How far is Houston, TX from Roma, TX?
The driving distance from Houston, TX to Roma, TX is about 401.8 miles (646.6 km), with a travel time of about 07h 39m by car.
- The straight-line flight distance is about 321.6 miles (517.5 km).
- For a round trip, plan for roughly 15h 19m 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 07h 39m.
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 San Patricio County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Houston and Roma.
Turn-by-Turn Driving Directions
Step-by-step road directions between Houston and Roma.
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1
Start on Louisiana Street
45 m · 12 sec · Louisiana Street
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2
Turn left onto Congress Street
91 m · 15 sec · Congress Street
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3
Turn left onto Smith Street
2.7 mi · 6 min · Smith Street
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4
Merge slight left onto Southwest Freeway
32.8 mi · 38 min · Southwest Freeway
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5
Take the exit slight right toward Spur 10: Cottonwood, Church Road, Hartledge Road
1158 ft · 28 sec
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6
Turn straight onto Southwest Freeway Frontage Road
1.5 km · 2 min · Southwest Freeway Frontage Road
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7
Continue on Southwest Freeway Frontage Road
2217 ft · 1 min · Southwest Freeway Frontage Road
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8
Continue on US 59 Southbound Frontage Road
1.4 km · 2 min · US 59 Southbound Frontage Road
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9
Take the ramp straight
1027 ft · 25 sec
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10
Merge slight left
9.2 mi · 11 min
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11
Keep slight left
6.6 mi · 8 min
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12
Take the exit slight right
1.5 mi · 2 min
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13
Continue on US Highway 59
74.7 mi · 1 hr 22 min · US Highway 59
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14
Keep slight left to continue on Spur 91
1.6 km · 1 min · Spur 91
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15
Merge slight right onto US Highway 77 South
33.2 mi · 38 min · US Highway 77 South
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16
Turn straight onto Alamo Street
37.1 mi · 43 min · Alamo Street
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17
Take the exit straight toward I 37, US 77, I 69E
538 ft · 13 sec
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18
Keep slight left
1965 ft · 48 sec
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19
Merge slight right
2.5 mi · 2 min
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20
Take the exit slight right toward I 69E, US 77: Kingsville, Brownsville
28.6 mi · 31 min
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21
Take the exit slight right toward TX 141
741 ft · 18 sec
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22
Turn straight onto South US Highway 77 Bypass
774 ft · 25 sec · South US Highway 77 Bypass
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23
Turn right onto East King Avenue
16.2 mi · 21 min · East King Avenue
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24
Take the ramp left
1804 ft · 49 sec
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25
Merge slight left
11 mi · 13 min
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26
Keep slight left
9.5 mi · 10 min
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27
Keep slight left to continue on Falfurrias Expressway
55.8 mi · 59 min · Falfurrias Expressway
-
28
Keep slight left
17.6 mi · 19 min
-
29
Take the exit slight right toward US 281 South, TX 495: Pharr
1.3 km · 2 min
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30
Merge slight right
42.1 mi · 48 min
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31
Continue on East Main Street
1.3 mi · 2 min · East Main Street
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32
Continue on East 2nd Street
2898 ft · 42 sec · East 2nd Street
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33
Continue on West 2nd Street
2666 ft · 37 sec · West 2nd Street
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34
Continue on United States Highway 83
7.7 mi · 9 min · United States Highway 83
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35
Continue on East Grant Street
4.7 mi · 6 min · East Grant Street
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36
Turn slight right onto Garcia Street
1113 ft · 24 sec · Garcia Street
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37
Turn left onto East Bravo Boulevard
92 m · 14 sec · East Bravo Boulevard
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38
Turn left onto North Grant Street
10 m · 1 sec · North Grant Street
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39
Arrive at your destination
0 m · 1 sec · North Grant Street
Car Route Details
A richer read on the saved driving route between Houston and Roma.
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.
Partly Sunny then Slight Chance Showers And Thunderstorms leaving Houston and Mostly Sunny near Roma.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Houston to Roma?
The road trip is about 401.8 miles (646.6 km) and usually takes 07h 39m 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?
Odem is a useful midpoint, sitting about 201.1 miles from Houston and 200.7 miles from Roma.
How much longer is the road route than the straight-line distance?
The direct path is about 321.6 miles (517.5 km), while the road route adds roughly 80.2 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 $53.59 one way or $107.17 round trip. Estimated CO2 is about 126 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Slight Chance Showers And Thunderstorms around Houston and Mostly Sunny near Roma.
Flight Path Map
This map shows the direct air route between Houston and Roma. Straight-line distance: 321.53 mi (517.46 km).
#1 Houston
The fourth most populous city in the United States and the center of the Houston metropolitan area.
| Population | 2,316,120 |
| Coordinates | 29.7632800, -95.3632700 |
| Altitude | 12 |
| Country | United States |
#2 Roma
City in Starr County, Texas, United States of America
| Population | 11,476 |
| Coordinates | 26.4050600, -99.0158600 |
| Altitude | 65 |
| Country | United States |
End: Roma (-99.01586, 26.40506)
Estimated Travel Time
Distance: 647 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 23m |
| 40 mph (64.37 km/h) | 10h 02m |
| 50 mph (80.47 km/h) | 08h 02m |
| 60 mph (96.56 km/h) | 06h 41m |
| 70 mph (112.65 km/h) | 05h 44m |
| 80 mph (129 km/h) | 05h 00m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $53.59 | $107.17 |
| Mid-grade | $4.25 | $60.29 | $120.59 |
| Premium | $4.59 | $65.10 | $130.20 |
| Diesel | $3.99 | $56.62 | $113.24 |
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.