Duration: Approximately 4 to 5 hours of narrated hiking Distance: 14 km (one way, Kandersteg to Leukerbad) Elevation Gain: 1,200 m ascent / 900 m descent (or gondola to reduce ascent) Starting Elevation: 1,176 m (Kandersteg) or 1,950 m (Sunnbuel gondola) High Point: 2,322 m (Gemmi Pass) Ending Elevation: 1,411 m (Leukerbad) Difficulty: T2 (moderate; the descent to Leukerbad via cliff path is T3, exposed) Best Season: June to October GPS Start Kandersteg: 46.4950N, 7.6750E GPS Sunnbuel: 46.4460N, 7.6290E GPS Gemmi Pass: 46.4130N, 7.6150E GPS Leukerbad: 46.3790N, 7.6280E
Introduction
Welcome to the Gemmi Pass, one of the great historic crossings of the Bernese Alps. For centuries, this route has connected the Bernese Oberland to the north with the Rhone Valley and the Valais to the south. Today, it remains one of the most dramatic day hikes in Switzerland, culminating in a descent down a near-vertical cliff face that has thrilled and terrified travellers since the Middle Ages.
The Gemmi Pass sits at 2,322 metres between the Kandersteg valley and Leukerbad, the famous thermal spa town in the Valais. The crossing offers everything a great Swiss hike should: high alpine scenery, a shimmering mountain lake, a legendary cliff path, and the promise of thermal baths at journey's end.
The route has two starting options. You can walk from Kandersteg to the pass via the Sunnbuel area, a full day of 14 kilometres with 1,200 metres of ascent. Alternatively, you can take the Sunnbuel gondola from Kandersteg to 1,950 metres, reducing the distance and climb significantly. This audio guide covers the full route from Kandersteg but notes where the gondola option joins the trail.
A word about the famous descent from the pass to Leukerbad: the path drops 900 metres down a cliff face in a series of tight zigzags. It is well-engineered and has been improved with metal railings in the most exposed sections, but it is steep, exposed, and not for those with a severe fear of heights. If this is a concern, you can take the Gemmi cable car from the pass down to Leukerbad instead.
Practical notes: Carry water and food, wear sturdy boots, and bring rain gear. The pass can be windy and cold even in summer. If descending on foot, trekking poles are very helpful for the steep sections.
Waypoint 1: Kandersteg to the Sunnbuel Gondola (1,176 m to 1,950 m)
GPS: 46.4950N, 7.6750E to 46.4460N, 7.6290E
If walking from Kandersteg, the first section follows the valley road and then a forest trail south toward the Sunnbuel area. The walk through the Gasterntal junction and into the Gemmi valley is pleasant, with the Kander river for company and views of the surrounding peaks.
Kandersteg is one of the great mountain villages of the Bernese Oberland. It sits at the northern end of the Loetschberg tunnel and has been a starting point for alpine crossings for centuries. The village is home to the International Scout Centre, established in 1923, which hosts thousands of young people from around the world each year.
If you are taking the gondola, the ride from Kandersteg to Sunnbuel at 1,950 metres takes about 8 minutes and saves roughly 2 hours of walking and 770 metres of climbing. From the Sunnbuel upper station, the trail to the Gemmi Pass continues south across alpine terrain.
Next waypoint from Sunnbuel: 2.5 km, approximately 40 minutes.
Waypoint 2: The Spittelmatte Area (2,050 m)
GPS: 46.4350N, 7.6230E
The trail crosses a broad, flat area known as Spittelmatte, a former site of a medieval hospice that provided shelter to travellers crossing the Gemmi. The name "Spittel" derives from "hospital" or "hospice," reflecting its historical function.
The hospice was maintained by the authorities of Leukerbad and served travellers on the Gemmi route for centuries. Before the construction of the Loetschberg rail tunnel in 1913, the Gemmi was one of the main routes between the Bernese Oberland and the Valais, and the hospice provided essential shelter for those caught by weather or darkness on the exposed pass.
The landscape here is austere and beautiful: rolling alpine meadow dotted with boulders, with the grey walls of the Daubenhorn rising to the east and the glaciated summits of the Balmhorn and Altels visible to the west. The Balmhorn, at 3,698 metres, is one of the highest peaks in the region and was first climbed in 1864.
The meadows at this elevation support a specialised flora adapted to the short growing season and harsh winters. Look for the spring pasque flower, Pulsatilla vernalis, with its large, bell-shaped white-to-purple blooms covered in silky hairs. This plant is one of the earliest to flower after snowmelt, sometimes pushing through the last remnants of snow.
