Here is my thoughts on a return route from the Dallas MTTS stop, to Denver.
It is a little longer than going 287, but is more Highway, so a possibility for making up time that is lost in the small towns on 287.
https://goo.gl/maps/CfR8u

Let me know your thoughts. This is posted on MA, NAM and will be a drive event on the MINI5280 Drives FB page.

 

Interesting, when I pull up the Google map it's showing a route that's pretty much all US287.

We drove from Dallas to Denver when I lived in TX; 287 to Dumas, then over throught Dalhart, TX to Raton, NM to catch I-25. I haven't checked road construction lately.

 

Try the one I just redid, should not give any other routes.
https://goo.gl/maps/CfR8u