How far is Round Rock, TX from Grand Prairie, TX?
The driving distance from Round Rock, TX to Grand Prairie, TX is about 185 miles (297.7 km), with a travel time of about 02h 54m by car.
- The straight-line flight distance is about 159.7 miles (257 km).
- For a round trip, plan for roughly 05h 48m 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 54m.
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 Texas, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Partly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Round Rock and Grand Prairie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Round Rock and Grand Prairie.
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1
Start on South Mays Street
142 m · 19 sec · South Mays Street
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2
Turn left onto West Liberty Avenue
573 ft · 17 sec · West Liberty Avenue
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3
At the end of the road, turn right onto Round Rock Avenue
1498 ft · 37 sec · Round Rock Avenue
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4
Turn right onto North Interstate 35
1544 ft · 24 sec · North Interstate 35
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5
Take the ramp slight left toward I 35 North
1143 ft · 28 sec
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6
Merge slight left onto Purple Heart Trail
78.1 mi · 1 hr 20 min · Purple Heart Trail
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7
Continue on South Jack Kultgen Expressway
6.6 mi · 8 min · South Jack Kultgen Expressway
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8
Continue on Purple Heart Trail
33 mi · 33 min · Purple Heart Trail
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9
Keep slight right to continue on I 35E: Dallas
47.3 mi · 49 min
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10
Take the exit slight right toward I 20 West: Fort Worth
1.5 km · 2 min
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11
Merge slight left onto Lyndon B Johnson Freeway
9 mi · 10 min · Lyndon B Johnson Freeway
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12
Take the exit slight right toward FM 1382
1757 ft · 46 sec
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13
Turn right onto South Belt Line Road
5 mi · 9 min · South Belt Line Road
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14
Turn slight right onto Southeast 9th Street
1484 ft · 50 sec · Southeast 9th Street
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15
Turn left onto East Main Street
1325 ft · 33 sec · East Main Street
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16
Turn right
23 m · 5 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Round Rock and Grand Prairie.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
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.
Mostly Cloudy leaving Round Rock and Partly Sunny then Slight Chance Showers And Thunderstorms near Grand Prairie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Round Rock to Grand Prairie?
The road trip is about 185 miles (297.7 km) and usually takes 02h 54m 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?
Northcrest is a useful midpoint, sitting about 91.1 miles from Round Rock and 93.9 miles from Grand Prairie.
How much longer is the road route than the straight-line distance?
The direct path is about 159.7 miles (257 km), while the road route adds roughly 25.3 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 12:42 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.68 one way or $49.35 round trip. Estimated CO2 is about 58 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Round Rock and Partly Sunny then Slight Chance Showers And Thunderstorms near Grand Prairie.
Stop Ideas Near Northcrest
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 Northcrest.
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Flight Path Map
This map shows the direct air route between Round Rock and Grand Prairie. Straight-line distance: 159.72 mi (257.04 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 Grand Prairie
The ninth most populous city in Texas.
| Population | 195,272 |
| Coordinates | 32.7459600, -96.9977800 |
| Altitude | 157 |
| Country | United States |
End: (-96.997772, 32.74596)
Estimated Travel Time
Distance: 298 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 09m |
| 40 mph (64.37 km/h) | 04h 37m |
| 50 mph (80.47 km/h) | 03h 41m |
| 60 mph (96.56 km/h) | 03h 04m |
| 70 mph (112.65 km/h) | 02h 38m |
| 80 mph (129 km/h) | 02h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $24.68 | $49.35 |
| Mid-grade | $4.25 | $27.77 | $55.53 |
| Premium | $4.59 | $29.98 | $59.96 |
| Diesel | $3.99 | $26.07 | $52.15 |
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 · May 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.