How far is Austin, TX from Harlingen, TX?
The driving distance from Austin, TX to Harlingen, TX is about 324.5 miles (522.3 km), with a travel time of about 05h 49m by car.
- The straight-line flight distance is about 281.7 miles (453.3 km).
- For a round trip, plan for roughly 11h 39m 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 05h 49m.
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 Texas, United States
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 Austin and Harlingen.
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin and Harlingen.
-
1
Start on East 5th Street
2551 ft · 1 min · East 5th Street
-
2
At the end of the road, turn right onto North Interstate 35
1893 ft · 40 sec · North Interstate 35
-
3
Take the ramp slight left toward I 35 South
899 ft · 22 sec
-
4
Merge slight left onto Purple Heart Trail
46.4 mi · 50 min · Purple Heart Trail
-
5
Continue on Interstate Highway 35
1.7 mi · 2 min · Interstate Highway 35
-
6
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
-
7
Continue on North Pan Am Expressway
10 mi · 12 min · North Pan Am Expressway
-
8
Keep slight right to continue on Connally Loop
11 mi · 12 min · Connally Loop
-
9
Take the exit slight right toward I 37, US 281 North: San Antonio, Corpus Christi
1184 ft · 29 sec
-
10
Keep slight left to continue on I 37 South: Corpus Christi
2457 ft · 1 min
-
11
Merge slight left
118.7 mi · 1 hr 59 min
-
12
Take the exit slight right toward I 69E, US 77: Kingsville, Brownsville
31.3 mi · 34 min
-
13
Keep slight left to continue on U.S. Highway 77
61.3 mi · 1 hr 9 min · U.S. Highway 77
-
14
Keep slight left to continue on U.S. Highway 77
26.9 mi · 28 min · U.S. Highway 77
-
15
Take the exit slight right toward US 77 Business, Loop 499: Valley International Airport, Primera Road
1443 ft · 31 sec
-
16
At the end of the road, turn left onto Business 77
2200 ft · 45 sec · Business 77
-
17
Turn slight right onto North 77 Sunshine Strip
1.3 km · 1 min · North 77 Sunshine Strip
-
18
Turn slight right onto North Commerce Street
2.1 mi · 4 min · North Commerce Street
-
19
Arrive at your destination
0 m · 1 sec · South Commerce Street
Car Route Details
A richer read on the saved driving route between Austin and Harlingen.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 37 South
Merge slight left
119 mi · 01h 59m
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 Austin 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 Austin to Harlingen?
The road trip is about 324.5 miles (522.3 km) and usually takes 05h 49m 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?
George West is a useful midpoint, sitting about 162.6 miles from Austin and 161.9 miles from Harlingen.
How much longer is the road route than the straight-line distance?
The direct path is about 281.7 miles (453.3 km), while the road route adds roughly 42.8 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 5:20 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $43.27 one way or $86.54 round trip. Estimated CO2 is about 101.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Austin and Mostly Sunny near Harlingen.
Flight Path Map
This map shows the direct air route between Austin and Harlingen. Straight-line distance: 281.67 mi (453.31 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 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: 522 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 48m |
| 40 mph (64.37 km/h) | 08h 06m |
| 50 mph (80.47 km/h) | 06h 29m |
| 60 mph (96.56 km/h) | 05h 24m |
| 70 mph (112.65 km/h) | 04h 38m |
| 80 mph (129 km/h) | 04h 02m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $43.27 | $86.54 |
| Mid-grade | $4.25 | $48.69 | $97.37 |
| Premium | $4.59 | $52.57 | $105.13 |
| Diesel | $3.99 | $45.72 | $91.44 |
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.