Stories of Discovery & Wonder

Train Track Trail Mountain Bike Ride from San Sebastián — 25 km Basque Woods Escape

Follow a converted iron railway through 25 km of Basque woodlands, tunnels and rivers on this private, guided mountain bike ride from San Sebastián. Tailored to ability levels, the route is mostly flat and finishes with a traditional Basque picnic and optional river dip.

San Sebastián, Gipuzkoa•

4–5 hours

•By Adventure Collective•October 2025

The Experience

You push off from a shaded lane and the city noise shrinks behind you—only the soft click of gears and the river’s voice ahead. The old railway corridor unspools beneath your tires: packed earth, crushed stone, and the occasional slate ribbon where the line once slept. Tunnels cut through basalt and sandstone throw cool shadows; village houses appear like stage props between chestnut and beech.

Before You Go

Bring a refillable water bottle

Distances are up to 25 km with stretches between services—use a 1–2L hydration pack or at least two bottles.

Expect mixed surfaces

Packed dirt and crushed-stone track require a front-suspension bike and confident basic bike-handling.

Pack swimwear and a quick-dry towel

There’s a good chance to cool off in calm river pools at the end of the ride—bring a dry change of clothes.

Wear sunscreen and insect repellent

The woods offer shade but also mid-day sun gaps and mosquitoes in warmer months—protect exposed skin.

Local Knowledge

Hidden Gems

•Small riverside pools near the trail terminus good for a quick swim
•A quiet picnic glade beneath chestnut trees often missed by larger groups

Wildlife

•kingfisher
•roe deer

Conservation Note

Stay on the converted railbed, pack out all waste, and avoid trampling riverbanks—local operators support low-impact travel to preserve woodland and waterways.

The corridor follows a former iron-rail line used to move ore from regional mines into San Sebastián, leaving low-grade engineering features and tunnels along the route.

What to Bring

✓

Hydration pack or two water bottlesEssential

Keeps you hydrated on stretches without services and in warm weather.

✓

Light rain shellEssential

Protects against sudden Basque showers and cool tunnel gusts.

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Cycling gloves

Improve grip and comfort on long sections of crushed stone.

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Quick-dry swimwear and towel

For an end-of-ride river dip and a comfortable change afterwards.

Common Questions

Is prior mountain biking experience required?

No expert skills are necessary—basic bike handling and comfort on mixed surfaces suffice; guides tailor route length to ability.

What equipment is provided?

Premium aluminium-frame mountain bikes with front suspension, helmets, and secure storage are supplied by the operator.

Where does the ride start and finish?

The tour departs from San Sebastián with transport included; exact meeting and pick-up details are confirmed at booking.

What is included in the picnic?

A traditional Basque picnic typically includes serrano ham, chorizo, tortilla de patata, artisan bread, local cheeses, olives and a selection of drinks.