O-Train

O-Train
Overview
OwnerCity of Ottawa
LocaleOttawa, Ontario
Transit type
Number of lines
3 (+1 under construction)
Number of stations
25 (+16 under construction)
Daily ridership
89,500 (weekdays, Q2 2026)
Annual ridership
26,523,100 (2025)
Operation
Began operation
October 15, 2001 (2001-10-15)
OperatorOC Transpo
CharacterAt-grade, elevated and underground
Technical
System length35.5 km (22.1 mi) (+27 km (17 mi) under construction)
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Top speed80 km/h (50 mph)
System map
Parking
Trim
(2026)
Parking
Place d'Orléans
(2026)
Convent Glen
(2026)
Parking
Jeanne d'Arc
(2026)
Montréal
(2026)
Parking  Blair 
Cyrville
St-Laurent
Tremblay
Transitway (Ottawa)#Southeast Hurdman
Lees
uOttawa
Rideau
Parliament
Lyon
Pimisi
 Bayview 
Corso Italia
Tunney's
Pasture
Dow's Lake
Westboro
(2027)
Carleton
Kichi Zìbì
(2027)
Mooney's Bay
Walkley Transitway (Ottawa)#Southeast
Sherbourne
(2027)
Greenboro Transitway (Ottawa)#Southeast Parking
New Orchard
(2027)
South
Keys
Transitway (Ottawa)#Southeast
Uplands
Lincoln Fields
(2027)
 Airport  Ottawa Macdonald–Cartier International Airport
Iris
(2027)
Leitrim Parking
Parking
Algonquin
(2027)
Bowesville Parking
Queensview
(2027)
 Limebank 
Pinecrest
(2027)
Bayshore
(2027)
Moodie
(2027)
Key
Line 1
Line 2
Lines 1 & 3
Line 4
Line 3
non-revenue
tracks

Handicapped/disabled access All stations are accessible

The O-Train is an urban rail transit system in Ottawa, Ontario, Canada, operated by OC Transpo. The O-Train system consists of three lines, all of which are fully grade-separated. As of May 2026, Line 1 is currently being extended and Line 3 will be constructed as part of the Stage 2 project, with new segments being phased in between 2026 and 2027.

The O-Train network currently operates one light rail line, Line 1, and two diesel light rail lines, Line 2 and Line 4. Line 1 travels in a 2.8 km tunnel in the downtown core, and the rest of the network continues to operate grade-separated on surface-level, trenched, or elevated tracks.

Line 1 is being extended in both directions, and the eastward extension to Trim station in Orleans was most recently scheduled to open first in Q2 2026, but there is no current timeline for its opening since testing has not yet begun. By 2027, the westward expansion of Line 1 to Algonquin station and the construction of new Line 3 to Moodie station in the west end are expected to be completed. These expansions will bring the system's total length to 64.5 km (40.1 mi), with four lines and 41 stations.