2.0
(1)
9
hikers
05:25
15.3km
760m
Hiking
Hike the difficult Sentiero dei Tre Fratelli to Lago d'Arno, a 9.5-mile route with 2494 feet of gain to an emerald alpine lake.
Last updated: February 26, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Way Types & Surfaces
Way Types
10.5 km
2.54 km
2.24 km
< 100 m
Surfaces
12.3 km
2.56 km
279 m
109 m
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Elevation
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Wednesday 27 May
27°C
16°C
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This route was planned by komoot.
Komoot rates this hike as difficult, and it is generally considered moderately challenging. While not overly steep, the climb to Lago d'Arno, especially from starting points like La Rasega, can be quite demanding due to the presence of mule tracks. Hikers unaccustomed to this type of terrain might find it more strenuous.
The trail features well-maintained mule tracks. You'll start by passing through a pine forest, offering shade, before the landscape opens up to more exposed sections. The path leads to Lago d'Arno Dam and the lake itself, set within a glacial valley.
The trail is particularly recommended in autumn to fully appreciate the magnificent colors of the larch trees. Spring and summer also offer beautiful conditions, but autumn provides a unique visual experience with the changing foliage.
Common starting points for this hike include Paspardo or La Rasega. You would typically find parking available in or near these villages, which serve as access points to the trail leading up to Lago d'Arno.
Generally, dogs are allowed on trails within Parco dell'Adamello, but they should always be kept on a leash to protect local wildlife and ensure the safety of other hikers. Please check specific park regulations for any seasonal restrictions.
As of now, there are typically no specific permits or entrance fees required for hiking on the general trails within Parco dell'Adamello, including this route. However, it's always a good idea to check the official park website for the most current regulations before your visit.
The main highlight is Lago d'Arno Dam and the stunning Lago d'Arno itself, an artificial lake with emerald waters often compared to a Norwegian fjord. You might also encounter historical elements like destroyed barracks on the north shore of the lake and enjoy panoramic views of the majestic Adamello mountain range.
Yes, the route follows the entire length of the Sentiero dei Tre Fratelli and the Via Bassa dell'Adamello. It also covers a significant portion of the Sentiero Italia - Tappa D26S.
This specific route, as described, is an out-and-back trail, meaning you will return along the same path you took to reach Lago d'Arno. However, the area around Lago d'Arno offers possibilities for exploring different sections or extending your hike.
Given the trail's difficulty and length, it's advisable to bring plenty of water, snacks, appropriate hiking footwear, layers of clothing for changing weather conditions, sun protection, and a map or GPS device. Trekking poles can also be helpful on the mule tracks.
While there are no cafes or restaurants directly on the trail itself, you may find options in the nearby villages such as Paspardo, which serves as a common starting point. It's best to pack your own food and drinks for the hike.