The Gemmi route has a rich literary history. In addition to Mark Twain and Alexandre Dumas, the passage was described by numerous travel writers of the eighteenth and nineteenth centuries, who wrote with a mixture of terror and awe about the cliff descent. The Swiss naturalist Albrecht von Haller, author of the famous poem "Die Alpen" in 1729, one of the first literary works to celebrate the beauty of Alpine scenery, knew the Gemmi well and drew inspiration from its dramatic landscape.
The economic importance of the Gemmi route was considerable. Before modern roads and railways, the pass was a vital trade link. Merchants transported salt, wine, cheese, and other goods between the cantons of Bern and Valais. Pack mules carried loads up to 100 kilograms over the pass, and in winter the route was maintained by snow clearance teams. The toll revenues from the Gemmi were a significant source of income for Leukerbad and the surrounding communities.
Next waypoint: 2.0 km, approximately 35 minutes.
Waypoint 3: Daubensee (2,206 m)
GPS: 46.4200N, 7.6180E
The Daubensee is one of the finest mountain lakes in Switzerland. Roughly 800 metres long and 400 metres wide, it sits in a rocky basin just below the Gemmi Pass, its waters ranging from pale grey-green to deep blue depending on the light and season.
The lake is unusual in that it has no visible inlet or outlet. It is fed by snowmelt and rainfall that percolates through the surrounding rock, and it drains underground through the porous limestone, emerging as springs lower down. The water level fluctuates significantly through the year, sometimes dropping by several metres between spring and autumn.
The Daubensee is a popular fishing destination. The lake was stocked with trout decades ago, and the cold, clear water provides good habitat. Fishing requires a cantonal permit, which can be obtained in Leukerbad. The tranquil shore of the lake, with the Daubenhorn rising above and the sound of wind across the water, is a world apart from the drama of the cliff descent that awaits you at the pass.
Walk along the eastern shore of the lake. The trail here is flat and easy, a welcome respite before the challenges ahead. On calm days, the lake's surface reflects the surrounding mountains with crystalline clarity. The Daubenhorn, at 2,942 metres, rises directly above the lake's eastern shore, its grey limestone cliffs streaked with white quartz veins.
The area around the Daubensee has been important for the study of Alpine weather. The pass acts as a wind tunnel, funnelling air between the Bernese Oberland and the Valais, and the meteorological station nearby records some of the highest wind speeds in the Swiss Alps.
Next waypoint: 1.5 km, approximately 25 minutes.
Waypoint 4: Gemmi Pass (2,322 m)
GPS: 46.4130N, 7.6150E
You have reached the Gemmi Pass, 2,322 metres above sea level. Stand at the edge and look south. Below you, the cliff drops almost vertically for 500 metres to the Leukerbad valley floor. The town of Leukerbad is visible far below, its buildings clustered around the thermal springs that have drawn visitors for 2,000 years.
This view is one of the most famous in Switzerland, and it has inspired and unnerved visitors for centuries. Mark Twain described the Gemmi cliff in "A Tramp Abroad," comparing the descent to climbing down a wall. Alexandre Dumas wrote of the Gemmi in his travel accounts of Switzerland. The artist J.M.W. Turner painted the Gemmi in watercolours that captured the vertiginous drama of the cliff.
The Hotel Wildstrubel sits on the pass, one of the classic mountain inns of Switzerland. It has been providing hospitality to Gemmi travellers since the 1850s. If it is open, a warm drink on the terrace, with the Daubensee behind you and the Rhone Valley 1,000 metres below, is a fine experience.
The Gemmi cable car departs from near the hotel and descends to Leukerbad in about 10 minutes. If you prefer not to walk the cliff path, this is a comfortable alternative.
If you are walking, prepare for the descent. Tighten your boot laces, stow any loose items in your pack, and ready your trekking poles. The cliff path is steep, exposed, and requires your full attention.
Next waypoint: 1.5 km, approximately 50 minutes (steep descent).
Waypoint 5: The Cliff Path Descent (2,100 m)
GPS: 46.4110N, 7.6170E
The descent from the Gemmi Pass is one of the most remarkable feats of trail engineering in the Alps. The path drops 500 metres down a near-vertical cliff face in a series of tight switchbacks, many of them blasted or cut into the rock. Metal railings protect the most exposed edges.
This path was first carved out of the cliff in 1739-1741, commissioned by the town of Leukerbad and engineered by Ticinese road builders. Before this path, the descent was even more precarious: travellers were lowered down the cliff in baskets or on the backs of local guides, a service that, understandably, attracted a premium fee.
As you descend, notice the rock strata in the cliff face. The layers of limestone are tilted and folded, evidence of the immense tectonic forces that built the Alps. The cliff itself is a cross-section through the mountain, exposing geological history that would normally be hidden deep underground.
