C-17 or Eix del Congost is a primary highway

Highway

A highway is any public road. In American English, the term is common and almost always designates major roads. In British English, the term designates any road open to the public. Any interconnected set of highways can be variously referred to as a "highway system", a "highway network", or a...

 in Catalonia

Catalonia

Catalonia is an autonomous community in northeastern Spain, with the official status of a "nationality" of Spain. Catalonia comprises four provinces: Barcelona, Girona, Lleida, and Tarragona. Its capital and largest city is Barcelona. Catalonia covers an area of 32,114 km² and has an...

, Spain

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

. According to the 2004's new coding for primary highways managed by the Generalitat de Catalunya

Generalitat de Catalunya

The Generalitat of Catalonia is the institution under which the autonomous community of Catalonia is politically organised. It consists of the Parliament, the President of the Generalitat of Catalonia and the Government of Catalonia....

, the first number (C-17) indicates that is a south-northbound highway, whereas the second number (C-17) indicates that is the seventh westernmost .

The highway starts at the city of Barcelona

Barcelona

Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of...

 and heads mainly northbound towards the towns of Mollet del Vallès

Mollet del Vallès

Mollet del Vallès is a municipality in the comarca of the Vallès Oriental in Catalonia, Spain. It is situated in the valley of the Besòs river, and is an important communications hub from Barcelona towards the north: the AP-7 Motorway passes through the municipality, as do the RENFE railway lines...

, Granollers

Granollers

Granollers is a city near Barcelona, in Catalonia, Spain. It is the capital and most densely populated city of the comarca of Vallès Oriental.Granollers is a bustling business centre, and many industries are located there...

, Vic

Vic

Vic is the capital of the comarca of Osona, in the Barcelona Province, Catalonia, Spain. Vic's location, only 69 km far from Barcelona and 60 km from Girona, has made it one of the most important towns in central Catalonia.-History:...

 and Ripoll

Ripoll

Ripoll is the capital of the comarca of Ripollès, in the province of Girona, Catalonia, Spain. It is located on confluence of the Ter River and its tributary Freser, next to the Pyrenees near the French border...

. Its path follows the valleys of Congost and upper Ter rivers.

From Mollet del Vallès

Mollet del Vallès

Mollet del Vallès is a municipality in the comarca of the Vallès Oriental in Catalonia, Spain. It is situated in the valley of the Besòs river, and is an important communications hub from Barcelona towards the north: the AP-7 Motorway passes through the municipality, as do the RENFE railway lines...

 to Vic

Vic

Vic is the capital of the comarca of Osona, in the Barcelona Province, Catalonia, Spain. Vic's location, only 69 km far from Barcelona and 60 km from Girona, has made it one of the most important towns in central Catalonia.-History:...

, the road is already upgraded to freeway. The Vic

Vic

Vic is the capital of the comarca of Osona, in the Barcelona Province, Catalonia, Spain. Vic's location, only 69 km far from Barcelona and 60 km from Girona, has made it one of the most important towns in central Catalonia.-History:...

-Ripoll

Ripoll

Ripoll is the capital of the comarca of Ripollès, in the province of Girona, Catalonia, Spain. It is located on confluence of the Ter River and its tributary Freser, next to the Pyrenees near the French border...

section is currently in process of being upgraded.