Davos to Sion Road Trip: Alpine Adventure Guide

The route from Davos to Sion covers approximately 180 kilometers, but the driving time—around 2.5 to 3 hours without stops—belies the richness of the journey. This is not a motorway dash; it's a winding Alpine traverse that crosses the Flüela Pass (2,383 m), descends into the Engadin valley, then climbs again over the Julier Pass (2,284 m) before dropping into the Rhône valley. The highest point on the route is the Flüela Pass, where the road clings to sheer cliffs above the wild Landwasser valley. Historically, this path was a mule track used by Romans and later by pilgrims crossing the Alps.

Key question: How long to drive Davos to Sion? Without breaks, it's 2h45m on a clear day. But with the sheer number of viewpoints, villages, and alpine pastures, a full day is recommended. Is it worth driving Davos to Sion? Absolutely—this route offers a condensed version of the best Swiss mountain scenery. For those seeking best stops Davos to Sion, the journey is dotted with iconic passes and serene valleys. And for things to do between Davos and Sion, consider stopping at the Swiss National Park, the Engadin lakes, or the historic town of St. Moritz.

Below is a quick overview of distances and estimated fuel costs. All prices are approximate and subject to change.

Fuel and Route Economics

The mountainous terrain demands more fuel than flat motorways. A typical car consuming 8 L/100 km will use about 14.4 liters for the full route, costing around 26 CHF at current Swiss prices (1.80 CHF/L). Fuel stations are plentiful in Davos, St. Moritz, and along the A13/E43 motorway near Thusis. However, on the passes (Flüela and Julier), there are no stations for 30 km stretches, so fill up before climbing. For electric vehicles, charging stations are available in Davos, St. Moritz, and Sion, but not on the passes themselves.

• Best stops for fuel: Davos post office (Coop gas station), St. Moritz (Agip), Silvaplana (Shell).
• Fuel efficiency tips: Use engine braking on descents, maintain steady speeds (60-70 km/h on passes), and avoid unnecessary acceleration.

Road Quality and Safety

The roads are generally well-maintained, with asphalt in good condition on main routes. The Flüela Pass (H28) is narrow with many hairpin turns; guardrails are present but some sections lack barriers. The Julier Pass (H3) is wider and more forgiving. Night illumination: only the final leg from Sion to the motorway (A9) is well-lit; the passes are dark—dims your lights for oncoming traffic and watch for wildlife (deer, chamois). Tolls: None on these roads, but the motorway (A13/A9) requires a vignette (40 CHF/year).

Family and Child Suitability

The Swiss National Park in Zernez is a top family stop: easy walking trails (e.g., the Chamanna Cluozza loop), interactive visitor center, and wildlife spotting. In St. Moritz, the Segantini Hut (accessible by funicular) offers an art lesson and panoramic views. The Julier Pass has a large picnic area with tables and a playground (near the Julierhaus restaurant). For rainy days, the Bündner Kunstmuseum in Chur (a 30-min detour) has family-friendly exhibits.

• Swiss National Park visitor center: Free entry, hands-on exhibits.
• Lake Silvaplana: Windsurfing schools and mini-golf nearby.
• Sion: The Valère Basilica (free, with a museum of musical instruments).

Pet-Friendly Framework

Dogs are welcome on most hiking trails (leash required in the National Park). Many restaurants on the route allow dogs on outdoor terraces; call ahead for indoor seating. Pet-friendly stops include the Flüela Pass parking lot (large grassy area), Silvaplana lake shore (access for a swim), and Sion's Parc de la Planta (large park with walking trails). Please clean up after your pet—Swiss fines are high.

Fatigue Management & Rest Zones

Safe places to nap: Flüela Pass summit parking (free, quiet, but cold), Julier Pass restaurant parking (guarded overnight in summer), and Motorway rest area Thusis Süd (A13, with toilets and vending machines). For a short break, St. Moritz lake promenade offers benches and stunning views. Avoid stopping on narrow pass curves.

Hidden Off-Route Spots

Within 5 minutes off the main road, discover Wiesen (a tiny village with a beautiful church and waterfall), Guardaval castle ruins near Madulain (a 10-min walk from the road), and Mulegns (a ghost town on the Julier Pass with an abandoned hotel). These spots offer solitude and photo opportunities away from the crowds.

• Wiesen waterfall: A short walk from the H28 road, 20 m drop.
• Guardaval ruins: Free, excellent views of the Engadin.
• Mulegns: The Hotel Mulegns, a crumbling 19th-century inn, is a photographer's dream.

Geographical Shifts

The route traverses three distinct landscapes: the high alpine desert of the Flüela Pass, the lush Engadin valley with its turquoise lakes, and the dry, terraced vineyards of the Rhône valley. The Flüela Pass offers lunar-like rock formations, while the Engadin is dotted with larch forests and glacier-fed lakes like Lake Silvaplana. As you descend to Sion, the climate becomes Mediterranean, with apricot orchards and vineyard terraces climbing the hillsides.

• Flüela Pass: Above treeline, with views of the 3,000m peaks. Watch for marmots.
• Engadin: The Flaz river, St. Moritz lake, and the Swiss National Park (UNESCO Biosphere).
• Rhône valley: Dry, sunny, with medieval castles like Tourbillon and Valère overlooking Sion.

UNESCO World Heritage Sites

The route does not directly pass through a UNESCO World Heritage site, but two are within a short detour: The Rhaetian Railway in the Albula/Bernina Landscapes (a short detour from Thusis) and the Swiss Tectonic Arena Sardona (near Flims, 30 km north of the A13). Also, the entire Engadin valley is part of the UNESCO Biosphere Reserve Engadin Val Müstair, which protects the unique Alpine biodiversity.

Culinary Infrastructure

Traditional mountain restaurants (Berggasthäuser) dot the passes. On the Flüela, try the Berggasthaus Flüela for hearty cheese fondue. In the Engadin, Hauser in St. Moritz serves local bündnerfleisch (air-dried beef). For a quick bite, roadside kiosks sell Engadin nut cake (Nusstorte). On the descent to Sion, stop at Restaurant des Bains in Saxon for raclette made with local cheese.

• Flüela Pass: Berggasthaus Flüela (simple, reasonable prices).
• Zernez: Gasthaus zur Post (regional specialties).
• Silvaplana: Restaurant JULIER (pizzeria with terrace overlooking the lake).
• Sion: Le Château (traditional Valais cuisine, near the castle).