Rockwall, TX to Brownsville, TX is 548.5 miles and takes about 10h 3m via U.S. Highway 77, with a fuel budget near $80 and likely an overnight stop. This is a long-haul drive that takes you through the Great Plains region of Texas. While both the departure and arrival points are in the same region, the route spans a significant portion of the state. Consider this trip if you're looking for a straightforward drive that covers a lot of ground efficiently. It's a practical choice for getting from the Dallas-Fort Worth area down to the southern tip of Texas.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
274.3 miles from Rockwall, TX
A natural place for your longest stop of the day
, about 4h 53m into the drive
.
Main Roads
Road
Distance
Duration
U.S. Highway 77
105 mi
1h 56m
South R L Thornton Freeway
89.9 mi
1h 32m
TX 130 Toll
58.5 mi
54m
TX 80
51.2 mi
56m
South US Highway 181
40.2 mi
45m
Purple Heart Trail
37.9 mi
39m
I 69E
31.3 mi
33m
I 35
26.5 mi
26m
Longest stretch:
U.S. Highway 77
— 105 mi, about 1h 56m
Traffic on I-35
Hour-of-day weekday pattern from 24 FHWA count stations on your route.
Peak
4 PM
~4,007 veh/hr typical
· worst 4,783
Quietest
2 AM
~579 veh/hr
Peak-to-quiet ratio
6.9×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 51 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Rockwall, TX and Brownsville, TX.
1
Start on this road
169 ft·14 sec·this road
2
Turn left onto TX 205
222 ft·13 sec·North Goliad Street
3
Turn left onto West Kaufman Street
261 ft·16 sec·West Kaufman Street
4
Turn left onto TX 205
0.2 mi·29 sec·North Alamo Road
5
Continue on TX 205
0.5 mi·1 min·South Goliad Street
6
Turn slight right
459 ft·16 sec
7
Turn straight onto FM 740
1.7 mi·3 min·Ridge Road
8
Turn right onto East Interstate 30
0.4 mi·41 sec·East Interstate 30
9
Take the ramp
0.3 mi·35 sec
Toward I 30 West
10
Merge onto I 30; US 67
20 mi·24 min·Congressman Ralph Hall Highway
Use the straight / slight right lanes.
11
Take the exit
0.6 mi·1 min
Exit 46AToward I 35E: Denton, WacoUse the straight / slight right lanes.
12
Keep slight left at fork
0.1 mi·14 sec
Toward I 35E South, I 35E North: Waco, Denton
13
Keep slight left at fork
221 ft·5 sec
Toward I 35E North, I 35E South: Denton, WacoUse the straight / slight right lanes.
14
Keep slight left at fork
0.4 mi·30 sec
Toward I 35E South: WacoUse the left / right lanes.
15
Continue on I 35E
0.5 mi·44 sec·South R L Thornton Freeway
16
Continue on I 35E
89 mi·1 hr 31 min·South R L Thornton Freeway
Exit 426Toward Dallas ZooUse the straight / slight right lanes.
17
Continue on I 35; US 77
6.6 mi·7 min·North Jack Kultgen Expressway
Use the straight / slight right lanes.
18
Continue on I 35
38 mi·39 min·Purple Heart Trail
Use the straight / slight right lanes.
19
Keep slight left at fork onto I 35
26 mi·26 min·I 35
Use the straight / slight right lanes.
20
Take the exit
0.7 mi·55 sec
Exit 265Toward TX 130 Toll South: San AntonioUse the slight right lane.
21
Continue on TX 130 Toll
59 mi·54 min·TX 130 Toll
Use the straight / slight right lanes.
22
Take the exit
0.2 mi·29 sec
Exit 470Toward US 183 South: LockhartUse the straight / slight right lanes.
