There are over 172 bus routes, not including branches, that span a total length of 6,934.1 kilometres (4,308.6 mi).
Some routes also have an express branch.
Other types of bus routes include express routes termed downtown premium express buses (140–149), overnight Blue Night Network bus service (300–399), community bus routes (400–499), and express routes (900–999).

A route is referred to by its route number and/or name (for example, 189 Stockyards).
Routes are named after the street or area it serves.
All of the TTC's regular routes, except for 99 Arrow Road, 171 Mt. Dennis and 176 Mimico GO, connect to a subway station; 99 Arrow Road and 171 Mt. Dennis serve the areas around their respective bus garages.
Vaughan Metropolitan Centre, Highway 407, and Chester stations do not have any connections to regular daytime TTC bus routes.
There are over 172 bus routes, not including branches, that span a total length of 6,934.1 kilometres (4,308.6 mi). Some routes also have an express branch. Other types of bus routes include express routes termed downtown premium express buses (140–149), overnight Blue Night Network bus service (300–399), community bus routes (400–499), and express routes (900–999).
A route is referred to by its route number and/or name (for example, 189 Stockyards). Routes are named after the street or area it serves. All of the TTC's regular routes, except for 99 Arrow Road, 171 Mt. Dennis and 176 Mimico GO, connect to a subway station; 99 Arrow Road and 171 Mt. Dennis serve the areas around their respective bus garages. Vaughan Metropolitan Centre, Highway 407, and Chester stations do not have any connections to regular daytime TTC bus routes.
Toronto Transit Commission bus system