01:11
8.40km
300m
Running
Jog the Senda del Hornillo, a difficult 5.2-mile (8.4 km) loop in Sierra de Guadarrama, featuring the Hornillo Waterfall and Aceña Reservoir
Last updated: February 26, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Parque Natural de la Sierra de Guadarrama Norte
Waypoints
Start point
Parking
Get Directions
3.69 km
Highlight • Lake
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Tip by
5.63 km
Highlight • Trail
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Tip by
7.42 km
Highlight • Waterfall
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Tip by
8.40 km
End point
Parking
Way Types & Surfaces
Way Types
6.06 km
1.52 km
665 m
< 100 m
< 100 m
Surfaces
5.85 km
1.52 km
877 m
< 100 m
< 100 m
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Elevation
Highest point (1,370 m)
Lowest point (1,170 m)
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Weather
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Monday 18 May
22°C
8°C
0 %
Additional weather tips
Max wind speed: 10.0 km/h
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This route was planned by komoot.
While the Senda del Hornillo is officially rated as difficult for jogging due to its overall elevation changes and varied terrain, some sections, particularly leading up to the waterfall, are considered easier. The full circular route involves continuous ascents and descents with a cumulative elevation gain of nearly 300 meters. Beginners should be prepared for irregular surfaces, including stones and roots, especially closer to the waterfall, and potentially slippery ground after rain.
The terrain on this route is quite varied. You'll find a mix of surfaces, starting often parallel to the Hornillo stream on forest tracks. Sections pass through pine forests with comfortable paths, sometimes paved. However, closer to the Hornillo Waterfall, the path becomes more irregular with stones and roots. Expect continuous ascents and descents, and be aware that the ground can be slippery, especially after rainfall.
The Senda del Hornillo offers a rich natural environment. Key highlights include the soothing sound of the Hornillo stream, which accompanies much of the route, and the impressive 10-meter-high Hornillo Waterfall. You'll also pass by the La Aceña Reservoir and traverse diverse forests of pine, oak, and poplar. Panoramic views of the reservoir, surrounding villages, and the imposing Sierra de Gredos can be enjoyed from higher points.
The Senda del Hornillo is enjoyable year-round, but it's particularly recommended in spring to witness the Hornillo Waterfall at its fullest flow. Autumn also offers vibrant forest colors, making it a beautiful time to visit. During winter, some sections might be slippery or icy, requiring extra caution.
The Senda del Hornillo is a circular route, often starting near the Puente de la Aceña on the M-535 road in Santa María de la Alameda. Parking is typically available in this vicinity, providing convenient access to the trailhead.
While the trail is located in a natural area, public transport options to Santa María de la Alameda, the nearest town, may be limited. It's advisable to check local bus schedules or consider driving for the most direct access to the trailhead.
Yes, the Senda del Hornillo is generally dog-friendly. However, as it passes through natural areas and potentially the Sierra de Guadarrama National Park, it's always best to keep your dog on a leash to protect wildlife and ensure the safety of other trail users. Be mindful of the varied terrain, which can be challenging for some dogs.
Generally, there are no specific permits or entrance fees required to access the Senda del Hornillo or to jog within the Sierra de Guadarrama National Park. However, visitors are expected to respect park regulations, such as staying on marked paths, not disturbing wildlife, and carrying out all trash. Always check the official park website for any updated regulations before your visit.
Yes, the Senda del Hornillo is a well-marked circular route. This means you will return to your starting point without having to retrace your steps, making it convenient for joggers.
Yes, the route incorporates sections of other official trails. You will find yourself on parts of the "Senda del Hornillo" (74% of the route), "Camino de Hornillo" (23% and 8% in different sections), and "Camino de Robledondo" (7%) during your jog.
Given the varied and sometimes challenging terrain, we recommend wearing appropriate trail running shoes with good grip. Bring sufficient water, especially on warmer days, as there are no facilities on the trail. A light backpack with snacks, a first-aid kit, and a fully charged phone are also advisable. Consider trekking poles for added stability on steeper or slippery sections.