Duration: Multi-day trail, typically 4-5 days; this guide covers a highlighted single-stage day hike from Oberalppass to the source of the Rhine (Stage 4) Full Trail Distance: 85 km (5 stages) Day Hike Distance: 18.5 km (Oberalppass to Maighelshuette and Tomasee, returning to Oberalppass) Elevation Gain: 780 m ascent / 780 m descent (day hike loop) Starting Elevation: 2,044 m (Oberalppass) High Point: 2,450 m (above Tomasee) Difficulty: T2-T3 (moderate to demanding mountain hiking) Best Season: July to September GPS Start: 46.6596N, 8.6713E (Oberalppass) GPS Tomasee: 46.6338N, 8.6700E (source of the Rhine)
Introduction
Welcome to the Vier-Quellen-Weg, one of Switzerland's most remarkable long-distance trails. This route connects the sources of four of Europe's greatest rivers: the Rhine, the Rhone, the Reuss, and the Ticino. All four rise within a relatively compact area of the Gotthard massif in central Switzerland, a hydrological phenomenon that has fascinated geographers for centuries.
The Gotthard region is often called the water tower of Europe, and with good reason. From this single mountainous area, roughly 30 kilometres across, water flows to four different seas: the Rhine to the North Sea, the Rhone to the Mediterranean, the Reuss via the Aare to the North Sea, and the Ticino via the Po to the Adriatic. This continental watershed, where the drainage basins of northern and southern Europe meet, is one of the most geographically significant locations on the continent.
Today's audio guide covers the most popular day-hike stage: the walk from the Oberalppass to the Tomasee, the official source of the Rhine, with a stop at the Maighelshuette along the way. This is a hike of roughly 18.5 kilometres as a round trip, with 780 metres of elevation gain, taking about five to six hours.
The Vier-Quellen-Weg was inaugurated in 2012 and is maintained by the Vier-Quellen-Weg Foundation. The full five-stage trail uses mountain huts for overnight accommodation and traverses a landscape of high passes, glacial valleys, and pristine alpine wilderness.
Practical notes: The Oberalppass is reached by the Matterhorn Gotthard Bahn from Andermatt or Disentis. There is a restaurant and parking at the pass. Carry water, food, warm layers, and rain gear. The trail is marked with standard yellow hiking signs and the Vier-Quellen-Weg logo.
Waypoint 1: Oberalppass (2,044 m)
GPS: 46.6596N, 8.6713E
You are standing on the Oberalppass, at 2,044 metres one of the great Alpine crossings of Switzerland. This pass marks the boundary between the canton of Uri to the west and the canton of Graubuenden to the east. It is also the linguistic border between German-speaking and Romansh-speaking Switzerland.
The pass has been used as a transit route for millennia. Archaeological finds suggest that people have been crossing it since the Bronze Age, at least 3,000 years ago. In the Middle Ages, it was an important trading route, and a hospice was maintained near the summit for the safety of travellers. Today, the pass road is open from June to October and closed in winter under deep snow. The Matterhorn Gotthard Bahn railway, however, runs year-round through the Oberalp tunnel.
The small lake at the pass, the Oberalpsee, has been enlarged by a dam for hydroelectric purposes. The original lake was a natural feature, formed in a depression scoured by glaciers, but the dam has raised the water level significantly. The lake's deep blue water reflects the surrounding mountains on calm days.
Look south from the pass. The trail to the Tomasee heads in that direction, climbing gently through a wide, open valley. The landscape here is austere and beautiful: rolling grasslands, scattered boulders, and distant ridgelines under an immense sky.
Begin walking south, following signs for "Tomasee" and "Vier-Quellen-Weg."
Next waypoint: 2.0 km, approximately 35 minutes.
Waypoint 2: The Gravel Flats (2,100 m)
GPS: 46.6505N, 8.6710E
The trail crosses a broad, flat area of gravel and short grass, a glacial outwash plain left by the retreat of ice at the end of the last Ice Age. The valley here is wide and open, giving a sense of spaciousness that is unusual in the generally confined valleys of the Swiss Alps.
The rocks beneath your feet are part of the Gotthard Massif, one of the oldest geological units in the Alps. Unlike the limestone of the Bernese Oberland or the Jura, the Gotthard Massif is composed primarily of gneiss and granite, crystalline rocks that formed deep in the Earth's crust over 300 million years ago. These ancient basement rocks were uplifted during the Alpine orogeny and now form the core of the central Alps. Their hardness and resistance to erosion explain the rugged, angular character of the peaks in this area.
The sparse vegetation on the gravel flats includes several specialist plants adapted to the unstable, nutrient-poor substrate. The glacier crowfoot, Ranunculus glacialis, with its white-to-pink flowers, is one of the highest-growing flowering plants in the Alps. The round-leaved penny-cress, Thlaspi rotundifolium, colonises raw gravel with an extensive root system that helps stabilise the loose material.
