The Speed River is a river located in southern Ontario, Canada. It flows through the city of Guelph and is a tributary of the Grand River. The river is approximately 30 kilometers long and is known for its scenic beauty and recreational opportunities, including fishing and kayaking. The Speed River originates from the Guelph Lake and meanders through various landscapes, including forests and urban areas. It plays an important role in the local ecosystem and provides habitat for various wildlife species. The river is also significant for its historical and cultural connections to the surrounding communities.