How far is Montopolis, TX from Sweeny, TX?
The driving distance from Montopolis, TX to Sweeny, TX is about 169.8 miles (273.3 km), with a travel time of about 03h 35m by car.
- The straight-line flight distance is about 145.7 miles (234.5 km).
- For a round trip, plan for roughly 07h 11m 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 03h 35m.
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 Colorado 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 Montopolis and Sweeny.
Turn-by-Turn Driving Directions
Step-by-step road directions between Montopolis and Sweeny.
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1
Start on 183 Toll South: Lockhart
67 m · 5 sec
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2
Merge slight left onto Bergstrom Expressway
1.3 km · 47 sec · Bergstrom Expressway
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3
Continue on Bastrop Highway
2119 ft · 26 sec · Bastrop Highway
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4
Take the exit slight left toward TX 71 East: Austin-Bergstrom International Airport
2541 ft · 1 min
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5
Continue on East State Highway 71
2.2 mi · 3 min · East State Highway 71
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6
Turn straight onto Bastrop Freeway
1.9 mi · 2 min · Bastrop Freeway
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7
Continue on East State Highway 71
2388 ft · 29 sec · East State Highway 71
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8
Continue on Texas State Highway 71
78.7 mi · 1 hr 24 min · Texas State Highway 71
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9
Take the exit slight right toward TX 71 East, TX 71 BUS: Columbus, El Campo
111 m · 9 sec
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10
Continue on TX 71 East, TX 71 BUS: Columbus, El Campo
1368 ft · 36 sec
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11
Turn right onto State Highway 71 South
9.7 mi · 10 min · State Highway 71 South
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12
Turn left onto US Highway 90A
7.4 mi · 8 min · US Highway 90A
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13
Continue on South McCarty Avenue
1.3 km · 2 min · South McCarty Avenue
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14
Continue on Boothe Drive
1844 ft · 54 sec · Boothe Drive
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15
Continue on East Main Street
1.3 km · 2 min · East Main Street
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16
Continue on US Highway 90A
5.4 mi · 6 min · US Highway 90A
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17
Continue on Main Street
1.3 km · 1 min · Main Street
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18
Continue on US Highway 90A
9.1 mi · 13 min · US Highway 90A
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19
Continue on Main Street
1.4 mi · 2 min · Main Street
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20
Continue on US Highway 90A West
5 mi · 7 min · US Highway 90A West
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21
Turn right onto Beasley Road
1.8 mi · 3 min · Beasley Road
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22
Continue on Taverner Road
2.8 mi · 5 min · Taverner Road
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23
At the end of the road, turn right
1 km · 1 min
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24
Turn left
8.9 mi · 16 min
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25
Turn right onto TX-36
20.4 mi · 31 min · TX-36
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26
Turn sharp right onto West Brazos Avenue
4.6 mi · 7 min · West Brazos Avenue
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27
Turn left
3.5 mi · 6 min
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28
Keep slight left to continue on North McKinney Street
1588 ft · 32 sec · North McKinney Street
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29
Turn straight onto East 2nd Street
1.3 km · 1 min · East 2nd Street
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30
Turn left onto North Main Street
24 m · 2 sec · North Main Street
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31
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Montopolis 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.
Texas State Highway 71
Continue on Texas State Highway 71
78.7 mi · 01h 24m
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 Montopolis 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 Montopolis to Sweeny?
The road trip is about 169.8 miles (273.3 km) and usually takes 03h 35m 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?
Columbus is a useful midpoint, sitting about 84.9 miles from Montopolis and 84.9 miles from Sweeny.
How much longer is the road route than the straight-line distance?
The direct path is about 145.7 miles (234.5 km), while the road route adds roughly 24.1 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 9:48 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $22.64 one way or $45.27 round trip. Estimated CO2 is about 53.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Montopolis and Mostly Cloudy near Sweeny.
Stop Ideas Near Columbus
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 Columbus.
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Flight Path Map
This map shows the direct air route between Montopolis and Sweeny. Straight-line distance: 145.72 mi (234.51 km).
#1 Montopolis
This Travis County community, situated at an elevation of 469 feet, is known for its Colorado River industrial areas.
| Population | 912,791 |
| Coordinates | 30.2432700, -97.6905600 |
| Altitude | 143 |
| 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: 273 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 39m |
| 40 mph (64.37 km/h) | 04h 14m |
| 50 mph (80.47 km/h) | 03h 23m |
| 60 mph (96.56 km/h) | 02h 49m |
| 70 mph (112.65 km/h) | 02h 25m |
| 80 mph (129 km/h) | 02h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $22.64 | $45.27 |
| Mid-grade | $4.25 | $25.47 | $50.94 |
| Premium | $4.59 | $27.50 | $55.00 |
| Diesel | $3.99 | $23.92 | $47.84 |
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.