23
Continue on US 183
0.5 mi·35 sec·United States Highway 183
24
Continue on US 183
4.9 mi·8 min·North Colorado Street
25
Continue on US 183
10 mi·11 min·US 183
26
Continue on US 183
4.2 mi·6 min·North Magnolia Avenue
27
Continue on TX 80
51 mi·56 min·TX 80
28
Turn slight left onto FM 792
8.4 mi·10 min·Farm-to-Market Road 792
29
Continue on TX 72; TX 239
0.8 mi·1 min·East Main Street
30
Turn left onto US 181
1.2 mi·1 min·South Sunset Strip Drive
31
Continue on US 181
40 mi·45 min·South US Highway 181
32
Continue on US 181
0.8 mi·55 sec·North 8th Street
33
Continue on US 181
16 mi·18 min·US Highway 181 South
34
Take the exit onto US 181
0.3 mi·45 sec·US 181
35
Keep slight right at fork onto US 181
213 ft·5 sec·US Route 181
36
Turn straight onto US 181
0.7 mi·1 min·US Highway 181
37
Take the ramp
0.4 mi·46 sec
38
Merge onto US 77
12 mi·13 min·US 77
39
Take the exit onto US 77
0.1 mi·13 sec·US 77
Toward I 37, US 77, I 69E
40
Keep slight left at fork
0.4 mi·47 sec
41
Merge onto I 37; US 77; I 69E
2.5 mi·2 min·I 37; US 77; I 69E
Use the straight lane.
42
Take the exit onto I 69E; US 77
31 mi·33 min·I 69E; US 77
Toward I 69E, US 77: Kingsville, BrownsvilleUse the straight / slight right lanes.
43
Keep slight left at fork onto US 77
61 mi·1 hr 9 min·U.S. Highway 77
44
Keep slight left at fork onto I 69E; US 77
44 mi·46 min·U.S. Highway 77
Use the straight / slight right lanes.
45
Continue on I 69E; US 77; US 83
2.1 mi·2 min·North Expressway
46
Keep slight left at fork onto I 69E; US 77; US 83
9.0 mi·10 min·North Expressway
Use the straight / slight right lanes.
47
Take the exit
0.3 mi·42 sec
Exit 1BToward 12th-14th StreetUse the slight right lane.
48
Turn straight onto South Expressway
331 ft·8 sec·South Expressway
49
Turn right onto East 12th Street
0.7 mi·1 min·East 12th Street
Use the right lane.
50
Turn right onto US 77 Business
29 ft·0 sec·East Washington Street
51
Arrive at destination
US 77 Business
Trip Plan
Given the 10-hour drive time, planning for an overnight stop is highly recommended to make this trip more manageable. Aim to depart early in the morning to maximize your daylight driving hours. With two recommended stops, you can break up the 548.5 miles into roughly two equal driving days. Keep an eye on your fuel levels, especially during the 105-mile stretch on U.S. Highway 77, as services might be less frequent in certain areas. The estimated fuel cost is around $80, so budget accordingly.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 274.3 miles from Rockwall, TX, or about 4h 53m into the drive.
The longest continuous stretch on this route runs about 105 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 121 miles or 2h 12m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 274.3 miles or 4h 53m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 274.3 miles or 4h 53m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 8h 57m
Traffic, exits, and arrival timing usually matter more near Brownsville, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Rockwall, TX so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Rockwall, TX
Aim for roughly 274 miles and 5 hours of wheel time on this day.
Day 2
Finish the approach into Brownsville, TX
Aim for roughly 274 miles and 5 hours of wheel time on this day.
Your first comfortable stop window is around 121 miles from Rockwall, TX.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on U.S. Highway 77 for about 105 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 29
5 decision points cluster between mile 23.8 and 244.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
23.8 mi into trip|~31m in
Take the exit toward I 35E: Denton, Waco
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 46A
Toward I 35E: Denton, Waco
9
24.4 mi into trip|~32m in
Keep slight left at fork toward I 35E North, I 35E South: Denton, Waco
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 35E North, I 35E South: Denton, Waco
7
24.5 mi into trip|~32m in
Keep slight left at fork toward I 35E South: Waco
Highway fork - watch signs carefully. Lane positioning matters here
Use the left / right lanes.
