Originally Posted by
_kurt
You're talking about walking through the parking garage to get to the train, right? Not walking all the way to the rental center? If so, that sounds promising, and I think I'll give it a try next time.
Correct. The rental center is nearly a mile away across several highways. I would
not attempt to walk there!
Here's a map of the airport, you can see that the moving walkway takes a circuitous path from AA's concourse D.
http://www.miami-airport.com/pdfdoc/MIA_Mover_Flyer.pdf
And here you can see how cutting through the Dolphin parking lot is more direct.
http://www.miami-airport.com/where_to_park.asp