QUOTE(Sloan @ Jul 19 2012, 07:55 PM)
A logical extension IMO, Kevin, would be to connect with El Paso, TX, a city that desires such a link.
This will require a bi-state compact; probably hard to achieve since New Mexico and Texas have conservative governors.
Not only Texas. Regional Rail has been proposed for the Front Range in general, possibly running all the way from Cheyenne, WY, down through Denver, Colorado Springs, Pueblo, and down through Raton Pass into Albuquerque, and then of course southward as you mention. RailRunner, as known now, would sort of be a subset of the larger system. But this would involve also Colorado and Wyoming. But then to me the resulting line becomes so long it seems Amtrak should be running it, not a local entity.
The northern piece of it is detailed here
. The Wikipedia item, always coming with the FWIW warning (for what it's worth!) is here
and it does incorporate New Mexico.