Compiled by Pete Coulman

July 1, 1954

Service begins on a new suburban TTC service replacing Danforth Bus Line’s TORONTO-STOP 12 service. Buses on CLIFFSIDE run from Luttrell loop at Danforth and Luttrell via east on Danforth Avenue, north on Birchmount, east on Highview, north and east on McIntosh, south on Midland and west on Kingston Road to Danforth. Originally operated by TTC personnel from Woodbine garage (a former Hollinger Bus Lines garage located at the southeast corner of O’Connor and Woodbine)

March 31, 1956

Operations transferred to Birchmount garage.

April 15, 1956

Assigned route number 20. During rush hours, four buses operate a 9 minute headway over the 6.2 mile round trip (36 minutes trip time). At all other times, two buses take 30 minutes and maintain 15 minute headways.

September 11, 1961

In order to avoid a left turn from Danforth Avenue onto Birchmount, and to provide a more convenient transfer for northbound passengers, all eastbound buses are rerouted via Danforth, east on Parkette (just south of Danforth) and north on Birchmount, returning to the old route.

May 11, 1968

In conjunction with the extension of the BLOOR-DANFORTH SUBWAY from Woodbine to Warden, buses are extended west from Luttrell loop to Main Street station. Buses operate from Main Street station via south on Main, east on Danforth, east on Parkette Place, north on Birchmount, east on Highview, north on Kennedy Road, east on Park and north on Midland, looping clockwise via Danforth Road and Wolf to Midland, returning via the reverse route (turning right from Birchmount directly to Danforth instead of Parkette Place).

April 21, 1969

A new branch inaugurated, running from Main Street station via south on Main, east on Danforth, north on Warden and east on St. Clair to Warden station. Buses run every twenty minutes from approximately 9:00 a.m. to 3:00 p.m., Mondays to Fridays only.

June 23, 1969

New rush hour service, operating at 15 minute intervals, and Saturday service, operating at 20 minute intervals, added to the 20A Warden branch.

November 22, 1980

In conjunction with the extension of the BLOOR-DANFORTH SUBWAY from Warden to Kennedy, service on Midland (20) branch extended from its on-street loop to operate to Kennedy station via north on Midland and west on Eglinton Avenue. Service removed from Danforth Road and Wolf. No change to the 20A Warden service.

January 5, 1986

Service on the 20A ‘Warden’ branch discontinued, replaced by the new 135 GERRARD bus.

February 17, 1996

As part of a systemwide reduction of service resulting from the elimination of the provincial subsidy for transit operations, weekday late evening and weekend evening service cancelled. Buses on a new 12A branch of the 12 KINGSTON ROAD bus replaces the cancelled service on Midland Avenue.

November 23, 2008

As part of the TTC’s ridership growth strategy, weekday late evening and weekend evening service restored on the 20 CLIFFSIDE route.

May 8, 2011

As part of a general reallocation of resources, service after 10 p.m. on weekends and holidays eliminated.

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20 Cliffside Image Archive

	On the eve of the extension of the BLOOR-DANFORTH SUBWAY to Warden (May 10, 1968), a TTC Canadian Car bus Route 1905 leaves Luttrell loop and passes an arriving DANFORTH streetcar on Kelvin Avenue. Photo by David Wilson.
	TTC GM New Look Route 3703 turns off of Danforth Avenue into Luttrell loop in this 1966 scene. Photo by Peter Cox, donated by Pete Coulman.
	TTC Flyer D-901 bus Route 6121 boards passengers in Main Street station in this post 1985 picture.
	This picture shows eastbound TTC Orion VII bus 8134, running along Danforth Avenue near Victoria Park Avenue. Photo by Roman Fomin on May 7, 2012.
	A map of 20 CLIFFSIDE operations, effective July 2010.
	An Orders and Notice to TTC drivers on September 11, 1961, detailing the route change at Parkette Place.
	A scan of the front face of a timetable for 20 CLIFFSIDE, effective February 15,1960.
	A scan of the front face of a timetable for 20 CLIFFSIDE, effective September 7, 1965
	A scan of the front face of a timetable for 20 CLIFFSIDE, effective September 4, 1973