1) Take I-8 EAST to I-10 EAST to TUCSON at EXIT 178A near Casa Grande, AZ. This is where I-8 ENDS.
2) Take I-10 EAST through Arizona and New Mexico to I-410 at EXIT 564 in northwest San Antonio, TX. You want I-410 EAST.
3) Stay on I-410 EAST and then SOUTH to I-37 and US-281 NORTH to SAN ANTONIO and CORPUS CHRISTI. You want I-37 SOUTH to CORPUS CHRISTI.
4) Take I-37 SOUTH to US-281 SOUTH to THREE RIVERS and ALICE at EXIT 72.
5) When you exit, continue straight on US-281 SOUTH. Stay on US-281 SOUTH to McAllen.
2) Take I-10 EAST through Arizona and New Mexico to I-410 at EXIT 564 in northwest San Antonio, TX. You want I-410 EAST.
3) Stay on I-410 EAST and then SOUTH to I-37 and US-281 NORTH to SAN ANTONIO and CORPUS CHRISTI. You want I-37 SOUTH to CORPUS CHRISTI.
4) Take I-37 SOUTH to US-281 SOUTH to THREE RIVERS and ALICE at EXIT 72.
5) When you exit, continue straight on US-281 SOUTH. Stay on US-281 SOUTH to McAllen.