Estany Llong and Estanys de Dellui Trail

This trail is rated as difficult. It requires a very good level of physical fitness, sure-footedness, sturdy hiking shoes, and some alpine experience. The terrain is varied and demanding, especially as you ascend towards Estanque de Dellui.

The route offers stunning Pyrenean scenery. You'll pass by beautiful glacial lakes like La Llebreta Lake and the picturesque Sant Esperit Waterfall. The trail also leads to the Estany Llong Refuge, and culminates at the high-mountain Estany de Dellui and Estanyet de Dellui.

The terrain is alpine and mountainous, typical of the Pyrenees. You'll encounter a mix of forest paths, meadows, and rocky sections. While the approach to Estany Llong from Planell d'Aigüestortes involves a gentler incline on an old forest track, the ascent towards Estanque de Dellui is more challenging, with stony areas and steeper sections.

The best time to hike this trail is generally from late spring to early autumn (June to September) when the snow has melted and the weather is most stable. Outside of these months, you may encounter snow, ice, and more challenging conditions, requiring specialized equipment and experience.

There are no general entrance fees to access the Parque Nacional de Aigüestortes i Estany de Sant Maurici. However, certain activities or access to specific areas might require permits or have restrictions, especially during peak season. It's always best to check the official park website for the latest regulations regarding camping, fishing, or specific vehicle access.

Dogs are generally not permitted on trails within the core zone of the Parque Nacional de Aigüestortes i Estany de Sant Maurici, even on a leash, to protect the park's wildlife. Always check the most current park regulations before planning your visit with a dog.

Access to the park's interior, including areas like Planell d'Aigüestortes (a common starting point for trails leading to Estany Llong), is restricted for private vehicles during peak seasons. You'll typically need to use authorized 4x4 taxi services from nearby villages like Boí or Espot to reach the trailheads within the park. Parking is available in these villages.

Yes, this route is part of a larger network of trails within the National Park. Notably, the Refugio del Estany Llong y Estanque de Dellui trail intersects with significant portions of the renowned Carros de Foc, a multi-day high-altitude trek. It also shares sections with el Gran Bucle and Encantats.

The Estany Llong Refuge, located at 1,985 meters, provides essential services for trekkers, including accommodation, showers, heating, and meals. It's a crucial hub for those exploring the park. If the main refuge is closed, a smaller, free refuge called "La Centraleta" is available nearby.

Given the trail's difficulty and high-mountain environment, pack sturdy hiking boots, layers of clothing suitable for changing weather, rain gear, plenty of water, high-energy snacks, a map and compass (or GPS device), sun protection, and a first-aid kit. Trekking poles are highly recommended for stability on rocky or steep sections.

While the main sections leading to Estany Llong Refuge can be popular, especially in peak season, the ascent towards Estany de Dellui is generally less frequented due to its increased difficulty. To avoid crowds, consider hiking early in the morning, on weekdays, or during the shoulder seasons (late spring/early autumn) if conditions allow.