How far is San Antonio, TX from Sweeny, TX?
The driving distance from San Antonio, TX to Sweeny, TX is about 206.5 miles (332.3 km), with a travel time of about 04h 10m by car.
- The straight-line flight distance is about 170.6 miles (274.6 km).
- For a round trip, plan for roughly 08h 21m 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 04h 10m.
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 Fayette County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between San Antonio and Sweeny.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Sweeny.
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1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
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2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
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3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
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4
Turn left
111 m · 13 sec
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5
Turn straight onto East Commerce Street
1.2 km · 1 min · East Commerce Street
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6
Keep slight left to continue on East Commerce Street
2.7 mi · 4 min · East Commerce Street
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7
Turn slight right onto East Houston Street
1349 ft · 31 sec · East Houston Street
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8
Turn left onto Interstate 10 East
583 ft · 12 sec · Interstate 10 East
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9
Take the ramp slight left toward I 10 East, US 90 East
874 ft · 21 sec
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10
Merge slight left onto Jose Lopez Freeway
1.8 mi · 2 min · Jose Lopez Freeway
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11
Continue on 90th Infantry Division Highway
22.2 mi · 23 min · 90th Infantry Division Highway
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12
Continue on I 10 East: Houston, Austin, Waco
92.8 mi · 1 hr 33 min
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13
Take the exit slight right toward TX 71 East, TX 71 BUS: Columbus, El Campo
111 m · 9 sec
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14
Continue on TX 71 East, TX 71 BUS: Columbus, El Campo
1368 ft · 36 sec
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15
Turn right onto State Highway 71 South
9.7 mi · 10 min · State Highway 71 South
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16
Turn left onto US Highway 90A
7.4 mi · 8 min · US Highway 90A
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17
Continue on South McCarty Avenue
1.3 km · 2 min · South McCarty Avenue
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18
Continue on Boothe Drive
1844 ft · 54 sec · Boothe Drive
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19
Continue on East Main Street
1.3 km · 2 min · East Main Street
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20
Continue on US Highway 90A
5.4 mi · 6 min · US Highway 90A
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21
Continue on Main Street
1.3 km · 1 min · Main Street
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22
Continue on US Highway 90A
9.1 mi · 13 min · US Highway 90A
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23
Continue on Main Street
1.4 mi · 2 min · Main Street
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24
Continue on US Highway 90A West
5 mi · 7 min · US Highway 90A West
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25
Turn right onto Beasley Road
1.8 mi · 3 min · Beasley Road
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26
Continue on Taverner Road
2.8 mi · 5 min · Taverner Road
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27
At the end of the road, turn right
1 km · 1 min
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28
Turn left
8.9 mi · 16 min
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29
Turn right onto TX-36
20.4 mi · 31 min · TX-36
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30
Turn sharp right onto West Brazos Avenue
4.6 mi · 7 min · West Brazos Avenue
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31
Turn left
3.5 mi · 6 min
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32
Keep slight left to continue on North McKinney Street
1588 ft · 32 sec · North McKinney Street
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33
Turn straight onto East 2nd Street
1.3 km · 1 min · East 2nd Street
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34
Turn left onto North Main Street
24 m · 2 sec · North Main Street
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35
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between San Antonio and Sweeny.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 10 East
Continue on I 10 East: Houston, Austin, Waco
92.8 mi · 01h 33m
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 San Antonio and Mostly Cloudy near Sweeny.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Sweeny?
The road trip is about 206.5 miles (332.3 km) and usually takes 04h 10m 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?
Schulenburg is a useful midpoint, sitting about 103.1 miles from San Antonio and 103.3 miles from Sweeny.
How much longer is the road route than the straight-line distance?
The direct path is about 170.6 miles (274.6 km), while the road route adds roughly 35.9 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 8:38 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.55 one way or $55.10 round trip. Estimated CO2 is about 64.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Mostly Cloudy near Sweeny.
Stop Ideas Near Schulenburg
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 Schulenburg.
Prairie View, TX
San Marcos Station
Austin
Taylor
Flight Path Map
This map shows the direct air route between San Antonio and Sweeny. Straight-line distance: 170.61 mi (274.57 km).
#1 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
#2 Sweeny
City in Brazoria County, Texas, United States
| Population | 3,618 |
| Coordinates | 29.0388600, -95.6985600 |
| Altitude | 9 |
| Country | United States |
End: Sweeny (-95.69856, 29.03886)
Estimated Travel Time
Distance: 332 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 52m |
| 40 mph (64.37 km/h) | 05h 09m |
| 50 mph (80.47 km/h) | 04h 07m |
| 60 mph (96.56 km/h) | 03h 26m |
| 70 mph (112.65 km/h) | 02h 56m |
| 80 mph (129 km/h) | 02h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $27.55 | $55.10 |
| Mid-grade | $4.25 | $31.00 | $61.99 |
| Premium | $4.59 | $33.47 | $66.94 |
| Diesel | $3.99 | $29.11 | $58.22 |
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 · May 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.