The Montes de Hierro Greenway (Vía verde de los Montes de Hierro) completes the magnificent network of cycle routes around Bilbao, in Spain’s Basque Country. The former railway line explores a spectacular mountainous region where dense green forests conceal a rich industrial and mining heritage.

The route starts at Traslaviña station, which can be reached by train from Bilbao. The 50-kilometre (31 mi) greenway runs through the mountainous Basque coast to the sea. Along the way, you'll pass structures reminiscent of the region's mining past, such as old loading bays, railway stations, bridges and tunnels.

Completing the Montes de Hierro Greenway in a single day is possible for any cyclist with a reasonable level of fitness. However, in this Collection, I've divided the route into two stages so that it’s accessible to all ages and abilities, and will allow you to fully appreciate the magnificent landscape you’ll be exploring.

The stages have been divided so that you can return to Bilbao by train at the end of each day, which makes finding accommodation easy and allows you to travel light. At the end of the itinerary, I've added a bonus stage that allows you to discover another cycle route in the region.

Another attraction of this route, apart from the fact that it passes through beautiful natural and rural surroundings, is that it links the mountains to the coast. You can end your adventure by cycling along Playa de la Arena beach, climbing the cliffs and gazing out over the Bay of Biscay. After that, all you have to do is return to Muskiz station along the cycle paths.

As the route follows tarmac roads and dirt tracks, I'd recommend a gravel bike or mountain bike. Don't forget to bring spare parts and tools.

The ideal season for this adventure is from late spring to early autumn. Each season has its own charm. In spring, the vegetation starts to grow and the flowers are in full bloom. In summer, the temperature is warm, the days are long and you can swim at the beach. In autumn, the forests are ablaze.

Regardless of the season, don't forget to check the weather forecast and always pack a waterproof windbreaker. The Basque coast is so green because rain is frequent year-round.

Enjoy the Montes de Hierro Greenway.