Portell de l'Infern - Ulldecona Reservoir Trail
Portell de l'Infern - Ulldecona Reservoir Trail
4.5
(13)
81
hikers
05:39
18.1km
660m
Hiking
Hike the difficult 11.2-mile Portell de l'Infern - Ulldecona Reservoir Trail in Tinença de Benifassà Natural Park.
Last updated: February 26, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Parc Natural de la Tinença de Benifassà
Waypoints
Start point
Parking
Get Directions
3.64 km
Highlight (Segment) • Gorge
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Tip by
6.37 km
Highlight • Gorge
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Tip by
7.43 km
Highlight • Cave
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Tip by
15.3 km
Highlight • Lake
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Tip by
18.1 km
End point
Parking
Way Types & Surfaces
Way Types
10.2 km
7.82 km
< 100 m
< 100 m
Surfaces
16.7 km
1.35 km
< 100 m
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Elevation
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Weather
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Saturday 30 May
29°C
16°C
16 %
Additional weather tips
Max wind speed: 9.0 km/h
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This route was planned by komoot.
This trail is rated as difficult, covering approximately 18 km with an elevation gain of about 662 meters. While the full route is challenging, some shorter loops around the Ulldecona Reservoir are considered easier and suitable for most fitness levels. Routes that include the Portell de l'Infern, especially those extending to the Salt de Robert waterfall, are generally harder due to their length and significant elevation.
You'll encounter a diverse landscape, starting with wide paths and beautiful pine forests. As you progress, the path can become narrower, leading to areas with impressive vaulted rock walls. Expect rocky or uneven sections, which may be muddy after rain. From higher vantage points, the trail offers spectacular panoramic views of deep valleys and the expansive Tinença area.
Absolutely! Key highlights include the legendary passage of Portell de l'Infern, the scenic Ulldecona Reservoir with its emerald or turquoise waters, and the dramatic Ronyosa Narrows. You might also pass the Cave of the Air, the Font del Teix (a permanent water source), and the ruins of Mas del Pixón.
While specific parking areas aren't detailed, many routes around the Ulldecona Reservoir or starting from nearby villages like Fredes offer access. It's advisable to check local maps or trail guides for designated parking spots near common trailheads, especially if you plan to start from Fredes for the Portell de l'Infern - Ulldecona Reservoir Trail.
The Tinença de Benifassà Natural Park generally allows dogs, but they must be kept on a leash to protect local wildlife and ensure the safety of other hikers. Always ensure your dog is well-behaved and that you clean up after them.
Generally, there are no entrance fees or specific permits required for hiking the trails within the Tinença de Benifassà Natural Park, including the Portell de l'Infern - Ulldecona Reservoir Trail. However, always respect park regulations, stay on marked paths, and practice Leave No Trace principles.
Spring and autumn are generally the best seasons for hiking this trail. The weather is milder, and the natural scenery is vibrant. Summer can be very hot, especially in the exposed sections, while winter might bring colder temperatures and potentially muddy conditions after rain.
Yes, the route incorporates sections of several other paths. You'll find yourself on parts of the Fredes – Pantà d'Ulldecona pel Portell de l'Infern, Senda Portell de l'Infern, and Camí de la Fou trails. These intersections are typically well-signposted with red marks bearing the natural park's logo or white and yellow PR marks.
Yes, the trail often passes by the Font del Teix, which is noted as a permanent water source. However, it's always recommended to carry sufficient water for your entire hike, as natural sources can be unreliable or require purification.
While the full Portell de l'Infern - Ulldecona Reservoir Trail is difficult, a linear route to Portell de l'Infern starting from Fredes is rated as medium difficulty and suitable for children aged 5-6. Be aware that the return ascent might be challenging for younger children. Shorter, easier loops around the Ulldecona Reservoir are also an option for families.
The Tinença de Benifassà Natural Park is known for its rich biodiversity. Keep an eye on the skies, as you might have the opportunity to spot raptors like vultures and eagles soaring above the landscape, adding to the natural allure of the experience.
First part it's an easy road, then a steep winding path through the pines but the view is well worth it. Going down on a rocky path.