Guelph and Goderich Railway was a railway in southern Ontario, Canada. It came about from a desire for a connection from Guelph to the harbour at Goderich on Lake Huron. Abandoned by the C.P.R. in 1988. Some portions have been opened as the G2G Rail Trail, a recreational trail for use by walkers, hikers and bikers. A railway post office (RPO) was a railroad car that was normally operated in passenger service as a means to sort mail en route, in order to speed delivery.