Masovian Railways
Masovian Railways, in Polish Koleje Mazowieckie, is a regional rail operator in the Masovian Voivodeship of Poland.
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History
The company was founded in 2004 as a joint venture of the Masovian Voivodeship, with 51% shares, and the then government-owned PKP Przewozy Regionalne, with 49% shares, to handle local passenger traffic in the Voivodeship. It started operating on 1 January 2005. Since the end of 2007 Masovian Railways has been fully owned by the Masovian Voivodeship.In November 2025, the Warsaw-Lublin rail line on the was a target of explosive sabotage during the Russia-Ukraine conflict. The rail was reportedly sabotaged to prevent resources from being given to Ukraine.
Rolling stock
At the beginning, the rolling stock consisted of old electric multiple units taken over from the Polish State Railways. These were gradually modernised, and further units purchased second-hand from other operators. Later on, the company purchased or leased new rolling stock. As of 2010 the Masovian Railways had just under 200 PKP class EN57, five EN71 and two EW60. Additionally, the company purchased seven DB Class 627 railcars and four 628 diesel multiple units to serve on non-electrified routes.In 2008 the company bought 10 modern Stadler FLIRT EMUs and 26 Bombardier Double-deck Coaches along with 11 cab cars. At the beginning, Masovian Railways leased 11 EU07 electric locomotives from PKP Cargo to work these trains, since 2011 they are pulled by TRAXX P160 DC purchased from Bombardier.
In 2011 the company bought 16 PESA ELF EMUs designated class EN76 and 4 SA135 DMUs also from PESA.
In January 2018 the company ordered 71 Stadler Flirt EMUs.
As of May 2021, the company owns, leases, or hires the following rolling stock:
Railway lines
Lines across the [Warsaw Cross-City Line]
- R1 line to Skierniewice, through Pruszków, Grodzisk Mazowiecki, Żyrardów
- R2 line to Łuków, through Sulejówek, Mińsk Mazowiecki, Siedlce
- R3 line to Kutno, through Sochaczew, Łowicz
- R6 line to Tłuszcz, through Wołomin
- R7 line to Dęblin, through Otwock, Pilawa
- RL express line to Modlin
Lines through Warszawa Gdańska">Warszawa Gdańska railway station">Warszawa Gdańska and Warszawa Wileńska">Warszawa Wileńska railway station">Warszawa Wileńska stations
Warszawa Gdańska
- R80 line to Góra Kalwaria, Radom Główny, Skarżysko Kamienna through Piaseczno, Warka
- R90 line to Działdowo, Mława through Legionowo, Nasielsk
Warszawa Wileńska
Minor lines
- R21 line from Siedlce to Czeremcha
- R31 line from Sierpc, through Płock, to Kutno
- R61/62 line from Tłuszcz to Szczytno
- R81 line from Radom to Dęblin
- R82 line from Radom to Drzewica
- R91 line from Nasielsk to Sierpc
- R92 line from Legionowo to Tłuszcz
Regional Express
Mazovia Railways is launching regional express services on the following routes:| Name | Meaning | Designation | Route |
| Wiedenka | a female inhabitant of Vienna but refers to common name of the Warsaw–Vienna railway line through Skierniewice | RE1 | Warszawa Wschodnia – Skierniewice |
| Bolimek | refers to Bolimów Landscape Park | RE1 | Warszawa Wschodnia – Żyrardów/Siedlce – Skierniewice |
| Łukowianka/Łukowiak | a female/male inhabitant of Łuków | RE2 | Warszawa Służewiec – Łuków Warszawa Zachodnia – Łuków |
| Czeremszak | diminutive of the town name ‘Czeremcha’ | RE21 | Warszawa Wschodnia – Czeremcha |
| Bzura | a name of the river passing through Łowicz, Sochaczew | RE3 | Warszawa Wschodnia – Łowicz Główny |
| Mazoviak/Mazovia/Siemowit | RE31 | Warszawa Wschodnia – Płock | |
| Czyżyk | a name of bird or diminutive of the town name ‘Czyżew’ | RE6 | Warszawa Zachodnia – Czyżew Czyżew – Grodzisk Mazowiecki |
| Kurpiak | a name of inhabitant from "Kurpie" ethnic group | RE61 | Warszawa Zachodnia – Ostrołęka |
| Radomiak | a male inhabitant of Radom | RE80 | Warszawa Wschodnia – Skarżysko-Kamienna |
| Radomianka | a female inhabitant of Radom | RE80 | Warszawa Wschodnia – Radom Główny |
| Kamienna | a second part of city name 'Skarżysko-Kamienna' | RE80 | Warszawa Gdańska – Skarżysko-Kamienna Skarżysko-Kamienna – Ciechanów |
| Ciechan | diminutive of the town name ‘Ciechanów’ | RE90 | Warszawa Zachodnia – Ciechanów |
| Działdowiak | diminutive of the town name ‘Działdowo’ | RE90 | Warszawa Zachodnia – Działdowo |
| – | – | RE90 | Warszawa Zachodnia – Nasielsk |
| – | – | RE91/92 | Sierpc – Tłuszcz |
Other express trains
Słoneczny from Warsaw to Gdynia or Ustka, through Legionowo, Nasielsk, Działdowo, Gdańsk- Słoneczny bis
- Dragon from Warsaw to Krakow