Route de l'Hongrin

Route de l'Hongrin is a scenic mountain road in Switzerland

Route de l'Hongrin is the name of a challenging scenic mountain drive located in the canton of Vaud, in Switzerland. Running through «Petit Hongrin», a military zone, the road is open on weekends and during the summer holidays.

Is Route de l'Hongrin paved?

Tucked away in the western part of the country, the road is 35.2km (21.87 miles) long, running from Aigle, the capital of the district of Aigle in the canton of Vaud to Lac de l'Hongrin (Barrage De L'Hongrin) at an elevation of 1.255m (4,117ft) above the sea level.

Is Route de l'Hongrin challenging?

The road is very narrow and challenging in parts. It’s mostly paved. Set high in the Vaudois Alps, and running through vineyards and light woods, the most famous section of the drive is Tunnel de les Agites, also known as Tunnel de la Sarse. It’s a very narrow and rough tunnel built between 1938-1940. This is a single lane tunnel and during weekends and bank holidays users must adhere to a strict timetable for one-way traffic. Cyclists need to be aware that the tunnel, carved out of the rock, has no other illumination other than a few shafts of natural light. The road runs through one of the most secret destinations of Switzerland and tops out at Les Agites, a high mountain pass at an elevation of 1.569m (5,147ft) above the sea level. The climb is roughly 13 kms at 9%. In parts, extremely steep even +20% and well above 10% for much of the way.

Is Route de l'Hongrin open?

From 1st July to 15th August, the road is open, with possible delays due to military operations. Weekends and bank holidays from 7h to 19h: ascent (direction Lécherette) during the first quarter of each hour (00 to 15), descent (direction Corbeyrier) during the third quarter of each hour (30-45).
From 1st June to 30th June and from 16th August to 31st October, the road is open only on weekends (Saturday and Sunday).
From 1st November to 31st May, the road is closed to all traffic.
Pic: Joachim Segui


To use information contained on this site is to do so at your own risk. is not responsible for the information contained in these pages. The website is for information purposes only and we assume no liability for decisions made as a result of the information provided here. You are still completely responsible for your decisions, your actions, and your safety.