100 Mile House is a district municipality located in the South Cariboo region of central British Columbia, Canada. 100 Mile House was originally known as Bridge Creek House, named after the creek running through the area. Its origins as a settlement go back to the time when Thomas Miller owned a collection of ramshackle buildings serving the traffic of the gold rush as a resting point for travellers moving between Kamloops and Fort Alexandria, which was 158 kilometres north of 100 Mile House farther along the Hudson's Bay Brigade Trail. It acquired its current name during the Cariboo Gold Rush where a roadhouse was constructed in 1862 at the 100 miles mark up the Old Cariboo Road from Lillooet.