Previous measure: 31% of arrivals were within five minutes of the timetable (978 arrivals over 18 days). The report card below uses the newer one-minute-early to five-minutes-late measure when it has readings.
ᐊᖁᑦ 21: Canotek ⇄ Blair
Slowest stretches · running measure, Oct 8 to Nov 4
Of the slowest stretches, the most time is lost between BLAIR D and CANOTEK / AD. 5350.
- +2.4 ᒥᓂᑦBLAIR D – CANOTEK / AD. 5350
32 km/h seen, 50 km/h in the timetable - +0.9 ᒥᓂᑦCANOTEK / AD. 5350 – CANOTEK / RAINBOW
22 km/h seen, 28 km/h in the timetable
How we measure →
This is the running reliability measure, not the report-card measure: for each stretch between two stops, how long buses really took against how long the timetable allows, over 26 counted days at all hours. It shows which stretches run behind, not how often. The report-card measure replaces it as soon as it has enough weekdays.
Example: a one-kilometre stretch the timetable runs at 20 km/h takes 3 minutes; if buses averaged 15 km/h it took 4, so 1 minute is lost there.
The line right now · 2:45 p.m.
The line right now · 2:45 p.m.
No bus is reporting its position on the line now; next scheduled 4:05 p.m.
- CANOTEK / AD. 535080 min sched.
- CANOTEK / AD. 537080 min sched.
- CANOTEK / AD. 542080 min sched.
- CANOTEK / AD. 548081 min sched.
- CANOTEK / AD. 551081 min sched.
- CANOTEK / AD. 536982 min sched.
- CANOTEK / AD. 535082 min sched.
- CANOTEK / RAINBOW83 min sched.
- SHEFFORD / MONTRÉAL83 min sched.
- MONTRÉAL / SHEFFORD83 min sched.
- BLAIR C88 min sched.
Stops and scheduled times from OC Transpo’s timetable (GTFS, 2026-10-30). Every time under a stop is from the timetable (sched.), not a prediction.
Right now on Route 21
0 busesOpen on the map
0 noticesfrom OC Transpo
Planned change · 2026-10-30service change
Dated service
Trips scheduled that day
The timetable, notices and what the live feed says are shown apart. Seeing a bus on the map does not prove you can board it.
November 4, 2026 · 5 trips in the retained timetable · retained notices; capture coverage unverified
In short: 5 with a matched position · 0 with no matching position (to investigate) · 0 with an unknown outcome.
- 07:10– 07:16Trip 25076040Vehicle position matchedFirst / last feed position: 6:27 a.m. EST / 7:23 a.m. EST; not actual start or end times.
- 08:12– 08:18Trip 12602040Vehicle position matchedFirst / last feed position: 8:20 a.m. EST / 8:30 a.m. EST; not actual start or end times.
- 08:40– 08:47Trip 7028040Vehicle position matchedFirst / last feed position: 8:00 a.m. EST / 9:05 a.m. EST; not actual start or end times.
- 16:05– 16:13Trip 2190040Vehicle position matchedFirst / last feed position: 3:48 p.m. EST / 4:19 p.m. EST; not actual start or end times.
- 17:06– 17:14Trip 34131040Vehicle position matchedFirst / last feed position: 4:38 p.m. EST / 5:15 p.m. EST; not actual start or end times.
More on Route 21
0 busesOpen on the map
Planned change · 2026-10-30service change
Would you count on route 21?
No sign-in needed. A vote from a device that is not signed in counts a little less than one from an account, and a person who rates many routes counts a little less on each, so no one voice outweighs the rest.
Cancellations on this route
How cancellations are counted2 partial-capture days not counted.
11 scheduled trip with a counted cancellation notice, Thu, Oct 8 to Wed, Nov 4.
Not counted: 0 trips with qualifying later matching vehicle observations and 0 for trips not in that day’s timetable.
Hours with the most cancellations: 7 a.m. (1)
Latest cancelled trips
- Tue, Oct 27, Trip at 07:10
OC Transpo gives no reason for single trips, so none is shown.
Did not come (no bus seen, no notice), last 7 days: none among the trips we could check.
ᓄᓇᓕᐅᑉ ᐊᖅᑯᑎᓂᒃ ᐱᓕᕆᓂᖓ ᐅᓇ ᐊᖅᑯᑎ ᖃᓂᒋᔮᓂ
All road work on AlertsRoad work and event closures the City of Ottawa has published, measured as near this route’s path. Near is not proof that the bus is detoured: check the operator’s alerts for that.
No City road work is listed near this route right now.
