58
riders
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
Start point
Parking
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152 m
Highlight • Settlement
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Tip by
26.9 km
Highlight • Settlement
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31.2 km
Highlight • Viewpoint
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32.0 km
Highlight • Bridge
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41.1 km
Highlight • Gorge
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43.6 km
Highlight • Viewpoint
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51.8 km
Highlight • Settlement
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65.1 km
End point
Parking
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
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Elevation
Highest point (1,200 m)
Lowest point (730 m)
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Weather
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Thursday 16 July
34°C
18°C
0 %
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Max wind speed: 20.0 km/h
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This route was planned by komoot.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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