Originally Posted by Maladaptive

Key kringley, that didn't work, the squad at the bottom hit the finish line and I still had 5 enemies to kill?

Ok, I looked again and I think the problem is: I hadn't even noticed the top-center camp, which is where I think you put most squads.
To get all the neckties, you need 4 squads to start at the top left camp (which is what I was referring to). This means that the one that starts at the bottom or one of the two that starts top left and goes down rather than to the right has to be very fast.
For me, this meant putting 4 squads roughly similar in speed top left, and one about 75-100 faster at bottom left.

You could probably also three-medal with 5 speed balanced teams, 3 at top left, one at bottom, one at top center. I haven't tried this configuration, and it certainly gives up some neckties (although you might not need them).