Four Sources Trail

This is a difficult hike, aligning with the Swiss Alpine Club (SAC) Hiking Scale's "Hard" category. It demands good fitness, sure-footedness, and alpine experience. You should be prepared for a duration of over 5 hours and significant elevation changes, requiring robust physical condition and appropriate gear.

The terrain is diverse. You'll encounter perfectly paved sections, especially along paths that may have been constructed by the military. However, the route also features rugged, rocky mountain paths where sure-footedness is crucial, and occasional scrambling might be necessary. Expect to traverse near the massive dam wall of Lake Lucendro and potentially parts of the historic cobbled "Tremola" road.

The tour offers several notable sights. You'll pass by the Guex Monument at Gotthard Pass, the tranquil Lake Lucendro with its striking turquoise waters, and the San Gottardo-Reuss Spring. The route also takes you over Lucendro Pass, offering panoramic views. You may also spot abandoned Swiss military bunkers and old military artillery, highlighting the area's strategic history.

The circular tour typically starts and ends at the San Gottardo Pass. Parking is generally available at the pass, which serves as a common starting point for many hikes in the region.

The best time to hike this trail is generally during the warmer months, from late spring to early autumn, when the alpine passes are clear of snow and weather conditions are more stable. Always check local weather forecasts before heading out.

While the trail is in an alpine environment, dogs are generally allowed on trails in the Swiss Alps. However, given the challenging terrain, including rocky paths and potential scrambles, ensure your dog is fit for such conditions. Always keep your dog on a leash, especially near livestock or wildlife, and be mindful of other hikers.

No, there are typically no specific permits or entrance fees required to hike this trail in the Swiss Alps.

Yes, if the full circular tour to Lucendro Pass seems too demanding, a shorter, more moderate 2.3 km (1.4 mi) out-and-back route to a viewpoint of Lago di Lucendro is an option. This allows you to experience some of the beautiful scenery without committing to the full difficult hike.

Yes, this route intersects with several other trails. Significant portions of the tour overlap with the Vier-Quellen-Weg and Laghi Scouri Hospitz. You'll also find sections that are part of the Walserweg Gottardo - Etappe 9, North-South Route, and the European Long distance path E1 - part Switzerland, among others.

Yes, the San Gottardo Pass area, being a significant mountain pass, typically has facilities such as restaurants, cafes, and guesthouses where you can find refreshments and meals before or after your hike.

While specific wildlife sightings are never guaranteed, the Swiss Alps are home to various alpine animals. You might spot marmots, chamois, or ibex in higher elevations. Birdwatchers may also enjoy the diverse avian species. Lago di Lucendro is also known for rainbow trout, making it a spot for fishing enthusiasts.