What is the fastest driving route from Spokane Washington to Houston Texas?

Answer 1

1. Take I-90 EAST through Washington, Idaho and Montana to I-25 SOUTH to CASPER at EXIT 56B in Wyoming.
2. Take I-25 SOUTH through Wyoming and Colorado, through Cheyenne, WY, Denver, CO, Colorado Springs, CO, Santa Fe, NM and Albuqerque, NM to I-10 EAST to El Paso at where I-25 ENDS in Las Cruces, NM. On this stretch, bypass Denver, CO by taking E-470 (tollway) towards LIMON (EXIT 228 off I-25).
3. Take I-10 EAST to Houston. On this stretch, bypass San Antonio by taking I-410 EAST and SOUTH (EXIT 564 off I-10 onto I-410 and then EXIT 33 off I-410 to get back onto I-10 EAST).