Hey John,
From Blanco wouldn't it be eaiser and faster to go just south of town to 32? It takes you to the intersection we are going to.

http://maps.google.com/maps/empw?url...n&gl=usDriving directions to 9595 Ranch Road 12, San Marcos, TX 78666
25.3 mi – about 51 mins

Blanco, TX

1. Head south on Main St/US-281 toward 3rd St
Continue to follow US-281

2.1 mi
2. Turn left at FM-32
23.2 mi
3. Slight right at FM-12/Ranch Rd 12
Destination will be on the right
72 ft

9595 Ranch Road 12

We will be coming 150 to 3237 and south on 12.