He left in March 1825, and crossed the snow-covered Athabasca Pass. From Fort Assiniboine he went on horseback south to Fort Edmonton on the North Saskatchewan River. He had ordered this new road laid out on his outward voyage. It was a major saving over the old Methye Portage route. He went on horseback from Fort Carlton to the Red River settlements, and then by boat to York Factory. During this trip his servant, Tom Taylor, became separated on a hunting trip. After searching for half a day, Simpson left Taylor to his fate. Taylor reached the Swan River post after 14 days in the wilderness with no proper equipment.