The Fréjus Tunnel is the main route between Savoie and Italy — a 13 km bore connecting Modane (France) to Bardonecchia (Italy). But at around €55 one way (approximately £47) and up to €70 return, it is expensive — and when the Mont Blanc Tunnel is closed for maintenance, traffic backs up for hours. The good news: there is a free, magnificent alternative, available from mid-May to mid-November. In winter, options are considerably more limited.
Why Look for an Alternative to the Fréjus Tunnel?
The Fréjus Tunnel is the natural choice if you are heading to Italy from Lyon on the A43 motorway. The problems are twofold: the price is steep for many travellers, and during peak holiday departures or when the Mont Blanc Tunnel closes for works, traffic diverts heavily to the Fréjus, sometimes creating waits of several hours. For budget-conscious travellers, those uncomfortable in tunnels, or those looking for a more scenic crossing, an alternative route is well worth considering.
Summer: The Col du Mont-Cenis — Free and Magnificent
From the moment the snow melts — generally mid-May to mid-November — the undisputed alternative to the Fréjus Tunnel is the Col du Mont-Cenis at 2,083 metres. Here is why it makes sense:
- Same starting valley: the road to the col leaves from the same Maurienne valley as the Fréjus Tunnel approach — just a little further, in the direction of Lanslebourg-Mont-Cenis. No major detour required.
- Completely free: no toll. The saving over the Fréjus return fare is immediate and substantial.
- Genuinely beautiful: the climb to the Col du Mont-Cenis is spectacular, emerging onto a large turquoise reservoir lake at the summit — one of the most dramatic high-mountain landscapes in the Alps. The descent towards Susa in Italy is equally scenic, if somewhat long.
For those in a car or on a motorbike and happy with a more challenging mountain route, it is also possible to head towards Briançon (via the Col du Galibier if open) and cross into Italy via the Col de Montgenèvre (1,850 m) or the Col Agnel — both free passes.
Winter: North or South Detour
In winter, the situation is considerably more complicated. The Col du Mont-Cenis is closed to traffic. If you need to reach Turin or Milan from Savoie between November and May, the options are limited:
- Detour via Chamonix to use the Mont Blanc Tunnel (if open), or continue to Switzerland (Martigny) for the Grand Saint-Bernard Tunnel. This Swiss option requires purchasing a Swiss motorway vignette (around €42, valid for one year) and paying the Grand Saint-Bernard tunnel toll (around €52 return). It adds significant distance.
- Detour via the Oisans and Briançon, crossing into Italy via the Col de Montgenèvre (open in winter, but road conditions must be checked) or the Col de Larche. A very long way round for those coming from Chambéry or Lyon.
- The Côte d’Azur motorway route — going south to Nice and crossing near Ventimiglia. This avoids mountain passes entirely but adds 150+ km each way and involves significant motorway tolls.
In winter, the choice becomes a calculation between tunnel tolls and the cost — in fuel, time and fatigue — of a very long detour. For most travellers in winter, the Fréjus Tunnel remains the most practical option despite its price.
FAQ
The only fully free alternative is the Col du Mont-Cenis (2,083 m) — a magnificent mountain pass open from approximately May to November. There is no toll; the only extra cost is the additional fuel for the climb.
It depends on your destination. For Aosta, yes. For Turin — the natural destination after the Fréjus — the Swiss detour is long and expensive: you need a Swiss vignette (around €42) plus the Grand Saint-Bernard tunnel toll (around €52 return). Rarely economical for a simple return trip to Turin.
The fastest route remains the A43 motorway followed by the Fréjus Tunnel. All alternatives — the Col du Mont-Cenis, the Mont Blanc Tunnel or the Swiss route — add journey time, either through mountain road constraints or longer detours.
Around €55 one way and approximately €70 return (2025 prices). The exact fare varies slightly depending on vehicle type and season. Check the official Fréjus website for current prices.
Generally from mid-May to mid-November, depending on snowfall in a given year. The pass can close earlier in autumn if there is early snow, or open later in spring after a heavy winter. Always check current road conditions before departing.
This post is also available in fr_FR.