How far is Grand Prairie, TX from Harlingen, TX?
The driving distance from Grand Prairie, TX to Harlingen, TX is about 504.5 miles (811.9 km), with a travel time of about 09h 14m by car.
- The straight-line flight distance is about 454.8 miles (732 km).
- For a round trip, plan for roughly 18h 28m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 09h 14m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Guadalupe County, Texas, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Grand Prairie and Harlingen.
Turn-by-Turn Driving Directions
Step-by-step road directions between Grand Prairie and Harlingen.
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1
Start on the route
67 m · 22 sec
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2
Turn left onto Northeast 5th Street
58 m · 14 sec · Northeast 5th Street
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3
Turn left onto East Main Street
1069 ft · 27 sec · East Main Street
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4
Turn right onto South Belt Line Road
5.4 mi · 10 min · South Belt Line Road
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5
Take the ramp left toward I 20 East
1720 ft · 42 sec
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6
Merge slight left onto Lyndon B Johnson Freeway
9.3 mi · 10 min · Lyndon B Johnson Freeway
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7
Take the exit slight right toward I 35E South: Waco
2016 ft · 45 sec
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8
Merge slight left onto South R L Thornton Freeway
80.5 mi · 1 hr 22 min · South R L Thornton Freeway
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9
Continue on North Jack Kultgen Expressway
6.6 mi · 8 min · North Jack Kultgen Expressway
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10
Continue on Purple Heart Trail
37.9 mi · 39 min · Purple Heart Trail
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11
Keep slight left
26.5 mi · 27 min
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12
Take the exit slight right toward TX 130 Toll South: San Antonio
1.1 km · 56 sec
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13
Continue straight
58.5 mi · 55 min
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14
Take the exit slight right toward US 183 South: Lockhart
1219 ft · 30 sec
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15
Continue on United States Highway 183
2699 ft · 35 sec · United States Highway 183
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16
Continue on North Colorado Street
4.9 mi · 9 min · North Colorado Street
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17
Continue on US 183
10.1 mi · 12 min · US 183
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18
Continue on North Magnolia Avenue
4.2 mi · 7 min · North Magnolia Avenue
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19
Continue straight
51.2 mi · 57 min
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20
Turn slight left onto Farm-to-Market Road 792
8.4 mi · 11 min · Farm-to-Market Road 792
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21
Continue on East Main Street
1.3 km · 1 min · East Main Street
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22
Turn left onto South Sunset Strip Drive
1.2 mi · 1 min · South Sunset Strip Drive
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23
Continue on South US Highway 181
40.2 mi · 46 min · South US Highway 181
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24
Continue on North 8th Street
1.3 km · 56 sec · North 8th Street
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25
Continue on US Highway 181 South
16.1 mi · 18 min · US Highway 181 South
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26
Take the exit slight right
1648 ft · 45 sec
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27
Keep slight right to continue on US Route 181
65 m · 6 sec · US Route 181
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28
Turn straight onto US Highway 181
1.1 km · 1 min · US Highway 181
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29
Take the ramp right
1926 ft · 47 sec
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30
Merge slight left
11.9 mi · 14 min
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31
Take the exit straight toward I 37, US 77, I 69E
538 ft · 13 sec
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32
Keep slight left
1965 ft · 48 sec
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33
Merge slight right
2.5 mi · 2 min
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34
Take the exit slight right toward I 69E, US 77: Kingsville, Brownsville
31.3 mi · 34 min
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35
Keep slight left to continue on U.S. Highway 77
61.3 mi · 1 hr 9 min · U.S. Highway 77
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36
Keep slight left to continue on U.S. Highway 77
26.9 mi · 28 min · U.S. Highway 77
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37
Take the exit slight right toward US 77 Business, Loop 499: Valley International Airport, Primera Road
1443 ft · 31 sec
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38
At the end of the road, turn left onto Business 77
2200 ft · 45 sec · Business 77
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39
Turn slight right onto North 77 Sunshine Strip
1.3 km · 1 min · North 77 Sunshine Strip
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40
Turn slight right onto North Commerce Street
2.1 mi · 4 min · North Commerce Street
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41
Arrive at your destination
0 m · 1 sec · South Commerce Street
Car Route Details
A richer read on the saved driving route between Grand Prairie and Harlingen.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
South R L Thornton Freeway
Merge slight left onto South R L Thornton Freeway
80.5 mi · 01h 22m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Mostly Cloudy leaving Grand Prairie and Mostly Sunny near Harlingen.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Grand Prairie to Harlingen?
The road trip is about 504.5 miles (811.9 km) and usually takes 09h 14m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Luling is a useful midpoint, sitting about 252.8 miles from Grand Prairie and 251.7 miles from Harlingen.
How much longer is the road route than the straight-line distance?
The direct path is about 454.8 miles (732 km), while the road route adds roughly 49.7 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 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $67.27 one way or $134.53 round trip. Estimated CO2 is about 158.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Grand Prairie and Mostly Sunny near Harlingen.
Stop Ideas Near Luling
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 Luling.
San Marcos Station
Austin
San Antonio Station
Taylor
Flight Path Map
This map shows the direct air route between Grand Prairie and Harlingen. Straight-line distance: 454.87 mi (732.04 km).
#1 Grand Prairie
The ninth most populous city in Texas.
| Population | 195,272 |
| Coordinates | 32.7459600, -96.9977800 |
| Altitude | 157 |
| Country | United States |
#2 Harlingen
The most populous city in Cameron County, Texas.
| Population | 65,176 |
| Coordinates | 26.1906300, -97.6961000 |
| Altitude | 12 |
| Country | United States |
End: Harlingen (-97.6961, 26.19063)
Estimated Travel Time
Distance: 812 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 16h 48m |
| 40 mph (64.37 km/h) | 12h 36m |
| 50 mph (80.47 km/h) | 10h 05m |
| 60 mph (96.56 km/h) | 08h 24m |
| 70 mph (112.65 km/h) | 07h 12m |
| 80 mph (129 km/h) | 06h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $67.27 | $134.53 |
| Mid-grade | $4.25 | $75.69 | $151.37 |
| Premium | $4.59 | $81.72 | $163.44 |
| Diesel | $3.99 | $71.08 | $142.15 |
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 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.