Part of the Colorado state line is concurrent with the Kansas state line...
615 miles to the Texas state line.
932 miles
It is 592 miles accordiing to MaqQuest.
You get away as soon as possible. Get into a far away state from the underwater volcano. If your in Texas you go into Colorado and so on.
Texas and New Mexico share a state line. So, to answer your question, there is NO driving time between the two states.
It is 807.94 miles according to MapQuest.
It is 558.23 miles according to MapQuest.
About 3,350 miles in a straight line.
It is 34 miles. That is the width of Cimmaron County in the Oklahoma Panhandle which seperates Texas from Colorado. It was property that was too far North for Texas to qualify as a slave state and be admitted into the Union. Ir was given to the Okahoma Territory to void a legal loop hole and became a kind of "No Man's Land".
It is 1,028.41 miles according to MapQuest.
About 1,000 miles using I-87 S.