How far is Katy, TX from Brownsville, TX?
The driving distance from Katy, TX to Brownsville, TX is about 337.5 miles (543.1 km), with a travel time of about 06h 33m by car.
- The straight-line flight distance is about 287.1 miles (462.1 km).
- For a round trip, plan for roughly 13h 06m 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 06h 33m.
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 Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms then Showers And Thunderstorms
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Katy and Brownsville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Katy and Brownsville.
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1
Start on Highway Boulevard
1153 ft · 23 sec · Highway Boulevard
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2
Turn right onto Pin Oak Road
1.2 mi · 2 min · Pin Oak Road
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3
Turn right onto Katy Flewellen Road
2 mi · 4 min · Katy Flewellen Road
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4
Enter the roundabout and take exit 3 toward Spring Green Boulevard
88 m · 10 sec · Spring Green Boulevard
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5
Exit the roundabout onto Spring Green Boulevard
3.9 mi · 9 min · Spring Green Boulevard
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6
Continue straight
1550 ft · 28 sec
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7
Continue straight
4.2 mi · 6 min
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8
Continue straight
5.1 mi · 8 min
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9
Turn right onto Avenue H
2170 ft · 37 sec · Avenue H
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10
Continue on Avenue H
1.5 mi · 3 min · Avenue H
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11
Continue straight
1.5 mi · 3 min
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12
At the end of the road, turn right onto Southwest Freeway Frontage Road
1 km · 1 min · Southwest Freeway Frontage Road
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13
Continue on Southwest Freeway Frontage Road
2217 ft · 1 min · Southwest Freeway Frontage Road
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14
Continue on US 59 Southbound Frontage Road
1.4 km · 2 min · US 59 Southbound Frontage Road
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15
Take the ramp straight
1027 ft · 25 sec
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16
Merge slight left
9.2 mi · 11 min
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17
Keep slight left
6.6 mi · 8 min
-
18
Take the exit slight right
1.5 mi · 2 min
-
19
Continue on US Highway 59
74.7 mi · 1 hr 22 min · US Highway 59
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20
Keep slight left to continue on Spur 91
1.6 km · 1 min · Spur 91
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21
Merge slight right onto US Highway 77 South
33.2 mi · 38 min · US Highway 77 South
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22
Turn straight onto Alamo Street
37.1 mi · 43 min · Alamo Street
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23
Take the exit straight toward I 37, US 77, I 69E
538 ft · 13 sec
-
24
Keep slight left
1965 ft · 48 sec
-
25
Merge slight right
2.5 mi · 2 min
-
26
Take the exit slight right toward I 69E, US 77: Kingsville, Brownsville
31.3 mi · 34 min
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27
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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28
Keep slight left to continue on U.S. Highway 77
43.7 mi · 47 min · U.S. Highway 77
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29
Continue on North Expressway
2.1 mi · 2 min · North Expressway
-
30
Keep slight left to continue on North Expressway
9 mi · 10 min · North Expressway
-
31
Take the exit slight right toward 12th-14th Street
1730 ft · 42 sec
-
32
Turn straight onto South Expressway
101 m · 9 sec · South Expressway
-
33
Turn right onto East 12th Street
1.2 km · 2 min · East 12th Street
-
34
Turn right onto East Washington Street
9 m · 1 sec · East Washington Street
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35
Arrive at your destination
0 m · 1 sec · East Washington Street
Car Route Details
A richer read on the saved driving route between Katy and Brownsville.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
US Highway 59
Continue on US Highway 59
74.7 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.
Chance Showers And Thunderstorms then Showers And Thunderstorms leaving Katy and Mostly Sunny near Brownsville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Katy to Brownsville?
The road trip is about 337.5 miles (543.1 km) and usually takes 06h 33m 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?
Sinton is a useful midpoint, sitting about 169 miles from Katy and 168.5 miles from Brownsville.
How much longer is the road route than the straight-line distance?
The direct path is about 287.1 miles (462.1 km), while the road route adds roughly 50.4 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 $45.01 one way or $90.02 round trip. Estimated CO2 is about 105.8 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms then Showers And Thunderstorms around Katy and Mostly Sunny near Brownsville.
Flight Path Map
This map shows the direct air route between Katy and Brownsville. Straight-line distance: 287.15 mi (462.13 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 Brownsville
The southernmost city in Texas.
| Population | 183,428 |
| Coordinates | 25.9017500, -97.4974800 |
| Altitude | 10 |
| Country | United States |
End: Brownsville (-97.49748, 25.90175)
Estimated Travel Time
Distance: 543 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 14m |
| 40 mph (64.37 km/h) | 08h 26m |
| 50 mph (80.47 km/h) | 06h 44m |
| 60 mph (96.56 km/h) | 05h 37m |
| 70 mph (112.65 km/h) | 04h 49m |
| 80 mph (129 km/h) | 04h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $45.01 | $90.02 |
| Mid-grade | $4.25 | $50.64 | $101.28 |
| Premium | $4.59 | $54.68 | $109.36 |
| Diesel | $3.99 | $47.56 | $95.11 |
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.