Bus
Driving
Round Rock to San Antonio
Updated: 28 May 2026
The trip from Round Rock to San Antonio is a quick journey south through the Texas Hill Country. You can drive via I-35 or take a bus service. The distance is approximately 160 kilometers. San Antonio is a historic city famous for the Alamo, the River Walk, and its rich cultural heritage. Expect heavy traffic on I-35, especially near Austin and San Antonio.
Total Distance: Driving distance 160 km, straight-line air distance 140 km.
Fastest Way
Driving takes about 1.5 hours, depending on traffic.
Cheapest Way
Driving is generally the most cost-effective for groups.
Compare Round Rock to San Antonio Routes
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Direct
|
Direct
|
|
|---|---|---|
| Duration | 2 hours | 1 hour 30 mins |
| Avg Price | $15 - $30 | $15 - $25 (fuel) |
| Operator | Greyhound | Personal Vehicle |
| Route | Bus from Austin to San Antonio. | I-35 South. |
| Tip | Book tickets online for the best rates. | I-35 is the most direct route but can be very busy. |
Travel Tips
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TrafficI-35 traffic can be heavy; use navigation apps to avoid delays.
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ParkingParking in downtown San Antonio can be expensive; look for public lots.
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Public TransitVIA Metropolitan Transit offers bus services in San Antonio.
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WeatherTexas summers are very hot; stay hydrated and wear light clothing.
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BookingBook bus tickets in advance if you prefer not to drive.
Safety Tips
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DrivingStay alert for aggressive drivers on I-35.
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Urban SafetyStick to well-lit areas in downtown San Antonio at night.
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EmergencyKeep a roadside emergency kit in your car.
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Stay ConnectedEnsure your phone is charged for navigation.
People Also Ask
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How far is San Antonio from Round Rock?It is about 160 kilometers away.
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Is there a train to San Antonio?Yes, the Amtrak Texas Eagle runs from Austin to San Antonio.
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What is the best way to travel?Driving is faster, but the bus is more relaxing.
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Is San Antonio safe?San Antonio is generally safe, but standard urban precautions apply.
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What is San Antonio known for?It is known for the Alamo, the River Walk, and its history.
Quick Info
- From Round Rock, Texas, United States
- To San Antonio, Texas, United States
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Modes
Best Time to Travel
Spring and fall for mild weather.
Things to Do in San Antonio
1
The Alamo
Visit this historic mission and fortress, a symbol of Texas independence.
2
San Antonio River Walk
Stroll along this famous network of walkways along the San Antonio River, lined with shops and restaurants.
3
The Pearl District
Explore this revitalized historic brewery complex featuring restaurants, shops, and a farmers market.
4
San Antonio Missions National Historical Park
Tour the four historic Spanish missions that are part of a UNESCO World Heritage site.
Tags
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