The distance from Castle Rock to San Antonio is approximately 1,500 kilometers. The most practical way to travel is by flying from Denver International Airport to San Antonio International Airport (SAT). Driving is also possible, taking about 15 hours via I-25 and I-35. San Antonio is rich in history, famous for the Alamo and the beautiful River Walk. It is a very family-friendly destination.
Total Distance: Driving distance 1,550 km, straight-line air distance 1,450 km.
Direct flights are available and offer the most convenient travel.
March to May or October to November for mild weather.