How far is Round Rock, TX from Dallas, TX?
The driving distance from Round Rock, TX to Dallas, TX is about 177.8 miles (286.2 km), with a travel time of about 02h 37m by car.
- The straight-line flight distance is about 165.3 miles (266.1 km).
- For a round trip, plan for roughly 05h 14m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 37m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
City in McLennan County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Round Rock and Dallas.
Turn-by-Turn Driving Directions
Step-by-step road directions between Round Rock and Dallas.
-
1
Start on South Mays Street
142 m · 19 sec · South Mays Street
-
2
Turn left onto West Liberty Avenue
573 ft · 17 sec · West Liberty Avenue
-
3
At the end of the road, turn right onto Round Rock Avenue
1498 ft · 37 sec · Round Rock Avenue
-
4
Turn right onto North Interstate 35
1544 ft · 24 sec · North Interstate 35
-
5
Take the ramp slight left toward I 35 North
1143 ft · 28 sec
-
6
Merge slight left onto Purple Heart Trail
78.1 mi · 1 hr 20 min · Purple Heart Trail
-
7
Continue on South Jack Kultgen Expressway
6.6 mi · 8 min · South Jack Kultgen Expressway
-
8
Continue on Purple Heart Trail
33 mi · 33 min · Purple Heart Trail
-
9
Keep slight right to continue on I 35E: Dallas
58.1 mi · 1 hr 1 min
-
10
Take the exit slight right toward Continental Avenue
1188 ft · 31 sec
-
11
Turn right onto Continental Avenue
1275 ft · 31 sec · Continental Avenue
-
12
Turn slight right onto North Lamar Street
132 m · 11 sec · North Lamar Street
-
13
Arrive at your destination
0 m · 1 sec · North Lamar Street
Car Route Details
A richer read on the saved driving route between Round Rock and Dallas.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Purple Heart Trail
Merge slight left onto Purple Heart Trail
78.1 mi · 01h 20m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms leaving Round Rock and Chance Showers And Thunderstorms near Dallas.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Round Rock to Dallas?
The road trip is about 177.8 miles (286.2 km) and usually takes 02h 37m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Lacy-Lakeview is a useful midpoint, sitting about 88.9 miles from Round Rock and 89 miles from Dallas.
How much longer is the road route than the straight-line distance?
The direct path is about 165.3 miles (266.1 km), while the road route adds roughly 12.5 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 1:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.73 one way or $47.46 round trip. Estimated CO2 is about 55.8 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms around Round Rock and Chance Showers And Thunderstorms near Dallas.
Stop Ideas Near Lacy-Lakeview
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Riesel City Hall
Waco City Hall
Robinson City Police Department
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lacy-Lakeview.
Waco, TX
McGregor
Temple
Killeen, Texas
Flight Path Map
This map shows the direct air route between Round Rock and Dallas. Straight-line distance: 165.33 mi (266.08 km).
#1 Round Rock
The fourth most populous city in Williamson County, Texas.
| Population | 137,575 |
| Coordinates | 30.5082600, -97.6789000 |
| Altitude | 224 |
| Country | United States |
#2 Dallas
The ninth most populous city in the United States and the center of the Dallas-Fort Worth metropolitan area.
| Population | 1,343,266 |
| Coordinates | 32.7830600, -96.8066700 |
| Altitude | 128 |
| Country | United States |
End: North Lamar Street (-96.806574, 32.783135)
Estimated Travel Time
Distance: 286 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 55m |
| 40 mph (64.37 km/h) | 04h 26m |
| 50 mph (80.47 km/h) | 03h 33m |
| 60 mph (96.56 km/h) | 02h 57m |
| 70 mph (112.65 km/h) | 02h 32m |
| 80 mph (129 km/h) | 02h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $23.73 | $47.46 |
| Mid-grade | $4.25 | $26.70 | $53.41 |
| Premium | $4.59 | $28.83 | $57.66 |
| Diesel | $3.99 | $25.08 | $50.15 |
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 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.