Bus 20 in Ottawa links St-laurent D and Rideau A. The route is 13.1 km long with 52 stops, and the official schedule from OC Transpo puts the full trip at about 49 minutes. On a weekday it runs 34 trips in one direction, and 22 on a weekend day.
Route at a glance
| Mode | Bus |
|---|---|
| Route number | 20 |
| City | Ottawa |
| Transit authority | OC Transpo |
| Start → end | St-laurent D → Rideau A |
| End → start | Rideau A → St-laurent D |
| Route length | 13.1 km / 12.9 km in the opposite direction |
| Number of stops | 52 / 58 in the opposite direction |
| Travel time | about 49 minutes |
| Trips per day | 34 on weekdays, 22 on weekends one way |
| Frequency | peak 30 · midday 29–60 · weekend 30–60 |
| First / last trip from «St-laurent D» | 05:20 / 23:50 |
| First / last trip from «Rideau A» | 05:10 / 23:10 |
| Fare | — |
| Updated | August 23, 2026 |
Route of Bus 20
Outbound: St-laurent D → Rideau A
This direction has 52 stops and runs 13.1 km. The route passes St-laurent / Ogilvie, Cummings / Clarke, Montréal / Notre-dame Cemetery, Des Pères-blancs / Lebrun. Below is the full list with the distance from the first stop.
| No. | Stop | From start | Note |
|---|---|---|---|
| 1 | St-laurent D | 0.0 km | Terminus |
| 2 | St-laurent / Ogilvie | 0.8 km | |
| 3 | St-laurent / Cyrville | 1.1 km | |
| 4 | St-laurent / Ad. 1055 | 1.3 km | |
| 5 | Donald / St-laurent | 1.6 km | |
| 6 | Donald / Findon | 1.8 km | |
| 7 | Donald / Cummings | 2.0 km | |
| 8 | Cummings / Donald | 2.2 km | |
| 9 | Cummings / Snow | 2.4 km | |
| 10 | Cummings / Shane | 2.6 km | |
| 11 | Cummings / Gardenvale | 2.8 km | |
| 12 | Cummings / Burn | 3.0 km | |
| 13 | Cummings / Québec | 3.2 km | |
| 14 | Cummings / Clarke | 3.4 km | |
| 15 | Cummings / Wilson | 3.6 km | |
| 16 | Cummings / Montréal | 3.8 km | |
| 17 | Montréal / Montfort Hospital | 4.1 km | |
| 18 | Montfort Hospital | 4.4 km | |
| 19 | Brittany / Montréal | 5.1 km | |
| 20 | Brittany / Kristin | 5.2 km | |
| 21 | Brittany / Truro | 5.5 km | |
| 22 | Brittany / Bangs | 5.6 km | |
| 23 | St-laurent / Dunbarton | 5.9 km | |
| 24 | St-laurent / Ad. 505 | 6.1 km | |
| 25 | St-laurent / Montréal | 6.5 km | |
| 26 | Montréal / Notre-dame Cemetery | 6.7 km | |
| 27 | Montréal / De L’église | 6.9 km | |
| 28 | Alfred / Montréal | 7.2 km | |
| 29 | Montfort / Alfred | 7.3 km | |
| 30 | Montfort / Ste Anne | 7.6 km | |
| 31 | Montfort / Park | 7.8 km | |
| 32 | Montfort / Marier | 7.9 km | |
| 33 | Marier / Longpre | 8.1 km | |
| 34 | Des Pères-blancs / Marier | 8.3 km | |
| 35 | Des Pères-blancs / Longpré | 8.4 km | |
| 36 | Des Pères-blancs / Lebrun | 8.6 km | |
| 37 | 300 Des Pères Blancs | 8.8 km | |
| 38 | Des Pères-blancs / Lebrun | 9.2 km | |
| 39 | Des Pères-blancs / Marquette | 9.4 km | |
| 40 | Des Pères-blancs / Marier | 9.5 km | |
| 41 | Marier / Genest | 9.8 km | |
| 42 | Marier / Barrette | 10.0 km | |
| 43 | Beechwood / St Charles | 10.3 km | |
| 44 | Beechwood / Mackay | 10.6 km | |
| 45 | Old St Patrick / Cobourg | 11.3 km | |
| 46 | Old St Patrick / Beausoleil | 11.6 km | |
| 47 | St Patrick / Beausoleil | 11.8 km | |
| 48 | St Patrick / Cumberland | 12.3 km | |
| 49 | Dalhousie / St Patrick | 12.5 km | |
| 50 | Dalhousie / York | 12.7 km | |
| 51 | Rideau D | 12.9 km | |
| 52 | Rideau A | 13.1 km | Terminus |
Inbound: Rideau A → St-laurent D
This direction has 58 stops and runs 12.9 km. The route passes Dalhousie / Rideau, Des Pères-blancs / Longpré, Montréal / Notre-dame Cemetery, Cummings / Clarke. Below is the full list with the distance from the first stop.
