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 2026-06-22
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
45,889
Europe
33,679
North America
16,181
South America
3,132
Australia & Oceania
329
Africa
310
67
Countries on the map
99,520
Active segments (length)
4,118
Under construction
1,461
Proposed
5,579
In the pipeline (5.6% of active network)
Australia
Fastest build rate: 69.0% · 227 under construction
Turkey
Most proposed lines: 352 proposed
Top countries
By continent
Build activity
52
Countries actively building
44
Countries with proposals