D1 (russian: МЦД-1) or Belorussko–Savyolovsky Diameter (russian: Белорусско–Савёловский диаметр) is the first of the
Moscow Central Diameters
The Moscow Central Diameters (MCD) (russian: links=no, Московские центральные диаметры (МЦД), Moskovskiye tsentralnye diametry (MTsD)) are a system of city train services on existing commuter rail lines in Moscow an ...
, a suburban network in Moscow which uses the existing infrastructure of
Moscow Railway
Moscow Railway (russian: Московская железная дорога) is a subsidiary of Russian Railways that handles half of Russia's suburban railway operations and a quarter of the country's passenger traffic. As of 2009 the railway, wh ...
and provides a regular connection between Moscow and surrounding cities. MCD-1 runs from
Lobnya
Lobnya (russian: Ло́бня) is a town in Moscow Oblast, Russia, located north west of Moscow. Population: 30,000 (1970).
History
Lobnya was founded in 1902 and granted town status in 1961.
Krasnaya Polyana in the Battle of Moscow
The Ge ...
via
Dolgoprudny
Dolgoprudny (russian: Долгопру́дный, ) is a types of inhabited localities in Russia, town in Moscow Oblast, Russia, located about north of Moscow city center. The town's name is derived from Russian "" (''dolgy prud'', lit. "long pond ...
and Moscow to
Odintsovo
Odintsovo ( rus, Одинцово, , ɐdʲɪnˈtsovə) is a city and the administrative center of Odintsovsky District in Moscow Oblast, Russia. Western suburb of Moscow. Population:
History
The village of Odintsovo was established in the late ...
.
The line was opened on 21 November 2019, at the same day as
D2. It uses the tracks and the stations of the
Savyolovsky and the
Belorussky suburban railway line
The Belorussky suburban railway line (russian: Белорусское направление Московской железной дороги) is one of eleven railway lines used for suburban railway connections between Moscow, Russia, and surrou ...
s. The length of the line is , and the travel time between the termini is 80 minutes.
These suburban directions have been connected earlier, and through suburban trains were running between them, therefore the initial investment to open the line was minimum.
Modified
Ivolga trains have been serving the line since its opening with EP2D ''('' trains.
Stations

The stations between Mark and Setun are in Moscow, others are in Moscow Oblast.
References
Moscow Railway
Railway lines in Russia
Railway lines opened in 2019
2019 establishments in Russia
{{Moscow Metro lines