B5) is a German federal highway running in a northwesterly to southeasterly direction from the Danish border near Niebüll to Frankfurt (Oder).

In Berlin B5 forms among others the following squares and streets Heerstraße, Theodor-Heuss-Platz, Kaiserdamm, Straße des 17.

In 1934 the Fernverkehrsstraßen were renamed into Reichsstraßen (literally in English: Reich's streets), but the numbering remained Reichsstraße 5 or R 5.

F 5 gradually lost its function as transit route to new built autobahns (today's A 19 and A 24) until it was rededicated for intra-GDR traffic only on 21 December 1987.

Frankfurt (Oder) Müncheberg Herzfelde Dahlwitz Freidrichsfelde Berlin (Alexanderplatz) Wustermark (Nauen - Staaken Expressway) Nauen Friesack Wusterhausen (Dosse) Kyritz Perleberg Karstädt Grabow (L072) Grabow (A14) Boizenburg (Elbe) Bergedorf Bergedorf - Hamm Expressway Hamburg Stellingen - Pinneberg Pinneberg - Elmshorn (A23) Elmshorn (K23) Elmshorn - Itzehoe (A23) Itzehoe (Bekmunde) - Wilster - Brunsbüttel Diekshörn - Kattrepel Marne Helde - Freidrichstadt (through Tönning and B202) Husum Bredstedt [1][2]