Plan to spend a few days walking between Santander and Oviedo chasing pilgrims. Leaving from Madrid and spending little.
This French man we crossed paths with was a pro pilgrim.

Someday I would like to reach Santiago de Compostela with lots of blisters on my feet, but this year I did not have enough free days for such a long walk. Still, I wanted to escape Madrid a few days before summer ended and walk through green landscapes with friends. Googling and asking around, especially my cousin Amancio, I designed a 4 day plan along the Northern Way, which worked quite well. Here is a summary for the caged people of Madrid who ask me.
There are about 200Km between Santander and Oviedo. The normal thing is to walk between 15 and 20K a day, so it would take you more than 10 days. The idea of picking these two cities is because both capitals connect by direct train to Madrid. They also connect to each other by Feve, a cheap local train that stops in almost every town between the two cities. This allows all the flexibility in the world to adapt the route to your mood as you go. It also gives you a simple escape plan if something unexpected happens.
You could also start in the Basque Country instead of Cantabria. But the Cantabrian section usually goes closer to the coast. I really wanted to see the sea, because there is no sea in Madrid, damn it.
Day 1 / Madrid -> Santander -> Unquera
13km walking
There is a train that leaves Madrid at 8 in the morning and arrives in Santander at 13:44h. If you buy it a couple of weeks in advance it costs about 26€. If you buy it a week before it can reach 50€. From the same Santander station the Feve train leaves at 16:10 and arrives in Unquera at 18h.
If you have an extra day, it might be worth leaving the day before to see Santander. We left Madrid a day early, around 14h, and arrived around 18h. Eating pintxos, the Botin Centre, and the Sardinero are nice. But maybe you are not looking for that on this type of trip.


Santander



Unquera is relatively small. We stayed in a 2* hotel that was clean. The room for 3 people cost us 61€, about 20€ per person.
Once you leave your stuff at the hotel, try to keep your backpack under 6 or 7 kilos. In September there is still enough light to go to Pesués (the border between Cantabria and Asturias), climb to the viewpoint to see the Tina Menor estuary, which is spectacular, and return. In total it is about 13Km of breathing fresh air with a taste of eucalyptus.









Day 2 / Unquera -> Pendueles
14km walking
From here, the idea is to follow the yellow arrows of the Camino de Santiago. Right after leaving Unquera, next to the bridge, you find the signs. In between you will pass through Colombres and La Franca where you start to approach the sea again, to reach the area of the blowholes and cliffs. Beautiful. You walk slowly because there is not even a real path. You dodge thorns and cow poop.






Around 16h or 17h you should arrive in Pendueles. We stayed at the Albergue Bar Castiellu. Araceli, the owner, renovated it a few years ago and they keep it spotless. The bed costs 15€. If you want, she makes a very decent dinner menu for 8€. A kilometer from the hostel there is a campsite facing the beach with a bar that has great views. It is worth going there for a drink and for breakfast the next day.
Day 3 / Pendueles -> Poo de Llanes
20km walking
Back to following the arrows. The route is very similar to the previous day, next to the sea. You will pass by the Arenillas blowholes. We stopped to eat in Andrín a tasty cachopo made of cecina and Cabrales cheese. Then we went to the viewpoint where they filmed the cliff scenes from El Abuelo. We continued walking next to an elevated golf course until Llanes.







It happened to be the town festival and there were almost no hostels. So we went to Poo de Llanes 3km away. It turned out to be a hostel house with very good vibes from the owners, David and Ivan. It is right next to a beach that National Geographic says is among the 25 best in Europe. The hostel also cost 15€ a night. They make you boiled or fried eggs from their chickens for a couple of euros and a very tasty yogurt from local cows.



Day 4 / Poo de Llanes -> Oviedo -> Madrid
At 11:25 a Feve train passes through Poo de Llanes and leaves you in Oviedo at 14h. In between you see the towns you would pass through if you followed the path: Ribadesella, Mieres, Arriondas... The train back to Madrid leaves at 18:30h. The station is right next to the center. So you have plenty of time to walk around the center, see the Campoamor theater from the outside, the Woody Allen statue, the cathedral, and spend some time in the Bombé park.


On average we crossed paths with a couple of pilgrims every hour. It seems that in September and on the Northern Way things are not very crowded. Most go in pairs and almost none stopped to start a conversation with us. We only got to interact more in hostels.
Map and Figures
Walk 15 to 20Km a day.
Keep your backpack under 5 or 7 Kg. 10% of your weight, they say.
Hostels at 15 to 20€ a day.
Eating supermarket sandwiches for about 3€, daily menus in restaurants for 8 to 10€.
Boots Quechua 35€ and mountain trekking pants 30€ from Decathlon.
Round trip tickets Madrid, Santander, Oviedo between 50 and 80€.
Feve tickets 6 to 8€.