Listen for the melodious song of the water pipit, a small brown bird that nests on the ground in alpine meadows. Its display flight, a soaring ascent followed by a parachuting descent with outspread wings, is a characteristic sight and sound of the high Alps in summer.
Next waypoint: 1.5 km, approximately 25 minutes.
Waypoint 3: The Maighels Valley Entrance (2,200 m)
GPS: 46.6430N, 8.6720E
The trail now enters the Val Maighels, a beautiful U-shaped glacial valley. The valley's flat floor and steep, smooth walls are textbook evidence of glacial erosion. A glacier once filled this valley to a depth of several hundred metres, grinding the valley floor flat and steepening the walls. When the ice melted, it left this characteristic trough shape.
The Maighels stream runs through the valley floor, its clear waters tumbling over boulders. This stream is a tributary of the Rhine; the water flowing past your feet will eventually join the Vorderrhein, then the Rhine proper, passing through Lake Constance, Basel, Cologne, and Rotterdam before reaching the North Sea, a journey of over 1,200 kilometres.
The valley is a paradise for marmots. Their burrow entrances are visible as holes in the grassy slopes, and their warning whistles echo off the valley walls on warm summer days. The colonies here are large and relatively undisturbed. If you sit quietly for a few minutes, you may see the marmots emerge to feed on the rich alpine grasses and wildflowers.
Golden eagles also frequent this valley, hunting marmots and other small mammals. The undisturbed, wild character of the Val Maighels makes it ideal raptor habitat, and eagle sightings are regular.
Next waypoint: 1.5 km, approximately 25 minutes.
Waypoint 4: Maighelshuette (2,310 m)
GPS: 46.6362N, 8.6745E
The Maighelshuette is a Swiss Alpine Club hut, rebuilt in 2003 as a modern, energy-efficient structure. It serves as a base for climbers, hikers on the Vier-Quellen-Weg, and ski tourers in winter. The hut has dormitory accommodation, a restaurant serving hearty mountain meals, and remarkable views of the surrounding peaks.
The SAC hut system is one of the pillars of Swiss mountain culture. The Swiss Alpine Club, founded in 1863, maintains over 150 huts throughout the Alps, providing shelter at strategic locations for mountaineers and hikers. The huts range from simple bivouac shelters to large, fully serviced lodges. The Maighelshuette falls in the middle: comfortable but not luxurious, with the emphasis on functionality and the mountain experience.
From the hut terrace, look west toward the Maighelsluecke, the pass at the head of the valley. This pass, at 2,421 metres, connects the Rhine catchment where you are standing to the Reuss catchment on the other side. Water falling a few metres to the west of the pass ridge flows toward the Reuss, then the Aare, then the Rhine, reaching the North Sea. Water falling on the eastern side, where you are, flows to the Rhine via the Vorderrhein, also reaching the North Sea but by a completely different route. The proximity of these two paths to the same sea, taking routes hundreds of kilometres apart, illustrates the complex hydrology of the Gotthard region.
Refill your water bottles here if the hut is open, and take a rest before the climb to the Tomasee.
Next waypoint: 1.2 km, approximately 30 minutes (uphill).
Waypoint 5: The Climb to Tomasee (2,400 m)
GPS: 46.6350N, 8.6715E
Leaving the hut, the trail climbs steadily toward the Tomasee. The terrain becomes rockier, and the vegetation thins to scattered cushion plants and alpine grasses.
As you climb, consider the extraordinary history of human interaction with this landscape. The Gotthard region has been a crossroads of European civilisation for millennia. The Gotthard Pass, just to the west, was the critical link between northern and southern Europe for much of recorded history. The opening of the Gotthard road in the thirteenth century, made possible by the construction of a daring bridge over the Schoellenen Gorge, transformed European trade and politics, linking the German-speaking north with the Italian-speaking south.
The strategic importance of the Gotthard has shaped Swiss history. The founding of the Swiss Confederation in 1291 was driven in part by the desire of the forest cantons of Uri, Schwyz, and Unterwalden to control this vital transit route. The revenues from tolls on Gotthard traffic enriched the cantons and gave them the economic power to resist Habsburg domination. In a very real sense, Switzerland as a nation owes its existence to the geography of this mountain area.
The Gotthard rail tunnel, opened in 1882, was one of the engineering wonders of the nineteenth century. The Gotthard Base Tunnel, opened in 2016 at 57.1 kilometres, is the longest railway tunnel in the world. Both pass through the rock beneath your feet.
Next waypoint: 600 m, approximately 15 minutes.
