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 2026-09-19
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
47,547
Europe
33,173
North America
16,511
South America
3,202
Australia & Oceania
329
Africa
314
68
Countries on the map
101,076
Active segments (length)
3,562
Under construction
1,547
Proposed
5,109
In the pipeline (5.1% of active network)
Australia
Fastest build rate: 69.6% · 229 under construction
Turkey
Most proposed lines: 407 proposed
Top countries
By continent
Build activity
49
Countries actively building
44
Countries with proposals