N-400 road (Spain)

N-400  Carretera Nacional N-400
Route information
Length:	180 km (110 mi)
Major junctions
From:	Toledo
To:	Cuenca
Highway system
National roads in Spain

The N-400 is a highway in Spain from Toledo to Cuenca. It is being upgraded to the Autovía A-40.

It starts at the junction of the N-401, and the Autovía A-42 east of Toledo.

It heads east to Aranjuez and the Autopista R-4 and Autovía A-4. It then heads east with a junction to the N-301. At Taracón is a junction with the Autovía A-3.

The N-400 then heads through the Altos de Cabrejas to Cuenca and has been partly upgraded to the Autovía A-40.