RailsMapsMetro
Subway and metro systems by country. Track active segments, lines under construction and proposals — from the world's biggest systems to newer networks still taking shape.
Data from OpenStreetMap contributors — thorough where the community is active, thinner where it isn't · Updated 2026-10-18
Global insights
Top countries
Top 5 — Metro
Ranked by active segment count (not country size).
Continental breakdown
Metro segments by continent
Bar length reflects mapped segment totals per continent.
Asia
47,726
Europe
33,078
North America
16,267
South America
3,205
Australia & Oceania
331
Africa
329
68
Countries on the map
100,936
Active segments (length)
3,480
Under construction
1,571
Proposed
5,051
In the pipeline (5.0% of active network)
Australia
Fastest build rate: 65.6% · 217 under construction
Turkey
Most proposed lines: 402 proposed
Top countries
By continent
Build activity
49
Countries actively building
44
Countries with proposals