Toward I 35E South: Waco
7
185.7 mi into trip|~3h 19m in
Take the exit toward TX 130 Toll South: San Antonio
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 265
Toward TX 130 Toll South: San Antonio
7
244.9 mi into trip|~4h 15m in
Take the exit toward US 183 South: Lockhart
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 470
Toward US 183 South: Lockhart
Fuel & Cost
Regular Gas
$75.13 one way
$150.25 round trip
$3.48/gal25.4 MPG avg192 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$3.89
$83.92
$167.83
premium
$4.23
$91.24
$182.47
diesel
$4.80
$103.57
$207.13
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$75
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$205–$315
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 191.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $58 in charging
· 2 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
164.6
2
$57.59
$26.33
Efficient EV
137.1
1
$47.99
$21.94
EV Truck/SUV
219.4
2
$76.79
$35.10
Gas CO2
192 kg
EV CO2
64 kg (67% less)
Plan for 2 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jul 16, 2026
Origin
Rockwall, TX
Morning
in Rockwall on Sunday
Local time
10:25 AM
CDT
Current temp
89°F
Chance Showers And Thunderstorms
S 10 mph40% chanceLive forecast
Severe Thunderstorm Warning
Severe Thunderstorm Warning issued July 16 at 4:33PM CDT until July 16 at 4:45PM CDT by NWS Midland/Odessa TX
Special Weather Statement
Special Weather Statement issued July 16 at 4:29PM CDT by NWS Fort Worth TX
Destination
Brownsville, TX
Morning
in Brownsville on Sunday
Local time
10:25 AM
CDT
Current temp
94°F
Partly Sunny
SE 17 mph5% chanceLive forecast
Severe Thunderstorm Warning
Severe Thunderstorm Warning issued July 16 at 4:33PM CDT until July 16 at 4:45PM CDT by NWS Midland/Odessa TX
Special Weather Statement
Special Weather Statement issued July 16 at 4:29PM CDT by NWS Fort Worth TX
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
5 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
10h 3m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Waco Mammoth National Monument
National Monument
Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...
4 mi from route
~10 min detour
Free
near mile 113.5
On May 8, 1846, U.S. and Mexican troops clashed on the prairie of Palo Alto. The battle was the first in a two-year long war that changed the map of North America. Although the two countries have deve...
9 mi from route
~22 min detour
Free
near mile 548.5
Protecting sixty-six miles of wild coastline along the Gulf of America, the narrow barrier island is home to one of the last intact coastal prairie habitats in the United States. Along the hypersaline...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is predominantly highway driving, with 84% of the 548.5 miles on main roads like U.S. Highway 77 and TX 130 Toll. You'll encounter your longest stretch without a major change in direction at 105 miles on U.S. Highway 77. Expect to transition from high-speed highway cruising to surface roads as you approach your destination, which can involve more frequent exits and potentially slower traffic.
84% highway — fuel and pacing are the main things to plan.
51 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 105 mi on U.S. Highway 77.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on U.S. Highway 77 and South R L Thornton Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 23.8 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 29 significant decision points across 548.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 23.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 24.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 24.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Located at the southernmost tip of Texas, Brownsville is a popular location for Mexican and American beach tourists. It is part of the Rio Grande Valley, a four-county region known for its abundance in citrus fruit production and Winter Texan population. The city features a combination of different climate regimes: Gulf Coast plains and the Great Plains. There is a lot to do in this city: historical museums, art galleries, beaches, birding locations and natural wildlife refuges. As Brownsville is a border town, its culture is predominantly Hispanic.
The longest stretch is about 105 miles on U.S. Highway 77. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 274 miles on day one.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Brownsville, TX before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 23.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 24.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 24.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Waco Mammoth National Monument, Palo Alto Battlefield National Historical Park and Padre Island National Seashore. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 10.1 hours each way, a round trip means 20.1 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Brownsville, TX before the return drive.
