How far is Katy, TX from Grand Prairie, TX?
The driving distance from Katy, TX to Grand Prairie, TX is about 264.8 miles (426.1 km), with a travel time of about 04h 16m by car.
- The straight-line flight distance is about 215.9 miles (347.5 km).
- For a round trip, plan for roughly 08h 33m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 04h 16m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Leon County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Katy and Grand Prairie.
Turn-by-Turn Driving Directions
Step-by-step road directions between Katy and Grand Prairie.
-
1
Start on Highway Boulevard
1.1 mi · 2 min · Highway Boulevard
-
2
Turn left onto Katy Freeway Frontage Road
69 m · 4 sec · Katy Freeway Frontage Road
-
3
Take the ramp slight left toward I 10 East
1776 ft · 44 sec
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4
Merge slight left onto Katy Freeway
1.3 km · 52 sec · Katy Freeway
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5
Take the exit slight right toward TX 99 Toll North, TX 99 South: Grand Parkway
2346 ft · 45 sec
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6
Keep slight left to continue on TX 99 Toll North: Grand Parkway
1 km · 1 min
-
7
Keep slight left to continue on TX 99 Toll North
854 ft · 21 sec
-
8
Merge slight left onto West Grand Parkway North
37.8 mi · 41 min · West Grand Parkway North
-
9
Take the exit slight right toward I 45 North: Dallas
1.4 mi · 3 min
-
10
Merge slight left
212.4 mi · 3 hr 39 min
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11
Take the exit slight right toward I 30
978 ft · 24 sec
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12
Keep slight left to continue on I 30 West
2818 ft · 1 min
-
13
Keep slight left
1037 ft · 25 sec
-
14
Merge slight left onto East R L Thornton Freeway
1.2 km · 1 min · East R L Thornton Freeway
-
15
Continue on Tom Landry Freeway
10.7 mi · 12 min · Tom Landry Freeway
-
16
Take the exit slight right toward Belt Line Road
1342 ft · 23 sec
-
17
Turn straight onto East Interstate 30
2496 ft · 50 sec · East Interstate 30
-
18
Turn left onto North Belt Line Road
1.2 km · 2 min · North Belt Line Road
-
19
Continue on North Belt Line Road
532 ft · 13 sec · North Belt Line Road
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20
Turn right onto Davis Street
1068 ft · 26 sec · Davis Street
-
21
Turn slight right onto East Main Street
5 m · 3 sec · East Main Street
-
22
Turn right
23 m · 5 sec
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23
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Katy and Grand Prairie.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 45 North
Merge slight left
212 mi · 03h 39m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Cloudy leaving Katy and Mostly Cloudy near Grand Prairie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Katy to Grand Prairie?
The road trip is about 264.8 miles (426.1 km) and usually takes 04h 16m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Leona is a useful midpoint, sitting about 134.8 miles from Katy and 129.9 miles from Grand Prairie.
How much longer is the road route than the straight-line distance?
The direct path is about 215.9 miles (347.5 km), while the road route adds roughly 48.9 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 8:26 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.30 one way or $70.59 round trip. Estimated CO2 is about 83 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Katy and Mostly Cloudy near Grand Prairie.
Stop Ideas Near Leona
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 Leona.
Bryan, TX
Waco, TX
Flight Path Map
This map shows the direct air route between Katy and Grand Prairie. Straight-line distance: 215.95 mi (347.53 km).
#1 Katy
City in Texas, United States; within the Houston–The Woodlands–Sugar Land metropolitan area
| Population | 23,889 |
| Coordinates | 29.7857900, -95.8244000 |
| Altitude | 42 |
| 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: 426 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 49m |
| 40 mph (64.37 km/h) | 06h 37m |
| 50 mph (80.47 km/h) | 05h 17m |
| 60 mph (96.56 km/h) | 04h 24m |
| 70 mph (112.65 km/h) | 03h 46m |
| 80 mph (129 km/h) | 03h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $35.30 | $70.59 |
| Mid-grade | $4.25 | $39.71 | $79.43 |
| Premium | $4.59 | $42.88 | $85.76 |
| Diesel | $3.99 | $37.29 | $74.59 |
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 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.