Puig Castellar and Besòs River Loop

This loop combines two very different areas. While the Besòs River section is generally flat and easy, the ascent towards Puig Castellar involves rugged terrain, steep climbs, and technical sections. The full loop is considered a hard mountain bike ride, requiring good fitness and advanced riding skills. Beginners might find the Puig Castellar portion challenging and may need to push their bikes in some sections.

The route offers a dramatic contrast. The Besòs River section features mostly paved paths with some dirt and gravel, ideal for casual cycling. As you head towards Puig Castellar, the terrain becomes much more rugged, with hard climbs, technical descents, roots, and rock gardens, typical of the Serralada Marina area.

You'll experience varied scenery. Along the Besòs River, you'll enjoy urban river landscapes, green spaces, and a cool ecosystem popular for migratory birds. As you climb towards Puig Castellar, you'll find the historical Iberian Settlement of Puig Castellar and magnificent panoramic views of Barcelona and the coastline from the View of Barcelona from Poblat Ibèric Watchtower.

The best time to ride this loop is generally during spring and autumn when temperatures are milder. Summer can be very hot, especially on the exposed climbs to Puig Castellar, while winter can bring cooler, potentially wet conditions. Always check the weather forecast before you go.

Parking options are available near the Besòs River Park in Santa Coloma de Gramenet, which is a good starting point for the loop. Look for street parking or designated parking areas in the vicinity of the river park or near Can Zam.

Yes, dogs are generally allowed on the trails, but they must be kept on a leash, especially in populated areas along the Besòs River and within the Parc de la Serralada de Marina. Always ensure your dog is well-behaved and that you clean up after them.

No, you do not need specific permits or to pay entrance fees to ride this loop. Both the Besòs River Park and the trails leading to Puig Castellar within the Parc de la Serralada de Marina are freely accessible to the public.

Yes, this route utilizes sections of several other paths. Along the Besòs River, you'll ride parts of the Ruta Mediterrània, La Jonquera - Sant Adrià del Besós, Ronda Verda - Sector Besòs, and Bicivia 8. As you head towards Puig Castellar, you might also encounter segments of the GR 92 BTT and trails like De la font de l'Alzina al Puig Castellar.

Given the varied terrain and difficulty, we recommend bringing plenty of water, snacks, a helmet, appropriate mountain biking gear, a repair kit, and a fully charged phone. Sun protection is also advisable, especially on exposed sections.

Along the Besòs River section, especially closer to urban areas, you'll find cafes and public restrooms. However, as you ascend towards Puig Castellar, facilities become scarce, so plan accordingly and make use of amenities before heading into the more remote hilly sections.

When mountain biking in Parc de la Serralada de Marina, which encompasses Puig Castellar, it's important to stay on marked trails, respect wildlife, and avoid disturbing the natural environment. Keep your speed in check, especially on descents, and be mindful of hikers and other trail users. Dogs must be on a leash.