Routes

Planner

Features

Updates

App

Get the App

Valverde Tunnel – Valverde Tunnel loop from Castro-Urdiales

Valverde Tunnel – Valverde Tunnel loop from Castro-Urdiales

Hard

riders

Valverde Tunnel – Valverde Tunnel loop from Castro-Urdiales

03:38

45.8km

1,200m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 1, 2026

Waypoints

Start point

Bus stop

Get Directions

638 m

Bosque de Valverde

Forest

1.05 km

Valverde Tunnel

Highlight • Structure

Incredible path for pedestrians and cyclists (with one lane for each direction) along the old train route. It is 397 meters long and takes two minutes or less to cycle through.

Translated by Google •

Tip by

30.0 km

Old Castro-Urdiales Railway Tunnel

Highlight • Structure

The old railway tunnel that linked Castro-Urdiales and Translaviña was an enormous project in its day.

Today it serves so that you can enjoy a spectacular tour among nature on wheels.

Translated by Google •

Tip by

42.5 km

Church of San Julián de Santullán

Highlight • Religious Site

The church of San Julián is from the beginning of the s. XVI. Several reforms have been carried out, although it keeps its old Gothic layout. Inside we can see …

Translated by Google •

Tip by

44.6 km

Valverde Tunnel

Highlight (Segment) • Structure

A 400-meter tunnel that connects Mioño with Castro Urdiales, crossing the slopes of the Cueto hill. It is used by both pedestrians and cyclists. From Castro Urdiales to Mioño there …

Translated by Google •

Tip by

45.8 km

End point

Bus stop

Way Types & Surfaces

Way Types

20.7 km

12.2 km

7.01 km

3.30 km

2.35 km

158 m

< 100 m

Surfaces

31.5 km

10.5 km

2.49 km

941 m

404 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Friday 4 September

26°C

19°C

-- %

Additional weather tips

Max wind speed: -- km/h

to get more detailed weather forecasts along your route

Comments

Want to know more?

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Report restricted access

Nearby routes

Hard

4.8

A & C Tunnel Entrance – El Sobaco Tunnel loop from Sestao

02:54h

48.4km

740m

Hard

View of Bilbao and Rest Area – Hirumugarrieta Megalithic Site loop from Basarrate

02:26h

29.5km

690m

Hard

Hirumugarrieta Megalithic Site – View of Bilbao and Rest Area loop from Elotxelerri

03:36h

43.5km

1,000m

Hard

5.0

El Sobaco Tunnel – A & C Tunnel Entrance loop from Peñota

02:54h

47.3km

720m

Hard

4.8

A & C Tunnel Entrance – Old Bridge of Balmaseda loop from Indautxu

05:47h

94.7km

1,220m

Hard

El Sobaco Tunnel – A & C Tunnel Entrance loop from Sestao

03:27h

43.0km

1,020m

Hard

5.0

Alto de LA-1 (395 m) – Oriñón Bay loop from Castro-Urdiales

03:46h

51.1km

830m

Hard

El Sobaco Tunnel – Lago de Galdames loop from Muskiz

05:04h

67.9km

1,300m

Hard

5.0

Forest Trail Near Bilbao – Kortatxikieta Picnic Area loop from Etxebarri

02:04h

23.8km

530m

Hard

5.0

Geltoki Restaurant – Arenao Bridge loop from Artzentales

02:54h

45.1km

740m

Hard

4.3

Riverside Cycle Path to Bilbao – Views of the Bilbao estuary loop from Santimami / San Mamés

02:27h

34.6km

760m

Hard

Gravel trail – Picnic area in Gangoiti Forest loop from Deustu

02:00h

25.4km

660m

Valverde Tunnel – Valverde Tunnel loop from Castro-Urdiales

Valverde Tunnel

Old Castro-Urdiales Railway Tunnel

Church of San Julián de Santullán

Valverde Tunnel

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️