The path is safe when dry and taken with care, but it demands respect. The drop is real, the rock can be slippery when wet, and fatigue after a long day can impair concentration. Take your time. There is no hurry, and pausing frequently to look out over the Rhone Valley and the Valais Alps is both a pleasure and a practical safety measure.
Below and to the right, you can see the thermal springs of Leukerbad, their steam rising in wisps from the bathing complexes. This is your reward for the day's effort.
Next waypoint: 2.0 km, approximately 40 minutes.
Waypoint 6: The Lower Path and Forest (1,700 m)
GPS: 46.4010N, 7.6210E
As the cliff path eases into a gentler gradient, the trail enters forest and the exposure diminishes. The air is noticeably warmer here, as you have descended into the Valais, the driest and warmest major valley in Switzerland.
The Rhone Valley, visible below, has a semi-arid climate with less than 600 millimetres of annual rainfall in some areas, comparable to parts of southern Spain. The valley floor is one of the most important wine-growing regions in Switzerland, producing distinctive wines from Fendant, Humagne, Cornalin, and other grape varieties that thrive in the dry, sunny conditions.
The Valais is also the most linguistically complex canton in Switzerland. The lower, western part is French-speaking, while the upper, eastern part, the Oberwallis, is German-speaking. Leukerbad sits near the border between the two zones, and you may hear both languages in the village.
The forest here is a transition between Alpine and valley vegetation. Scots pine, a species characteristic of dry inner-Alpine valleys, appears alongside the more familiar spruce and larch. The understory includes wild thyme, whose fragrance perfumes the warm air.
Next waypoint: 2.0 km, approximately 30 minutes.
Waypoint 7: Leukerbad (1,411 m)
GPS: 46.3790N, 7.6280E
Welcome to Leukerbad, one of the great thermal spa towns of Europe. The thermal springs here have been known since Roman times, and the village has been a spa destination since the Middle Ages. The water emerges from the ground at temperatures of up to 51 degrees Celsius, among the hottest springs in the Alps.
The springs owe their temperature to the local geology. Rainwater percolates deep into the limestone bedrock through fissures, reaching depths where the earth's natural heat warms it. The water then rises back to the surface along fault lines, carrying dissolved minerals, primarily calcium sulphate, that give it its therapeutic reputation.
Leukerbad has two major public bathing complexes: the Leukerbad Therme, with its large outdoor pools and alpine views, and the Walliser Alpentherme, with a more intimate atmosphere. Both are open year-round and offer the perfect way to soak tired muscles after the Gemmi crossing.
The history of bathing at Leukerbad is ancient. The Romans are believed to have known the springs, and written records of their use date to the thirteenth century. In the fifteenth century, Cardinal Matthaeus Schiner, the powerful bishop of Sion, developed the baths into a fashionable resort. Over the following centuries, Leukerbad attracted a procession of notable visitors: the naturalist Albrecht von Haller, who studied the alpine flora here in the eighteenth century; Guy de Maupassant, who wrote about the baths; and numerous European aristocrats and politicians who came for the waters.
The therapeutic claims for the Leukerbad waters are extensive. The mineral content, rich in calcium, sulphate, and bicarbonate, is said to benefit conditions ranging from rheumatism and arthritis to skin ailments and respiratory problems. While modern medicine views such claims with caution, there is no question that soaking in 35-degree water after an eight-hour mountain hike provides tangible physical relief and profound relaxation.
The town itself is charming, with traditional Valais architecture, a small but lively centre, and several hotels ranging from simple to luxurious. The contrast between the rugged, austere landscape of the Gemmi and the warmth and comfort of the thermal baths is one of the great experiences of Swiss hiking.
Closing
You have completed the Gemmi Pass crossing, one of the great historic Alpine hikes. From the pastoral Bernese Oberland to the sun-baked Valais, you have crossed a mountain barrier that has challenged travellers for centuries.
The combination of alpine scenery, historic trail, and thermal reward makes the Gemmi one of the most satisfying day hikes in Switzerland. Few other walks offer such dramatic transitions in landscape, climate, and culture in such a short distance.
From Leukerbad, buses run to Leuk station in the Rhone Valley, where you can catch trains to Brig, Visp, or Spiez and onward to any destination in Switzerland. The bus ride down the steep, winding road from Leukerbad to Leuk is an experience in itself, with views of the Rhone Valley unfolding below.
Thank you for hiking with ch.tours. We hope the hot springs of Leukerbad soothe every muscle, and that the memory of the Gemmi cliff stays with you as one of the great sights of the Alps. Safe travels.