Camino del Norte · Stage 21

Avilés → Muros de Nalón

Local roads, tracks and small woodlands through inland Castrillón, ending at San Martín Castle by the Nalón estuary.

Distance
21.2 km
Elevation
+549 m / −419 m
Time
About 5 h 15 min
Difficulty
Moderate
Best season
Spring to autumn

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Frequent elevation changes down to the Nalón estuary

Gronze.com describes this stage as "short, mostly on paved tracks, with frequent though generally moderate elevation changes." The Camino leaves Avilés via San Cristóbal and enters the municipality of Castrillón, combining short hill sections with pastoral landscapes before descending toward the Nalón valley.

The official route passes through La Plata (with an information point), Piedras Blancas (the stage's main service hub), La Lloba and Santiagu'l Monte, though a coastal variant via Salinas and San Martín de Laspra offers "more contact with the sea." The day's great cultural landmark is San Martín Castle, on a promontory overlooking the Nalón estuary — not open to visitors inside, but of great scenic value.

What the terrain is like, kilometre by kilometre

Terrain

A short stage with frequent but moderate elevation changes, mostly on inland paved tracks.

Scenery

Pastures and small woodlands in the municipality of Castrillón, ending with the Nalón estuary and San Martín Castle.

Path type

Mostly paved local roads, with some rural track and path sections.

Villages

San Cristóbal, La Plata, Piedras Blancas, La Lloba, Santiagu'l Monte and Soto del Barco.

Water points

Good in Piedras Blancas, the stage's main service hub.

Shade

Moderate, somewhat better in the small inland woodland stretches.

Traffic

Present on the paved local roads, generally low volume.

Key tip

A coastal variant via Salinas offers more contact with the sea: consider it against the official inland route.

What to pack, travel insurance and getting around

One single guide with the recommended gear, useful services (insurance, eSIM) and transport options for the whole Camino.

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Accommodation in Muros de Nalón

Muros de Nalón offers a couple of small, charming albergues. Indicative price per night.

Reference albergue

La Naranja Peregrina

€20

A 10-bed albergue open March to October, under new management since 2025. It offers communal dinners and breakfasts, with service in Spanish and English.

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Alternative

Casa Carmina

€20–85

A tourist albergue with 10 beds plus 5 rooms, open April 1 to October 15.

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Piedras Blancas, the stage's service hub

Piedras Blancas offers the best selection of bars and shops before reaching Muros de Nalón.

Piedras Blancas

Local bars and shops

The stage's main supply point, roughly at the midpoint of the day.

Stops with history on this stage

Muros de Nalón

San Martín Castle

On a promontory overlooking the Nalón estuary; not open to visitors inside, but its surroundings are one of the day's great scenic attractions.

Coastal variant

Salinas and San Martín de Laspra

An alternative to the official route with more contact with the sea, for those who prefer the coast to the interior.

Midway

Piedras Blancas

The day's main service hub, after a historic diversion that stopped routing through Salinas.

If you have time and want more coastline, the Salinas variant is an attractive option against the official inland route.

Getting here and getting back

Starting here: Avilés has train (Renfe and FEVE) and bus connections to Gijón, Oviedo and the rest of Asturias.

Heading back from Muros de Nalón: there is a bus connection to Avilés and the rest of the region.

Worth knowing before this stage

It's a short, accessible stage

At 21.2 km with moderate elevation change, it's a good chance to give your legs a rest.

Consider the coastal variant

If you prefer more contact with the sea, the Salinas variant is a genuine alternative to the official route.

Stock up in Piedras Blancas

It's the main service hub before reaching the small town of Muros de Nalón.

Book ahead in Muros de Nalón

Both available albergues are small (10 beds each).

Don't ruin this stage

Not booking ahead in Muros de Nalón

With only 10 beds per albergue, it's worth securing a bed in advance, especially in high season.

Dismissing the coastal variant without considering it

If you like the coast, it's worth comparing the Salinas variant with the official inland route before deciding.

Skipping Piedras Blancas

It's the best point to stock up before the small final town.

Expecting to visit San Martín Castle

It's not open inside: enjoy it as part of the scenery, not as a guided visit.

Everything you wonder before this stage

How many kilometres is it from Avilés to Muros de Nalón?
About 21.2 km, with an accumulated elevation change of 549 m of ascent and 419 m of descent.
Is this stage hard?
No: it's a short stage of moderate difficulty, with frequent but gentle elevation changes.
Is there a coastal variant?
Yes, via Salinas and San Martín de Laspra, with more contact with the sea than the official inland route.
Where can you sleep in Muros de Nalón?
At La Naranja Peregrina (10 beds, €20) or Casa Carmina (10 beds + 5 rooms, €20–85), both small.
What can you see on this stage?
San Martín Castle, on a promontory overlooking the Nalón estuary, though it's not open to visitors inside.
Where is the main service point?
In Piedras Blancas, roughly at the midpoint of the stage, with the best selection of bars and shops of the day.

Activities and excursions in Santiago de Compostela

Tour

Old town walking tour

Small-group walking tour through the old quarter of Santiago with a local guide.

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Tour

Cathedral and Pórtico da Gloria

From €22

Guided visit to the Cathedral with access to the museum and the restored Pórtico da Gloria.

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Gastronomy

Queimada show and tasting

From €15

The traditional flaming Galician spirit, explained in a show designed for pilgrims.

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Excursion

Finisterre, Muxía and Costa da Morte

From €45

The three unmissable stops of the "end of the world" in one full day from Santiago.

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Our top recommendation

Brunch · Café de especialidad · Cócteles

Bonsai Café

You still have stages ahead, but by the time you reach Santiago you’ll have earned a good breakfast. At Bonsai Café, right in the city centre, we’re waiting with weekend brunch, Berraco by Bou specialty coffee, and the best cocktails to toast your arrival.

📍 Avda. Rodrigo de Padrón 2, Bajo · 15702 Santiago de Compostela
🕙 Mon–Thu 09:00–17:00 · Fri 09:00–23:30 · Sat 09:30–23:30 · Sun 09:30–21:00
📞 +34 689 89 02 49