One alternative is to drop down to Little Rock, Ar, then take I30 to Texarkana,Tx and on to hwy 380 at Greenville, up 287 to wichita falls and on to Amarillo, then I40 again to Tucumcari. This is a simplification, but a map will show the layout. Not bad roads, scenic and not to many towns . Best wishes and may God Bless ya, Al & Dee Weaver