Texas driving distances are measured from the following points:
1. Alibates NM - visitor center;
2. Amarillo - town center;
3. Austin - town center;
4. Big Bend NP - Panther Junction;
5. Caprock Canyons SP - visitor center;
6. Corpus Christi - town center;
7. Dallas - town center;
8. Del Rio - town center;
9. El Paso - town center;
10. Enchanted Rock SNA - visitor center;
11. Guadelupe Mountains NP - visitor center;
12. Houston - town center;
13. Langtry - turn-off on US 90;
14. Lost Maples SNA - visitor center;
15. Lubbock - town center;
16. Padre Island - NPS boundary;
16. Palo Duro Canyon SP - visitor center;
18. Pedernales Falls - visitor center;
19. San Antonio - town center.