Waypoint 6: Tomasee - Source of the Rhine (2,345 m)
GPS: 46.6338N, 8.6700E
Here it is. The Tomasee, or Lai da Tuma in Romansh, at 2,345 metres above sea level. This modest mountain lake is officially recognised as the source of the Rhine, one of Europe's greatest rivers.
The lake is roughly 250 metres long and 100 metres wide. Its waters are remarkably clear, with a slightly greenish tint from the algae that grow on the rocky bottom. The lake occupies a shallow depression in the gneiss bedrock, likely a cirque carved by a small glacier during the Ice Age.
At the northern end of the lake, a small stream trickles out over the rocks. This is the birth of the Rein da Tuma, which flows north to join the Vorderrhein. From this tiny trickle begins a river that will travel 1,232 kilometres through Switzerland, Liechtenstein, Austria, Germany, France, and the Netherlands before reaching the North Sea at Rotterdam. The Rhine drains an area of 185,000 square kilometres and is the economic backbone of western Europe, carrying more commercial shipping than any other river on the continent.
There is a certain magic in standing at the source of such a mighty river. The lake is utterly still on calm days, reflecting the sky and the surrounding ridges. The silence is profound, broken only by the whisper of wind and the gentle lapping of water on stone.
Take a moment to walk around the lake's edge. The shoreline is accessible, and you can dip your hands in the cold, clear water, touching the Rhine at its very beginning.
A stone monument near the lake marks the source. The inscription notes that the lake was designated as the official source of the Rhine by the Swiss canton of Graubuenden, though geographers have debated the true source for centuries. Other candidates include more distant headwaters of the Hinterrhein, but the Tomasee holds the official title by convention and tradition.
Next waypoint: Rest here, then begin return. 1.0 km back to Maighelshuette, approximately 20 minutes.
Waypoint 7: Return via Maighelshuette (2,310 m)
GPS: 46.6362N, 8.6745E
On your return, the trail descends from the Tomasee back to the Maighelshuette. The return journey offers different perspectives on the landscape you passed through earlier, and the changing light of the afternoon can reveal new colours and textures in the rock and vegetation.
If the hut is open, consider stopping for a meal or drink. The hearty barley soup, Gerstensuppe, traditional to the region, is a perfect restorative after the climb to the lake.
From the hut, you retrace your steps through the Val Maighels back to the Oberalppass. The walk back is mostly gentle downhill, allowing you to relax and enjoy the valley at a leisurely pace.
Next waypoint: Continue to Oberalppass, 5.0 km, approximately 75 minutes.
Waypoint 8: Val Maighels Return (2,150 m)
GPS: 46.6460N, 8.6720E
As you walk back through the valley, take the time to observe details you may have missed on the way up. The stream meanders across the valley floor in broad curves, creating small pools and gravel bars. These meanders are a sign of a healthy, natural waterway, as yet unchannelled and undammed.
The light in the late afternoon creates long shadows across the valley, highlighting the textures of the rock and the ripples in the grass. If the sky is clear, the surrounding peaks take on warm, golden tones that contrast with the deep blue of the shadows. This is the magic hour of mountain photography, and the Val Maighels provides superb subjects.
The valley is also a corridor for wildlife movement. Chamois and deer use it to travel between winter and summer ranges, and the predators that follow them, foxes, stoats, and occasionally wolves, which have been recolonising Switzerland in recent years, also pass through.
The return of the wolf to Switzerland is one of the most discussed conservation topics in the country. After being hunted to extinction in the nineteenth century, wolves began naturally recolonising from Italy and France in the 1990s. Today, several packs are established in the Swiss Alps. The Gotthard region, with its large expanses of wild terrain, is potential wolf territory, and sightings have been reported in the area.
Next waypoint: 3.0 km, approximately 45 minutes.
Waypoint 9: Return to Oberalppass (2,044 m)
GPS: 46.6596N, 8.6713E
You have returned to the Oberalppass, completing the day hike to the source of the Rhine.
Closing
Today you have stood at the birthplace of one of Europe's mightiest rivers, a trickle of water in a mountain lake that becomes a force of nature flowing past cities and through nations to the sea.
The Vier-Quellen-Weg, in its full five-stage form, connects the sources of the Rhine, Rhone, Reuss, and Ticino, a journey of 85 kilometres through the hydrological heart of Europe. If today's hike has inspired you, consider returning to walk the entire trail. Each stage visits a different river's source and traverses a landscape of wild, austere beauty.
From the Oberalppass, the railway runs east to Disentis and Chur, or west to Andermatt and the Gotthard. The train journey over the Oberalppass in either direction is one of the most scenic railway rides in Switzerland, with views of deep gorges, alpine meadows, and the peaks of the Gotthard massif.
Thank you for hiking with ch.tours. May the memory of the Tomasee, and the mighty river that flows from it, stay with you wherever your own journey takes you. Safe travels.