San Blas Hollow Loop
San Blas Hollow Loop
11
runners
01:32
12.1km
310m
Running
Jog the difficult 7.5-mile San Blas Hollow Loop in Cuenca Alta del Manzanares Regional Park, gaining 1029 feet in 1h 32m.
Last updated: February 26, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Parque Nacional de la Sierra de Guadarrama
Waypoints
Start point
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3.45 km
Highlight • Gorge
Translated by Google •
Tip by
11.9 km
Highlight • Religious Site
Translated by Google •
Tip by
12.1 km
End point
Way Types & Surfaces
Way Types
11.1 km
958 m
Surfaces
10.6 km
997 m
534 m
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Elevation
Highest point (1,320 m)
Lowest point (1,030 m)
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Weather
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Tuesday 26 May
32°C
16°C
0 %
Additional weather tips
Max wind speed: 13.0 km/h
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This route was planned by komoot.
The San Blas Hollow Loop is approximately 12.1 kilometers (7.5 miles) long. For an average jogger, it typically takes around 1 hour and 32 minutes to complete the entire loop.
This route is considered difficult. With an elevation gain of over 313 meters (1,027 feet) and varied terrain, it presents a significant challenge suitable for experienced joggers looking for a demanding workout.
Given its 'difficult' rating and substantial elevation gain, this loop is generally not recommended for beginners. It's best suited for experienced joggers who are comfortable with challenging terrain and longer distances.
Along the San Blas Hollow Loop, you'll encounter notable features such as the Hoya de San Blas, a striking gorge, and the historic San Blas Hermitage, a religious building offering a cultural highlight.
Yes, the San Blas Hollow Loop shares sections with several other trails. Notably, it covers 93% of 'El Hueco de San Blas' and 91% of 'Dehesas de Soto - El Hueco de San Blas'. Smaller portions also overlap with 'De Valencia a Lisboa (Etapa desde Bustarviejo a Manzanares El Real)', 'Estación FC de Miraflores - La Camorza', and 'Camino de la Peña del Madroño'.
While specific parking details for this exact loop are not provided, access points for trails within the Cuenca Alta del Manzanares Regional Park typically include designated parking areas near villages or trailheads. It's advisable to check local maps or park information for the most convenient and official parking options near the starting point of the loop, often close to the San Blas Hermitage.
As part of the Cuenca Alta del Manzanares Regional Park, dogs are generally permitted on trails. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other trail users. Please remember to clean up after your pet.
The best time to jog the San Blas Hollow Loop is typically during spring (April-June) and autumn (September-November). During these seasons, the weather is usually milder, offering more comfortable temperatures for jogging and enjoying the natural surroundings. Summer can be very hot, and winter may bring colder temperatures and potentially slippery conditions.
The San Blas Hollow Loop is located within the Cuenca Alta del Manzanares Regional Park. Generally, there are no entrance fees for accessing the park's trails. However, certain activities or specific areas within the park might require permits. It's always a good idea to check the official park website for any current regulations or permit requirements before your visit.
Given its 'difficult' rating and location within a regional park, you can expect varied terrain. This likely includes a mix of dirt paths, rocky sections, and potentially some steeper ascents and descents. Proper trail running shoes with good grip are highly recommended.
Due to its 'difficult' rating, significant distance, and elevation gain, the San Blas Hollow Loop is generally not considered family-friendly for younger children or those unaccustomed to strenuous activity. It's better suited for adults and older, experienced teenagers.