Distance from Austin, TX to Round Rock, TX
Driving directions and distance from Austin, TX to Round Rock, TX. See miles, drive time, and estimated gas cost for the trip.
Trip cost calculator
Trip details
| From | Austin, Texas (population: 885,400) |
|---|---|
| To | Round Rock, Texas (population: 109,821) |
| Driving distance | 21 miles |
| Straight-line (as the crow flies) | 17 miles |
| Estimated drive time | 21 min (avg 60 mph) |
| Gas needed at 25 MPG | ~ 0.8 gallons |
| Gas needed at 30 MPG | ~ 0.7 gallons |
| Austin coordinates | 30.2672°, -97.7431° |
| Round Rock coordinates | 30.5083°, -97.6789° |
Frequently asked questions
How many miles is it from Austin, TX to Round Rock, TX?
The driving distance from Austin, TX to Round Rock, TX is approximately 21 miles by road. As the crow flies (straight line), the two cities are 17 miles apart.
How long is the drive from Austin, TX to Round Rock, TX?
The drive takes about 21 min at an average speed of 60 mph. Actual time will depend on traffic, weather, your driving speed, and how often you stop. Plan for additional time on routes with construction, urban congestion, or scenic detours.
How much will gas cost?
For a vehicle averaging 25 MPG, expect to use about 0.8 gallons — roughly $3 at $3.40/gallon. A more efficient vehicle (30 MPG) would use about 0.7 gallons, or $2. Use the calculator above to plug in your own MPG and local gas price.
What's the best route?
The figures above show the most direct driving route. For real-time turn-by-turn directions, current traffic conditions, and to compare alternative routes (interstate vs. scenic), use Google Maps or your preferred GPS app. Toll roads may shave time but add cost — check ahead for E-ZPass / SunPass / FasTrak coverage.