Kitchi Zibi Mikan is 4 lanes wide, but often only 2 are closed (one direction) for bike days, and it is currently under construction for the LRT (and may still be), so might only be 2 lanes total
Col By, Queen Elizabeth and George Etienne Parkways are all 2 lane roads (1 in each direction)
Etienne has a paved shoulder so is fairly wide.
Queen Elizabeth varies in width but is usually quite wide. Col By is more narrow but should be wide enough to support passing. Its often used for local tri and hasn't felt congested when I've done that race. But for the IM both of these routes should be fine since we're only going one direction.
The only catch is if they also include the run on parts of it, rather than using the parallel MUP for the run on Col. By / Queen Elizabeth, but there's no reason why they wouldn't use the MUP.
Col By, Queen Elizabeth and George Etienne Parkways are all 2 lane roads (1 in each direction)
Etienne has a paved shoulder so is fairly wide.
Queen Elizabeth varies in width but is usually quite wide. Col By is more narrow but should be wide enough to support passing. Its often used for local tri and hasn't felt congested when I've done that race. But for the IM both of these routes should be fine since we're only going one direction.
The only catch is if they also include the run on parts of it, rather than using the parallel MUP for the run on Col. By / Queen Elizabeth, but there's no reason why they wouldn't use the MUP.