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Follow an old iron railway for 25 km through dense Basque woodland, tunnels and riverside villages on a guided mountain bike ride from San Sebastián. This private tour pairs easy grades with a traditional Basque picnic and tailored pacing for all levels.
Follow an old iron railway for 25 km through dense Basque woodland, tunnels and riverside villages on a guided mountain bike ride from San Sebastián. This private tour pairs easy grades with a traditional Basque picnic and tailored pacing for all levels.
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Book directly with Experience San Sebastian for the best rates and real-time scheduling.
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Operated by Experience San Sebastian · San Sebastián, Gipuzkoa
You push off from a quiet lane outside San Sebastián and the city noise dissolves into pine and river song. The old iron railway—now a graded 25 km bike corridor—threads through deep woodland, slides through short, timeworn tunnels and opens into small Basque villages where stone houses watch riders pass.
moderate.
4–5 hours.
Suitable for riders with basic cycling fitness who can handle 25 km of mixed gravel at an easy-to-moderate pace; the guide adapts distance to group level.
Basic cycling fitness is sufficient—the guide adjusts the distance and pace to match your level, and the route has gentle grades rather than sustained climbs.
Yes; premium aluminium-frame mountain bikes with front suspension and helmets are included in the tour price.
Yes—there’s usually a suitable riverside spot at the end of the ride for a quick dip; bring swimwear and a towel.
Rain makes gravel sections and low bridges slippery; operators may cancel in heavy weather, and you should expect muddier conditions and possible short detours.
The corridor follows a 19th-century industrial railbed that moved iron from inland mines to coastal processing—its gentle grades reflect freight-era engineering tied to Basque industry.
Riders pass sensitive riparian zones; stick to the graded trail, pack out all trash and avoid trampling banks to protect spawning habitat and stream-side vegetation.
Experience San Sebastian operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
Book with Experience San Sebastian
Book directly with Experience San Sebastian for the best rates and real-time scheduling.
Reserve Now