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Routes
Mountain biking trails
Spain
Basque Country
Gipuzkoa
Donostia/San Sebastián
Errenteria

San Marcos and Txoritokieta Loop

Hard

San Marcos and Txoritokieta Loop

01:01

8.95km

290m

Mountain biking

This difficult 5.6-mile mountain bike loop in Lau-Haizeta Park offers 950 feet of climbing and takes just over an hour.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

1.16 km

Dolmen de Aitzetako Txabala

Highlight • Historical Site

Beautiful dolmen in a magical place 10 min. from Donosti. And hardly anyone knows him!

Translated by Google •

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2

4.16 km

View of the Txoritokieta Hillside

Highlight • Viewpoint

This path runs along the side of the mountain that has the abandoned Txoritokieta fortress. The path is very pretty with beautiful views, but if you have time to go up to the fortress it is very interesting.

Translated by Google •

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3

6.00 km

Ruins of Kutarro Castle

Highlight • Castle

Although now only a few ruins remain of what once was, a castle once stood here.
There is now an area with picnic tables, ideal for stopping for lunch.
If …

Translated by Google •

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B

8.95 km

End point

Parking

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Way Types & Surfaces

Way Types

3.14 km

3.06 km

2.74 km

Surfaces

2.84 km

2.66 km

1.24 km

1.22 km

726 m

244 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (280 m)

Lowest point (100 m)

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Weather

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Thursday 9 July

28°C

21°C

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Frequently Asked Questions

What is the terrain like on the San Marcos and Txoritokieta Loop?

The trail offers a varied mountain biking experience. You can expect sections with quick and easy descents, some technical elements, and fast, winding paths through dark forests with roots, ruts, and large berms. Some parts may require good bike-handling skills due to technical features.

Are there any notable landmarks or viewpoints along the route?

Yes, the loop passes by several interesting points. You can visit the ancient Dolmen de Aitzetako Txabala, enjoy the scenic View of the Txoritokieta Hillside, and explore the historic Ruins of Kutarro Castle.

What is the best time of year to mountain bike this loop?

While the trail can be enjoyed year-round, spring and autumn generally offer the most pleasant weather conditions for mountain biking in this region, with milder temperatures and less extreme heat or cold. Always check the local weather forecast before you go.

Does the trail intersect with other paths?

Yes, the route incorporates sections of several official trails, including Errenteriatik Aiako Harrira (47% of the route), San Markos (46%), Txoritokieta (38%), Astigarraga. Ekialdeko Mugarriak (23%), and La Herradura (13%). It also briefly touches upon PR-Gi 1005 (5%).

Is the San Marcos and Txoritokieta Loop dog-friendly?

Generally, dogs are allowed on trails in the Lau-Haizeta Park area. However, it's always best to keep your dog on a leash, especially in areas where wildlife might be present or near other trail users, to ensure safety and respect for the environment.

Do I need a permit or pay an entrance fee for the Lau-Haizeta Park?

Access to Lau-Haizeta Park for activities like mountain biking typically does not require a specific permit or entrance fee. However, always check local regulations before your visit, as rules can change.

Where can I park to access the trail?

Specific parking information for this exact loop isn't detailed, but trailheads in the Txoritokieta area often have designated parking spots. It's advisable to check local maps or community resources for the most convenient and official parking areas near the start of the loop.

Are there any cafes or pubs near the trail for refreshments?

While there might not be establishments directly on the trail, the Txoritokieta area is close to Donostia/San Sebastian, Spain, where you'll find numerous cafes, restaurants, and pubs to refuel after your ride.

What should I bring for mountain biking this trail?

Given the trail's 'difficult' rating and varied terrain, it's recommended to bring a well-maintained mountain bike, a helmet, appropriate protective gear, water, snacks, a basic repair kit, and a first-aid kit. A navigation device with the route loaded is also highly advisable.

Is this loop suitable for family-friendly mountain biking?

Due to its 'difficult' rating and technical sections, this specific loop might be challenging for younger children or beginners. However, the broader Txoritokieta area offers a variety of trails, some of which are described as enjoyable with easier descents suitable for less experienced riders.

What kind of natural features can I expect to see?

The trail winds through wooded areas and pine forests, offering a natural setting. You'll encounter typical forest flora and potentially some local wildlife. The View of the Txoritokieta Hillside provides expansive natural vistas.

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