Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Routes
Mountain biking trails
Spain
Madrid
Lozoya Somosierra
Patones

GR 300 - Genaro Trail

Hard

58

riders

GR 300 - Genaro Trail

06:35

65.1km

1,560m

Mountain biking

Mountain bike the GR 300 - Genaro Trail, a challenging 40.5-mile loop around the Atazar reservoir with varied terrain and scenic views.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

Get Directions

1

152 m

Patones de Arriba

Highlight • Settlement

Patones de Arriba is a municipality in the Sierra Norte region of Madrid. Its historic center was declared a site of cultural interest for being one of the best preserved …

Translated by Google •

Tip by

2

26.9 km

El Atazar

Highlight • Settlement

Typical town of slate houses in the northern mountains of Madrid. Originally it was a group of shepherds' huts and corrals that ended up being a place of permanent residence. …

Translated by Google •

Tip by

3

31.2 km

View of the La Puebla River

Highlight • Viewpoint

From here there is a magnificent view of the valley of the La Puebla river, which flows further south into the El Atazar reservoir. It was declared a biosphere reserve by Unesco due to its rich flora and fauna.

Translated by Google •

Tip by

4

32.0 km

On this bridge you can see the passage of one of the characteristic watercourses of the area around the Atazar reservoir, the river of La Puebla. Passing through this area …

Translated by Google •

Tip by

5

41.1 km

This dam offers spectacular views. It is worth going there. Ideal for hiking, motorbike or road bike excursions. Next to the dam there is a small parking lot for about 10 cars.

Translated by Google •

Tip by

6

43.6 km

Views of the Lozoya River

Highlight • Viewpoint

The Lozoya is an important tributary of the Jarama along whose 91 kilometer route six reservoirs have been built. Right at this point, the valley takes the shape of a …

Translated by Google •

Tip by

7

51.8 km

El Berrueco

Highlight • Settlement

El Berrueco is the typical town at the foot of the Sierra de Guadarrama full of houses and granite structures. It is a transit site attached to the Atazar reservoir …

Translated by Google •

Tip by

B

65.1 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

50.9 km

7.50 km

5.11 km

1.63 km

Surfaces

33.2 km

25.1 km

5.10 km

1.71 km

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

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

Highest point (1,200 m)

Lowest point (730 m)

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Thursday 16 July

34°C

18°C

0 %

Additional weather tips

Max wind speed: 20.0 km/h

to get more detailed weather forecasts along your route

Comments

guide_signup

Want to know more?

Sign up for a free komoot account to join the conversation.

Sign up for free

This route was planned by komoot.

Save

Edit route

Download GPX

Move start point

Print

Share

Embed on a website

Report an Issue

Report restricted access

Frequently Asked Questions

What is the terrain like on the GR 300 - Genaro Trail?

The trail features varied terrain, primarily consisting of "pista" (dirt tracks or dirt roads) with some sections of "senderito" (singletrack). While generally having low technical difficulty, it can become challenging after rainfall with mud, puddles, and streams. You'll also encounter fast descents with numerous curves and stretches through farmland.

Is the Genaro Trail suitable for beginners?

While the trail has a low technical difficulty, its length of approximately 65 km and elevation gain of around 1550 meters mean it requires a good level of physical fitness. It's rated as having medium physical difficulty, so it might be challenging for absolute beginners but accessible to a wide range of riders with some experience.

What are the main points of interest along the route?

The route offers spectacular views of the Atazar reservoir and passes through charming settlements like Patones de Arriba and El Atazar. You'll also find viewpoints offering sights of the La Puebla River and Lozoya River, as well as the El Villar Reservoir and Gorge.

Where is the best place to start the GR 300 - Genaro Trail?

As a circular route, you have the flexibility to start from various points. A popular starting point is Patones de Arriba, offering convenient access to the trail.

What is the best time of year to mountain bike the Genaro Trail?

The trail can be enjoyed during many seasons, but be aware that after rainfall, sections can become muddy and challenging due to puddles and streams. Consider visiting during drier periods for a smoother experience, though the added challenge can be part of the adventure for some.

Are there any permits or entrance fees required for the Genaro Trail?

The GR 300 - Genaro Trail is located in the Embalse del Atazar area. Generally, there are no specific permits or entrance fees required to access the trail itself. However, it's always good practice to check local regulations for any changes or specific rules regarding the reservoir area.

Is the GR 300 - Genaro Trail dog-friendly?

Yes, the GR 300 - Genaro Trail is generally dog-friendly. However, as a multi-use trail, it's important to keep your dog on a leash, especially when encountering other hikers or wildlife, and to clean up after your pet.

Are there any specific rules or etiquette for mountain bikers on this trail?

The GR 300 is a "Gran Recorrido" (long-distance route) and has priority for hikers. Mountain bikers are encouraged to be respectful and yield to hikers. While there are variants for mountain bikes, some sections might be shared, so always be mindful of others on the trail.

Does the Genaro Trail intersect with other routes?

Yes, the route is primarily the GR 300 - Senda del Genaro (100% of the route). It also passes through sections of other trails such as Senda del Genaro (Etapa 3), Senda del Genaro (Etapa 7), and Senderos del Jarama, among others.

Are there amenities like cafes or accommodation near the trail?

Yes, you'll find amenities in the settlements along the route. Patones de Arriba and El Atazar are good places to look for cafes, restaurants, or accommodation options to refuel or stay overnight.

Are there any particularly challenging sections or tips for riding the Genaro Trail?

While technically not overly difficult, the trail's length and elevation gain require good physical stamina. Be prepared for potentially muddy and wet sections after rain. Riders often highlight the very fast and winding descents as a fun and engaging aspect, so be ready for some adrenaline-filled moments.

Nearby routes

Hard

4.6

238

Hoya de San Blas, Morcuera, Canencia — Sierra de Guadarrama

05:12h

49.1km

1,250m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy