A fascinating example of sustainable tourism in Spain is the conversion of disused railway lines into cycling and walking routes known as the Greenways, or Vías Verdes. Across some 1,677 miles of former track, 125 individual Greenways offer a variety of experiences for adventure travelers, cyclists and walkers—from short urban promenades to long rural trails that showcase Spain’s diverse landscapes.
One notable route in the Murcia region is the Northwest Greenway, which follows the former railway that linked Murcia with Caravaca de la Vera. The trail stretches 47.7 miles and features converted train stations now used as hostels. Along the way, it skirts the River Mula, traverses an area of badlands, and climbs into pine forests and almond groves, offering a mix of dramatic and pastoral scenery.
In the north, the Vasco-Navarro Railway Greenway covers about 63 miles through a landscape of grain fields, mountains, rivers and lush forests. Popular with walkers and hikers, this route crosses former tunnels and viaducts and winds through several small, picturesque villages, making it ideal for those who enjoy varied terrain and cultural stops.
The Sierra Greenway in Cádiz province runs 22.3 miles from Puerto Serrano to Olvera along the banks of the River Guadalete at the foot of the Iberian Mountains. Uniquely, this route was built with stations, tunnels and viaducts, but no trains ever ran on it—the project was halted by war before tracks were laid. The Sierra Greenway rewards visitors with striking scenery, including the Peñón de Zaframagón, home to one of Europe’s largest colonies of griffon vultures.
Across Spain, Greenways provide safe, traffic-free corridors that invite exploration on foot or by bike while reusing historical infrastructure in an environmentally friendly way. They connect towns and natural areas, support local hospitality and conservation efforts, and offer accessible outdoor recreation for a wide range of fitness levels. Whether seeking peaceful riverside rides, challenging forested climbs or cultural stops in small villages, Spain’s network of Vías Verdes presents a sustainable and scenic way to discover the country.