevez, Ponte da Barca, Terras de Bouro and Montalegre, and the development association ADERE-PG. It recommends contacting the promoter of each route for its current status, which is good advice, because maintenance and closures are handled locally.

The table below shows a selection of routes from the September 2025 list, with the length and authorization note as printed. It is a guide to the pattern, not a substitute for the list itself, which covers dozens of trails across the park.

On the Gerês side, the Trilho da Preguiça (an interpretive route through oak woods, starting near the Preguiça forest house at Vilar da Veiga) and the Trilho Interpretativo das Silhas dos Ursos (starting near the Junceda forest house) are both 5 km circuits that can be walked without authorization in groups of up to 10. The Geira, the Roman road, is a 10 km linear route starting at Campo do Gerês or Portela do Homem, and its stretch in a total protection area follows the 10-person limit.

Longer routes lean on the 15-person limit. The Trilho do Sobreiral da Ermida do Gerês, a 13.3 km circuit run by the Ermida village tourism association, and the GR 50 stages 2, 13, 14 and 18 carry it, while GR 50 stage 3 carries the 10-person limit. The Trilho dos Currais (10 km from Vila do Gerês) and the Trilho da Águia do Sarilhão (9 km from Campo do Gerês) are listed with no limit.

On the Peneda side, the Romeiros da Peneda routes from Sistelo (18.7 km) and from Soajo (15.3 km) need no authorization, while the Rota dos Bicos (18.7 km) is limited to groups of up to 10. In Melgaço, several loops around Castro Laboreiro are open without a limit, while the 25.7 km Trilho do Megalitismo has the 10-person limit. In every case, if you hike with a larger group, check the specific route and ask the promoter.

The most useful part of the list for most walkers is the warnings. It notes that GR 50 stages 7 to 10, from Soajo to Brufe, were hit by wildfire and should not be walked, and that the initial road section of stage 11 runs beside the burned area but was not directly affected. It marks the GR 34 Serra Amarela interpretive trail, a 35 km circuit, as burned and not to be walked, and it gives the same note to several short trails in Ponte da Barca, such as the Parada mills trail, the Britelo megalithic trail and the Entre Ambos-os-Rios trail.

Two Terras de Bouro routes, the Trilho dos Miradouros (10 km from Vila do Gerês) and the Trilho de S. Bento (14 km), are marked as not advised, and the list gives no reason. Treat that as a reason to look elsewhere unless the promoter tells you otherwise.

Why this matters: a long-distance route on a map can look continuous, while the list says part of it is closed in practice. If you plan a multi-day crossing, do not rely on a printed guide or an old GPS track. Check the stage you want against the current list and with the route promoter, and be ready to shorten or reroute. The park's fire damage is also a reminder to check the weather and the national fire warnings in summer, since fire risk can close forest roads and tracks with no notice.

If your group is larger than the limit on your route, or you plan an activity not covered by the list, contact the park. The list gives the park office at Avenida António Macedo, 4704-538 Braga, telephone +351 253 203 480, and the email [email protected]. The Terras de Bouro tourism offices in Terras de Bouro, Rio Caldo and Vila do Gerês can also direct you.

Write well ahead and include the route, the date, the number of participants and the contact details of the organizer. The notice period is set by ICNF and was not verified here, so ask when you write and plan for a reply before you pay for a guide, a bus or a hotel. If you travel with a licensed local operator, ask them to confirm that they have handled authorization.

Keep a copy of any approval on your phone and on paper, and carry it on the trail. If the park changes a route's status, the new rule applies even if you booked earlier.

Choose by group size and by how much logistics you want. A couple or a small family with a first day in the park can use the 5 km loops on the Gerês side, which sit under the 10-person limit and need no email. A confident walker with a full day can link a longer circuit such as the 10 km Trilho dos Currais, which the list shows without a limit, and add a forest stop by car afterward.

A walking club or a tour with 12 to 15 people should look at the 15-person routes, such as the Sobreiral da Ermida trail, before it looks at the 10-person ones, and should ask the promoter whether a guide is required. A school group or a larger party needs the park office from the start, since almost every limit in the list is 10 or 15.

Multi-day walkers have the hardest planning. The GR 50 is split into 19 stages across the park and beyond, and the list tells you which stages you can walk without authorization and which are burned. Build the itinerary from the stages that are open, and keep the burned section in mind when you book luggage transfers and beds, since a gap in the route can force a detour by road. Whatever you choose, ask the promoter of the route for the latest status a few days before you go.

The list covers trails only. The Mata da Albergaria has its own circulation rules and access fee under a national ordinance, Portaria 31/2007, which was not read for this page. The Cascata do Arado is a viewpoint, not a swimming spot, because the municipality discourages bathing there after serious accidents. For camping, check ICNF's current rules before you plan a bivouac, and book a campsite or guesthouse if in doubt, since this page did not verify them.

For logistics, read the things to do page for the stops, and the Gerês or Peneda page for where to sleep. If you want a city stop before or after the trail days, Braga and Guimarães are the closest.

Keep the ICNF reply and any authorization saved offline in case you are asked for it, since signal can fail at a trailhead. An eSIM for Portugal covers booking and weather pages in towns, and travel insurance covers medical care and cancellations. For car options, see getting around Europe.

The first is assuming a permit is needed for every trail, when most small parties need none. The second is booking a big group for a route with a 10-person limit without asking. The third is using an old guidebook or GPS track for a stage that burned. The fourth is relying on a route marked as not advised. The fifth is leaving it too late to email ICNF, and the sixth is treating this page as the last word, since trail status changes and the list is dated September 2025.