The Longueau-Boulogne railway is a French railway which runs from a junction with the Paris-Lille railway at Longueau

Longueau

Longueau is a commune in the Somme department in Picardie in northern France.-Geography:Longueau is situated southeast of Amiens, a suburb just by the airport, on the N29 road-Population:-Places of interest:The town was once a railway centre...

 to the coastal port of Boulogne. A double track
railway it is 171 kilometres (106.3 mi) long. Until the start of the Eurostar

Eurostar

Eurostar is a high-speed railway service connecting London with Paris and Brussels. All its trains traverse the Channel Tunnel between England and France, owned and operated separately by Eurotunnel....

 service from London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 to Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 in 1994 via LGV Nord

LGV Nord

The LGV Nord is a French 333-kilometre long high speed rail line, opened in 1993, that connects Paris to the Belgian border and the Channel Tunnel via Lille....

 it was the main route for the boat train

Boat train

A boat train is a passenger train which connects with a passenger ship, such as a ferry or ocean liner. Through ticketing is normally available. -Notable named boat trains:*The Flèche d'Or Paris Gare du Nord to Calais...

s to Paris which met the ships carrying passengers from Great Britain

Great Britain

Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

. the line is used by Intercités

Intercités

Intercités is a brand name used by France’s national railway company, SNCF, to denote medium-distance passenger rail services in France. SNCF established the Intercités system in January 2006 as an upgrade of the former Corail network...

 services from Paris to Boulogne, TGV

TGV

The TGV is France's high-speed rail service, currently operated by SNCF Voyages, the long-distance rail branch of SNCF, the French national rail operator....

 services from Rang-du-Fliers

Rang-du-Fliers

Rang-du-Fliers is a commune in the Pas-de-Calais department in the Nord-Pas-de-Calais region of France.-Geography:Rang-du-Fliers is located on the Côte d'Opale , 4 miles from the beach and 5 miles southeast of Montreuil-sur-Mer on the D917 road.-History:Rang-du-Fliers became a commune in 1870,...

 via Calais-Fréthun

Gare de Calais-Fréthun

Calais-Fréthun is a mainline and international railway station in the suburbs of Calais, France, one of three stations serving the town. the other two are Calais-Ville in the town centre and Gare des Fontinettes in the suburbs....

 to Lille-Europe and local TER

Ter

Ter is a prefix or suffix designating the third instance of a thing, thus following bis and preceding quater.Ter can also refer to:* River Ter, in Essex;* Ter , the debut album of American rock band Sweet Water...

 Picardie

TER Picardie

TER Picardie is the regional rail network serving the Picardy region of France. It is based at the Gare d'Amiens in the town of Amiens.- Rail :- Road :- Multiple units:* SNCF Class Z 26500* SNCF Class X 4630* SNCF Class X 72500...

 and Nord-Pas-de-Calais

TER Nord-Pas-de-Calais

TER Nord-Pas-de-Calais the regional rail network serving Nord-Pas-de-Calais région, France.- Network :*Lille - Calais - Boulogne-sur-Mer *Lille - Dunkerque *Lille - Arras -Multiple units:...

 services.

The line was built by Compagnie des chemins de fer du Nord from 1847 to 1848. The section from Longueau through Amiens and to the junction with the line to Rouen is electrified at 25kV 50Hz. From 2009 to 2010 the line from Boulogne to Rang-du-Fliers was also electrified to allow a TERGV service to run.