Source: City of Ottawa open data. City road work map
More on Route 21
- Other daysOctober 2026Days →
- Today’s timelineArchived bus positions in ReplayReplay →
- Road work on this routeStops moved and time added by road workWorks →
- Service change scorecardHow a service change didScorecard →
- Crowding and service deliverySTO crowding, rail, trips deliveredCrowding →
- Where the numbers come fromOC Transpo timetable and live bus positionsSources →
- Page not loading?The timetable still opensᐆᑦᑐᕆᑦ ᐊᒻᒪ
- ᐅᓂᒃᑳᖅ ᐃᓘᓐᓇ
- ᐅᖃᐅᑎᓗᒍ ᑲᑎᒪᔨᑦ
- Fix this routePropose a change to this route in Design the networkFix this →
- Change this routeDraw a different route or timetable in Design the networkChange this route →
Explore the route
Choose a destination, then select a stop on the map or route diagram.
0 verified representative shapes · 16 stops
Dashed lines connect the published stop order; they are not claimed street paths
Map source and limits
A solid line matches one published representative trip whose stops and order were checked. Another trip with the same stops may follow a different shape. Dashed lines connect published stops only; they do not describe streets.
This view does not show live vehicle positions.
All published paths
Where does it go?
Different journeys can take different branches. Choose a published path above to see its stops in order.
You can also select any stop on the map to open its departure board.
Published stop order does not prove that a vehicle is running now.
Schedule and source records
BLAIR D to CANOTEK / RAINBOW · 13 stops
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
10 official service records
1 added date and 22 removed dates
Review the official service records
Service 10
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Removed dates: Oct 30, 2026
Service 11
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Service 12
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Service 13
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Added dates: Oct 30, 2026
Removed dates: Nov 6, 2026, Nov 13, 2026, Nov 20, 2026, Nov 27, 2026
Service 3
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Service 4
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Removed dates: Nov 3, 2026, Nov 10, 2026, Nov 17, 2026, Nov 24, 2026
Service 6
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Removed dates: Nov 2, 2026, Nov 9, 2026, Nov 16, 2026, Nov 23, 2026, Nov 30, 2026
Service 7
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Service 8
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Removed dates: Nov 5, 2026, Nov 12, 2026, Nov 19, 2026, Nov 26, 2026
Service 9
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Removed dates: Nov 4, 2026, Nov 11, 2026, Nov 18, 2026, Nov 25, 2026
Service records for this stop pattern
Service 10
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Removed dates: Oct 30, 2026
Service 11
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Service 12
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Service 13
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Added dates: Oct 30, 2026
Removed dates: Nov 6, 2026, Nov 13, 2026, Nov 20, 2026, Nov 27, 2026
Service 3
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Service 4
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Removed dates: Nov 3, 2026, Nov 10, 2026, Nov 17, 2026, Nov 24, 2026
Service 6
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Removed dates: Nov 2, 2026, Nov 9, 2026, Nov 16, 2026, Nov 23, 2026, Nov 30, 2026
Service 7
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Service 8
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Removed dates: Nov 5, 2026, Nov 12, 2026, Nov 19, 2026, Nov 26, 2026
Service 9
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Removed dates: Nov 4, 2026, Nov 11, 2026, Nov 18, 2026, Nov 25, 2026
CANOTEK / AD. 5350 to BLAIR C · 11 stops
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
10 official service records
1 added date and 22 removed dates
Review the official service records
Service 10
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Removed dates: Oct 30, 2026
Service 11
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Service 12
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Service 13
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Added dates: Oct 30, 2026
Removed dates: Nov 6, 2026, Nov 13, 2026, Nov 20, 2026, Nov 27, 2026
Service 3
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Service 4
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Removed dates: Nov 3, 2026, Nov 10, 2026, Nov 17, 2026, Nov 24, 2026
Service 6
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Removed dates: Nov 2, 2026, Nov 9, 2026, Nov 16, 2026, Nov 23, 2026, Nov 30, 2026
Service 7
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Service 8
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Removed dates: Nov 5, 2026, Nov 12, 2026, Nov 19, 2026, Nov 26, 2026
Service 9
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Removed dates: Nov 4, 2026, Nov 11, 2026, Nov 18, 2026, Nov 25, 2026
Service records for this stop pattern
Service 10
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Removed dates: Oct 30, 2026
Service 11
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Service 12
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Service 13
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Friday
Added dates: Oct 30, 2026
Removed dates: Nov 6, 2026, Nov 13, 2026, Nov 20, 2026, Nov 27, 2026
Service 3
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Service 4
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Removed dates: Nov 3, 2026, Nov 10, 2026, Nov 17, 2026, Nov 24, 2026
Service 6
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday
Removed dates: Nov 2, 2026, Nov 9, 2026, Nov 16, 2026, Nov 23, 2026, Nov 30, 2026
Service 7
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Tuesday
Service 8
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Thursday
Removed dates: Nov 5, 2026, Nov 12, 2026, Nov 19, 2026, Nov 26, 2026
Service 9
21
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Wednesday
Removed dates: Nov 4, 2026, Nov 11, 2026, Nov 18, 2026, Nov 25, 2026
Official feed version 6ee8491d-8f94-4122-a67b-ef228d9e0945
Source checksum 91dd8e42516043447b7a3e7185d65557916494aaafeb36792fa1c09c514e2bbb