Blois to Sion Road Trip: Loire Valley to Swiss Alps Guide

This 550 km route from Blois (47.5861° N, 1.3359° E) to Sion (46.2276° N, 7.3591° E) traces the gradual climb from France’s Loire Valley into the Swiss Alps. The driving time is approximately 6 hours without stops, but the journey deserves at least two days to absorb the landscapes. Along the way, you'll cross through four French regions and the canton of Valais.

The route utilizes the A85, A71, A6, and finally the Swiss A9 motorway. One peculiarity: near Vallorbe, the A9 narrows into a single lane through the Jura passes, so expect reduced speeds. The best stops Blois to Sion include Bourges, Beaune, and Lausanne – each offering a distinct cultural pause.

If you are wondering how long to drive Blois to Sion, the pure transit time is 5.5-6.5 hours, but factoring in border checks and rest stops, budget 7-8 hours. Is it worth driving Blois to Sion? Absolutely – the ever-changing scenery from flat vineyards to dramatic Alpine foothills makes this a quintessential European road trip. For more on optimizing your stops, see how to find the best stops and hidden gems between cities.

The French autoroutes are among Europe's safest, with speed cameras and emergency phones every 2 km. However, the Jura section (A9 from Vallorbe to Lausanne) has many tunnels and steep gradients; reduce speed and use low beams. In winter, snow is common above 800 m – check tire requirements (winter tires mandatory in Switzerland from December to March).

• Family suitability: Kids will love the Parc des Félins (big cat park) near Lumigny (off A5, 30 min detour). The playground at Aire de la Plaine Dijonnaise has a climbing structure. In Sion, the Valère Basilica and underground lake (Lac Souterrain de Saint-Léonard) fascinate children.
• Pet-friendly: Most rest areas allow dogs on leashes. Some F1 hotels in France accept pets for €5 extra. In Switzerland, the Hotel du Rhône in Sion is pet-friendly.

Fatigue management: Stop every 2 hours. Strategic rest zones include Aire de Bourges Marmagne (km 85) with a 24-hour café, and Aire de la Plaine Dijonnaise (km 250) with a panoramic terrace. The Swiss A9 has a rest area at St-Prex (km 450) with lake views. If you need a nap, many rest areas have designated quiet zones. For a full list of hidden gems, refer to how to find the best stops and hidden gems between cities.

The first leg (Blois to Beaune) runs mainly on toll highways (A85, A71, A6). Expect to pay about €25 in tolls. The French A6 is well-maintained but can be busy near Lyon – avoid the Mâcon–Lyon stretch during peak hours (8:00-9:30 and 17:00-19:00). Once you cross into Switzerland at Vallorbe, you enter the A9, which requires a Swiss vignette (€40, valid for a year).

• Fuel costs: Petrol stations are frequent every 20-30 km on French highways. In the Jura region, stations are sparser; fill up at Beaujeu or Les Rousses before the border. Swiss fuel is 20-30% more expensive.
• Rest areas: Major rest stops like Aire de Bourges Marmagne (A85) have clean toilets, playgrounds, and restaurants. The Aire de la Plaine Dijonnaise (A6) offers panoramic views of the Burgundy vineyards.
• Road quality: Excellent on French autoroutes; narrow and winding in Jura passes (A9 near Vallorbe). Swiss A9 is good but has sharp curves at Montreux.

For electric vehicles, charging stations are available at most rest areas (Ionity, Total, Fastned). Plan a 30-minute charging stop near Dijon. How long to drive Blois to Sion including charge stops: add 1 hour for EVs. Is it worth driving an EV? The scenery makes it pleasant, but the Jura ascent drains batteries faster – keep a buffer.

Departing Blois, the Loire Valley presents gentle hills and châteaux – an agricultural mosaic of sunflowers and wheat. The A85 cuts through the Sologne forests, a wetland region known for hunting and wild orchids. As you approach Bourges, the landscape opens into the Berry plains, dotted with old stone barns.

• UNESCO sites: The Loire Valley (Blois châteaux) and the historic center of Bourges (Cathédrale Saint-Étienne) are World Heritage sites. In Beaune, the Hospices de Beaune is a must-see.
• Hidden off-route spots: Just off the A6 at Nuits-Saint-Georges (exit 24.1), the Château du Clos de Vougeot is a stunning Burgundy vineyard estate. In the Jura, detour to the Lac des Rousses (15 minutes from the A9) for a glacial lake swim.

Local commerce along the route is rich. In Burgundy, roadside stalls sell Crémant de Bourgogne and mustard. The Swiss Valais region is famous for Raclette cheese – pick some up at a farm shop near Martigny. Things to do between Blois and Sion include wine tastings in Beaune, chocolate shopping in Neuchâtel (a short detour), and visiting the Chillon Castle on Lake Geneva.