Aosta to Davos: Epic Alpine Road Trip Guide

The road from Aosta to Davos traverses the mighty Pennine and Lepontine Alps, crossing two international borders through the 17.7 km-long Mont Blanc Tunnel (toll: €51.70 for cars). This route connects the Italian Aosta Valley to the Swiss Grisons, passing through the 2,473 m-high Simplon Pass and the Rhine Gorge. The drive covers approximately 350 km, taking 5-6 hours without stops, but you'll want to linger.

The route cuts through four distinct Alpine zones: the granite peaks of Mont Blanc massif, the vine-terraced Rhône valley near Martigny, the wild Simplon region with its waterfalls, and the Rhine Gorge (Swiss Grand Canyon) before climbing to the Davos valley. Each shift is dramatic.

• Natural Landscapes & Attractions: Mont Blanc views from Courmayeur; the 200 m-high Cascata di Tosa near Simplon; Gorge du Trient; Lake Ritóm (detour 15 min from Andermatt); the Flüela Pass descent into Davos with views of the Dischma valley.
• UNESCO World Heritage Sites: The route skirts the Swiss Tectonic Arena Sardona (short detour near Flims) and the Rhaetian Railway in the Albula/Bernina landscapes (Davos is a gateway). No direct UNESCO on the main road, but the Mont Blanc massif is a candidate.

Local Commerce & Culture: In Aosta, try Fontina DOP cheese and mocetta (cured chamois). At the Martigny market (Saturdays), pick up raclette and Swiss wine. In Brig, shop for Walliser Roggenbrot (rye bread). Near Davos, stop at a Bergbeiz for Nusstorte (nut cake) and Graubünden Bündnerfleisch.

The route's backbone is the A5/E25 from Aosta to the Mont Blanc Tunnel, then Swiss motorways A9, A2, and cantonal roads. The total toll cost is around €55 (Mont Blanc Tunnel plus Swiss vignette required for motorways – CHF 40). Fuel stations are well-spaced: every 30-50 km on the Italian side, but less frequent at high altitude.

• Best stops Aosta to Davos: Courmayeur, Martigny, Brig, Andermatt.
• How long to drive Aosta to Davos: 5-6 hours pure driving; plan 8-9 hours with stops.
• Is it worth driving Aosta to Davos: Absolutely – the scenery is world-class.

Fuel costs for the 350 km trip: assuming 8 L/100 km consumption and €1.80/L (average Italy/Switzerland), expect ~€50-55. Topography demands fuel-efficient driving: use engine braking on descents, maintain steady speed on motorways. Fill up in Aosta (cheaper) or Brig (moderate) as mountain stations charge premiums.

Infrastructure Safety & Road Quality: The Mont Blanc Tunnel is well-lit and monitored, but queues can occur. Swiss motorways are immaculate; the Simplon and Flüela passes are narrow, with sharp bends – drive defensively. Night illumination is limited on pass roads; carry a headlamp.

• Family and Child Suitability: Parc de l’Aventure in Martigny (nature play park); Swiss Transport Museum in Brig (interactive); Aareschlucht (gorge walk near Meiringen, detour); Davos Adventure Park (zip line and climbing).
• Pet-Friendly Framework: Dogs allowed in Mont Blanc Tunnel (€15 fee, must wear muzzle). Walk spots: Courmayeur river trail, Simplon village meadows, and Lake Davos. Pet-friendly cafés: Café du Simplon (dogs water bowls) and Bistro Extra in Davos.

Fatigue Management & Rest Zones: Recommended stops: Aire du Mont Blanc (rest area with view, A5); Simplon Pass parking (elevation 2,473 m, safe for nap – but carry warm blankets); Andermatt motorway rest area (24h services). Hidden Off-Route Spots: The abandoned village of Briè above Aosta (5 min from A5 exit); the 19th-century iron bridge at Gondo (Simplon valley); the tiny hamlet of Wiesen near Davos with a historic railway viaduct.

For more guidance, see how to find the best stops and hidden gems between cities.

Things to do between Aosta and Davos: visit Fort Bard (Aosta), walk the Trient gorge, taste wine in Charrat, hike to the Lämmerenhütte (Simplon), explore the Gotthard Pass, and ride the Parsenn funicular in Davos.