Line 1 The , 22 station Line 1 was the first line to be built; construction began in 1999, with the inauguration of taking place on 24 April 2011. The extension made
Mashhad the first city in Iran with a
mass transit connection to the airport.
Line 2 Line 2 is a
conventional metro, running north–south for between
Shahid Fakouri and
Tabarsi with 13 stations. Excavation was done by two
Tunnel Boring Machines (TBMs). From February 2017 limited operation of the first phase of Line 2 began. The line connects to the
inter-urban railway system at
Raah Ahan. On 20 March 2018 pilot operation of
Shariati, the first
interchange station in the system, began. The station was officially inaugurated on 7 May 2018, in a ceremony attended by Iranian president
Hassan Rouhani. On July 27, 2019,
Shahid Kaveh was opened. The line was further extended to
Shahid Fakouri on May 3, 2025.
Line 3 Line 3's construction began in 2015, with TBMs doing the excavation. By 2020, of tunnels had been excavated, with the full route expected to be long and serve 24 stations. The line's first phase entered partial operation on 8 May 2025, with an initial 3 station route between
Shohada and
Imam Reza Terminal.
Line 4 Another additional line is planned. Line 4 with length has been approved and it will have 15 stations. Tunnel Excavation of Line 4 in Summer 2021 was started and is currently underway. ==Rolling stock==