High Quality Content by WIKIPEDIA articles! GO Transit is an inter-regional public transit system in Southern Ontario, Canada. It primarily serves the Greater Toronto and Hamilton Area (GTHA) conurbation, with operations extending to several communities beyond the GTHA proper in the Greater Golden Horseshoe. GO carries over 57 million passengers a year using an extensive network consisting of diesel train and coach bus service, enhanced by convenient connections with other regional transit providers such as the Toronto Transit Commission (TTC) and Via Rail.