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 2026-05-30
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
45,646
Europe
33,464
North America
16,046
South America
3,115
Africa
308
Australia & Oceania
253
67
Countries on the map
98,832
Active segments (length)
4,140
Under construction
1,490
Proposed
5,630
In the pipeline (5.7% of active network)
Australia
Fastest build rate: 109.1% · 276 under construction
Turkey
Most proposed lines: 354 proposed
Top countries
By continent
Build activity
53
Countries actively building
45
Countries with proposals