What is the distance between London Ontario and St. Louis MO?

Answer 1

1,100 kilometres (683 miles) taking this route:

1. Take HIGHWAY 402 WEST from London to the U.S.A. via the BLUEWATER BRIDGE (toll), from SARNIA, Ontario, CANADA going into PORT HURON, Michigan, U.S.A.
2. Once you have crossed the bridge and once you have cleared the border, follow I-69 WEST (towards LANSING) (& SOUTH [past Lansing]) down to I-469 SOUTH at EXIT 0 in INDIANAPOLIS, INDIANA.
3. Bypass INDIANAPOLIS via I-469; take I-469 to I-70 WEST to St. Louis at EXIT 9.
4. take I-70 WEST to St. Louis.