| No. | Stop | From start | Note |
|---|---|---|---|
| 1 | Rideau B | 0.0 km | Terminus |
| 2 | Dalhousie / Rideau | 0.3 km | |
| 3 | Dalhousie / Clarence | 0.6 km | |
| 4 | Murray / Dalhousie | 0.7 km | |
| 5 | Murray / Cumberland | 0.9 km | |
| 6 | Murray / King Edward | 1.1 km | |
| 7 | Beausoleil / St Patrick | 1.4 km | |
| 8 | Old St Patrick / De La Salle H.s. | 1.6 km | |
| 9 | Old St Patrick / Cobourg | 1.9 km | |
| 10 | St Patrick / Cobourg | 2.0 km | |
| 11 | Beechwood / Loyer | 2.6 km | |
| 12 | Beechwood / St Charles | 2.9 km | |
| 13 | Marier / Beechwood | 3.1 km | |
| 14 | Marier / Genest | 3.3 km | |
| 15 | Des Pères-blancs / Marier | 3.6 km | |
| 16 | Des Pères-blancs / Longpré | 3.7 km | |
| 17 | Des Pères-blancs / Lebrun | 4.0 km | |
| 18 | 300 Des Pères Blancs | 4.2 km | |
| 19 | Des Pères-blancs / Lebrun | 4.5 km | |
| 20 | Des Pères-blancs / Marquette | 4.8 km | |
| 21 | Des Pères-blancs / Marier | 4.9 km | |
| 22 | Marier / Longpre | 5.0 km | |
| 23 | Marier / Montfort | 5.1 km | |
| 24 | Montfort / Bradley | 5.3 km | |
| 25 | Montfort / Ste Anne | 5.5 km | |
| 26 | Montfort / Granville | 5.7 km | |
| 27 | Granville / Montréal | 5.8 km | |
| 28 | Montréal / Lafontaine | 5.9 km | |
| 29 | Montréal / De L’église | 6.3 km | |
| 30 | Montréal / Notre-dame Cemetery | 6.4 km | |
| 31 | St-laurent / Montréal | 6.7 km | |
| 32 | St-laurent / Ad. 505 | 7.1 km | |
| 33 | St-laurent / Brittany | 7.2 km | |
| 34 | Brittany / Coleford | 7.4 km | |
| 35 | Brittany / Bangs | 7.5 km | |
| 36 | Brittany / Quarry | 7.8 km | |
| 37 | Brittany / Kristin | 8.0 km | |
| 38 | Brittany / Montréal | 8.1 km | |
| 39 | Montréal / Cummings | 8.2 km | |
| 40 | Montréal / Montfort Hospital | 8.5 km | |
| 41 | Montfort Hospital | 8.8 km | |
| 42 | Cummings / Montréal | 9.4 km | |
| 43 | Cummings / Wilson | 9.6 km | |
| 44 | Cummings / Clarke | 9.8 km | |
| 45 | Cummings / Québec | 10.1 km | |
| 46 | Cummings / Burn | 10.2 km | |
| 47 | Cummings / Gardenvale | 10.4 km | |
| 48 | Cummings / Shane | 10.7 km | |
| 49 | Cummings / Caron | 10.8 km | |
| 50 | Cummings / Donald | 11.0 km | |
| 51 | Donald / Cummings | 11.2 km | |
| 52 | Donald / Hendon | 11.4 km | |
| 53 | Donald / St-laurent | 11.6 km | |
| 54 | St-laurent / Donald | 11.8 km | |
| 55 | St-laurent / Queen Mary | 12.0 km | |
| 56 | St-laurent / Coventry | 12.2 km | |
| 57 | St-laurent / Lemieux | 12.6 km | |
| 58 | St-laurent C | 12.9 km | Terminus |
Schedule and frequency
According to the official schedule from OC Transpo, the route runs 34 trips in one direction on a weekday, and 22 on a weekend day.
| Direction | Weekdays | Weekends and holidays |
|---|---|---|
| From «St-laurent D» | 05:20 — 23:50 | 09:16 — 22:46 |
| From «Rideau A» | 05:10 — 23:10 | 08:40 — 23:09 |
Frequency calculated from the departure table: in the morning peak buses run every 30 minutes; midday every 29–60 minutes; in the afternoon peak every 30; on weekends every 30–60 minutes.
Frequently asked questions
When do the first and last trips run?
From St-laurent D the first is at 05:20 and the last at 23:50. From Rideau A they are 05:10 and 23:10.
How long does the trip from St-laurent D to Rideau A take?
About 49 minutes end to end — the median of full trips in the official schedule.
How many stops does the route have?
52 outbound and 58 inbound according to the official GTFS feed. The two lists do not match exactly.
Does bus 20 run on weekends?
Yes. On weekends and holidays there are 22 trips in one direction, running from St-laurent D between 09:16 and 22:46.
Every route number with its termini, operating hours and travel time is collected in the Ottawa buses overview.
Data current as of August 23, 2026. Schedule and termini — OC Transpo. Fares — OC Transpo. Stop list, schedule and route geometry come from the official GTFS feed (OC Transpo, version S1000512-S1000514).