How far is Austin, TX from Round Rock, TX?
The driving distance from Austin, TX to Round Rock, TX is about 19 miles (30.5 km), with a travel time of about 00h 23m by car.
- The straight-line flight distance is about 17.1 miles (27.5 km).
- For a round trip, plan for roughly 00h 47m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 23m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Austin and Round Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin and Round Rock.
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1
Start on East 5th Street
1836 ft · 52 sec · East 5th Street
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2
Turn left onto Red River Street
711 ft · 20 sec · Red River Street
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3
Turn right onto East 7th Street
757 ft · 17 sec · East 7th Street
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4
Turn left onto North Interstate 35
928 ft · 27 sec · North Interstate 35
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5
Take the ramp slight left toward I 35 North, US 290 East
906 ft · 22 sec
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6
Merge slight left onto Purple Heart Trail
2985 ft · 42 sec · Purple Heart Trail
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7
Keep slight right to continue on Purple Heart Trail
16.2 mi · 18 min · Purple Heart Trail
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8
Take the exit slight right toward RM 620: Round Rock Avenue
1 km · 60 sec
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9
Turn straight onto North Interstate 35
777 ft · 16 sec · North Interstate 35
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10
Turn right onto Round Rock Avenue
1656 ft · 45 sec · Round Rock Avenue
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11
Enter the roundabout and take exit 1 toward North Blair Street
13 m · 1 sec · North Blair Street
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12
Exit the roundabout onto North Blair Street
58 m · 10 sec · North Blair Street
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13
Turn left onto West Main Street
107 m · 16 sec · West Main Street
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14
Turn right onto South Mays Street
33 m · 3 sec · South Mays Street
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15
Arrive at your destination
0 m · 1 sec · South Mays Street
Car Route Details
A richer read on the saved driving route between Austin and Round Rock.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Purple Heart Trail
Keep slight right to continue on Purple Heart Trail
16.2 mi · 00h 18m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Chance Showers And Thunderstorms leaving Austin and Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms near Round Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Austin to Round Rock?
The road trip is about 19 miles (30.5 km) and usually takes 00h 23m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Wells Branch is a useful midpoint, sitting about 9.5 miles from Austin and 9.4 miles from Round Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 17.1 miles (27.5 km), while the road route adds roughly 1.9 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:42 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.53 one way or $5.06 round trip. Estimated CO2 is about 6 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Austin and Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms near Round Rock.
Stop Ideas Near Wells Branch
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Wells Branch.
Austin
Taylor
San Marcos Station
Killeen, Texas
Flight Path Map
This map shows the direct air route between Austin and Round Rock. Straight-line distance: 17.09 mi (27.51 km).
#1 Austin
The eleventh most populous city in the United States and the center of the Austin metropolitan area.
| Population | 995,484 |
| Coordinates | 30.2671500, -97.7430600 |
| Altitude | 149 |
| Country | United States |
#2 Round Rock
The fourth most populous city in Williamson County, Texas.
| Population | 137,575 |
| Coordinates | 30.5082600, -97.6789000 |
| Altitude | 224 |
| Country | United States |
End: Round Rock (-97.6789, 30.50826)
Estimated Travel Time
Distance: 30 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 37m |
| 40 mph (64.37 km/h) | 00h 28m |
| 50 mph (80.47 km/h) | 00h 22m |
| 60 mph (96.56 km/h) | 00h 18m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $2.53 | $5.06 |
| Mid-grade | $4.25 | $2.85 | $5.70 |
| Premium | $4.59 | $3.08 | $6.15 |
| Diesel | $3.99 | $2.68 | $5.35 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Texas · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.