The iXpress express bus service is operated by GRT consisting of four routes along main corridors in Kitchener–Waterloo and Cambridge.
The first route, designated route 200 after the expansion of iXpress service, was launched in September 2005 and runs from Conestoga Mall in Waterloo and Ainslie St. Transit Terminal in Cambridge primarily along King Street in Kitchener and Waterloo and Hespeler Road in Cambridge, utilizing a short section of Highway 401.
 The second route, route 201, runs from Forest Glen Terminal in Kitchener to Conestoga Mall in Waterloo, primarily along Fischer-Hallman Road in both cities.
The third, route 202, runs in a crosstown fashion through Waterloo, primarily along University Avenue, between the Boardwalk shopping centre and Conestoga Mall.
The fourth iXpress route, route 203, opened on April 28, 2014.
It runs from Cambridge Centre to Sportsworld Terminal.
An extension of the 203 to Conestoga College is made during the AM and PM peak periods when classes are in session.
The fifth iXpress route, route 204, began service in September 2015.
The 204 iXpress runs from Ottawa and Lackner to the Boardwalk via Victoria Street, Highland Road, Ira Needles Boulevard and Downtown Kitchener.
Route 204 operates every 15 minutes during the week and every 30 minutes during the evening and weekends.

On April 2017 it was announced that the ION and iXpress services would be closely integrated into a single system.
In March 2018, nine new Ion buses were unveiled; initially they were used on local routes in Cambridge.
They now operate on route 302 (renumbered from 200), branded as Ion Bus, from Fairway Station in Kitchener to the Ainslie Street terminal in Cambridge.
These vehicles offer new features, such as more comfortable, high-back seats, free Wi-Fi and USB charging ports.
The iXpress express bus service is operated by GRT consisting of four routes along main corridors in Kitchener–Waterloo and Cambridge. The first route, designated route 200 after the expansion of iXpress service, was launched in September 2005 and runs from Conestoga Mall in Waterloo and Ainslie St. Transit Terminal in Cambridge primarily along King Street in Kitchener and Waterloo and Hespeler Road in Cambridge, utilizing a short section of Highway 401.  The second route, route 201, runs from Forest Glen Terminal in Kitchener to Conestoga Mall in Waterloo, primarily along Fischer-Hallman Road in both cities. The third, route 202, runs in a crosstown fashion through Waterloo, primarily along University Avenue, between the Boardwalk shopping centre and Conestoga Mall. The fourth iXpress route, route 203, opened on April 28, 2014. It runs from Cambridge Centre to Sportsworld Terminal. An extension of the 203 to Conestoga College is made during the AM and PM peak periods when classes are in session. The fifth iXpress route, route 204, began service in September 2015. The 204 iXpress runs from Ottawa and Lackner to the Boardwalk via Victoria Street, Highland Road, Ira Needles Boulevard and Downtown Kitchener. Route 204 operates every 15 minutes during the week and every 30 minutes during the evening and weekends.
On April 2017 it was announced that the ION and iXpress services would be closely integrated into a single system. In March 2018, nine new Ion buses were unveiled; initially they were used on local routes in Cambridge. They now operate on route 302 (renumbered from 200), branded as Ion Bus, from Fairway Station in Kitchener to the Ainslie Street terminal in Cambridge. These vehicles offer new features, such as more comfortable, high-back seats, free Wi-Fi and USB charging ports.
Grand River Transit/draft