How far is Austin, TX from Sour Lake, TX?
The driving distance from Austin, TX to Sour Lake, TX is about 229.7 miles (369.6 km), with a travel time of about 04h 25m by car.
- The straight-line flight distance is about 199.1 miles (320.5 km).
- For a round trip, plan for roughly 08h 50m 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 25m.
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 Texas
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Austin and Sour Lake.
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin and Sour Lake.
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1
Start on East 5th Street
1836 ft · 52 sec · East 5th Street
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2
Turn left onto Red River Street
711 ft · 20 sec · Red River Street
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3
Turn right onto East 7th Street
757 ft · 17 sec · East 7th Street
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4
Turn left onto North Interstate 35
928 ft · 27 sec · North Interstate 35
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5
Take the ramp slight left toward I 35 North, US 290 East
906 ft · 22 sec
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6
Merge slight left onto Purple Heart Trail
2985 ft · 42 sec · Purple Heart Trail
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7
Keep slight right to continue on Purple Heart Trail
2.9 mi · 4 min · Purple Heart Trail
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8
Take the exit slight right toward US 290 East: Houston
2.5 mi · 4 min
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9
Continue on Manor Expressway
6.2 mi · 6 min · Manor Expressway
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10
Continue on East US Highway 290
41.5 mi · 48 min · East US Highway 290
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11
Continue on West Austin Street
32.9 mi · 37 min · West Austin Street
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12
Take the exit slight right toward US 290 East, TX 36 South: Houston, Bellville
1393 ft · 38 sec
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13
Merge slight left onto US Highway 290 West
41.8 mi · 47 min · US Highway 290 West
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14
Take the exit slight right toward TX 99 Toll North, TX 99 Toll South: Grand Parkway
2269 ft · 48 sec
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15
Keep slight left to continue on TX 99 Toll North: Grand Parkway
3125 ft · 1 min
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16
Merge slight left onto North Grand Parkway West
56.2 mi · 1 hr · North Grand Parkway West
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17
Take the exit slight right toward FM 1960: Dayton, Humble
2361 ft · 1 min
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18
Turn left
5.1 mi · 7 min
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19
Turn right onto North Cleveland Street
1028 ft · 25 sec · North Cleveland Street
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20
Turn left onto United States Highway 90 West
10 mi · 12 min · United States Highway 90 West
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21
Continue on US Highway 90
19.5 mi · 22 min · US Highway 90
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22
Turn left
7.1 mi · 11 min
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23
Turn left onto 5th Street
2377 ft · 40 sec · 5th Street
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24
Arrive at your destination
0 m · 1 sec · 5th Street
Car Route Details
A richer read on the saved driving route between Austin and Sour Lake.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
North Grand Parkway West
Merge slight left onto North Grand Parkway West
56.2 mi · 01h 00m
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.
Chance Showers And Thunderstorms leaving Austin and Chance Showers And Thunderstorms then Showers And Thunderstorms near Sour Lake.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Austin to Sour Lake?
The road trip is about 229.7 miles (369.6 km) and usually takes 04h 25m 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?
Prairie View is a useful midpoint, sitting about 114.7 miles from Austin and 115 miles from Sour Lake.
How much longer is the road route than the straight-line distance?
The direct path is about 199.1 miles (320.5 km), while the road route adds roughly 30.6 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 8:10 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.61 one way or $61.22 round trip. Estimated CO2 is about 72 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Austin and Chance Showers And Thunderstorms then Showers And Thunderstorms near Sour Lake.
Stop Ideas Near Prairie View
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 Prairie View.
Prairie View, TX
Houston
Houston, TX
Bryan, TX
Flight Path Map
This map shows the direct air route between Austin and Sour Lake. Straight-line distance: 199.16 mi (320.51 km).
#1 Austin
The eleventh most populous city in the United States and the center of the Austin metropolitan area.
| Population | 995,484 |
| Coordinates | 30.2671500, -97.7430600 |
| Altitude | 149 |
| Country | United States |
#2 Sour Lake
City in Hardin County, Texas, United States
| Population | 1,948 |
| Coordinates | 30.1402100, -94.4110200 |
| Altitude | 15 |
| Country | United States |
End: Sour Lake (-94.41102, 30.14021)
Estimated Travel Time
Distance: 370 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 39m |
| 40 mph (64.37 km/h) | 05h 44m |
| 50 mph (80.47 km/h) | 04h 35m |
| 60 mph (96.56 km/h) | 03h 49m |
| 70 mph (112.65 km/h) | 03h 16m |
| 80 mph (129 km/h) | 02h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $30.61 | $61.22 |
| Mid-grade | $4.25 | $34.44 | $68.88 |
| Premium | $4.59 | $37.19 | $74.37 |
| Diesel | $3.99 | $32.34 | $64.69 |
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.