How far is Dallas, TX from Sour Lake, TX?
The driving distance from Dallas, TX to Sour Lake, TX is about 266.8 miles (429.4 km), with a travel time of about 05h 12m by car.
- The straight-line flight distance is about 230.8 miles (371.4 km).
- For a round trip, plan for roughly 10h 24m 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 05h 12m.
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 Leon County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Dallas and Sour Lake.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dallas and Sour Lake.
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1
Start on North Lamar Street
132 m · 14 sec · North Lamar Street
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2
Turn right onto McKinney Avenue
1118 ft · 25 sec · McKinney Avenue
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3
Take the ramp slight left toward US 75 North
1229 ft · 30 sec
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4
Merge slight left onto Woodall Rodgers Freeway
2170 ft · 37 sec · Woodall Rodgers Freeway
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5
Keep slight right to continue on I 45 South: Houston
2537 ft · 49 sec
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6
Merge slight left onto Julius Schepps Freeway
3.1 mi · 4 min · Julius Schepps Freeway
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7
Keep slight left to continue on Julius Schepps Freeway
185.2 mi · 3 hr 8 min · Julius Schepps Freeway
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8
Take the exit slight right toward Calvary Road
1264 ft · 31 sec
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9
Continue on Interstate 45 North Frontage Road
2957 ft · 1 min · Interstate 45 North Frontage Road
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10
Turn left onto Calvary Road
1223 ft · 36 sec · Calvary Road
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11
At the end of the road, turn right onto North State Highway 75
2 mi · 3 min · North State Highway 75
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12
Continue on North Danville Street
2760 ft · 57 sec · North Danville Street
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13
Turn left onto East Powell Street
5.1 mi · 9 min · East Powell Street
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14
Continue on Willis Waukegan Road
5.8 mi · 9 min · Willis Waukegan Road
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15
Turn left onto State Highway 105
15.2 mi · 23 min · State Highway 105
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16
At the end of the road, turn left onto Washington Avenue
2872 ft · 52 sec · Washington Avenue
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17
Turn right onto East Houston Street
6.2 mi · 9 min · East Houston Street
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18
Turn left
27.8 mi · 41 min
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19
Continue straight
13 mi · 19 min
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20
Arrive at your destination
0 m · 1 sec · 5th Street
Car Route Details
A richer read on the saved driving route between Dallas 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.
Julius Schepps Freeway
Keep slight left to continue on Julius Schepps Freeway
185 mi · 03h 08m
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.
Sunny leaving Dallas and Sunny near Sour Lake.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dallas to Sour Lake?
The road trip is about 266.8 miles (429.4 km) and usually takes 05h 12m 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?
Leona is a useful midpoint, sitting about 133.5 miles from Dallas and 133.3 miles from Sour Lake.
How much longer is the road route than the straight-line distance?
The direct path is about 230.8 miles (371.4 km), while the road route adds roughly 36 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 6:36 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.60 one way or $71.20 round trip. Estimated CO2 is about 83.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Dallas and Sunny near Sour Lake.
Stop Ideas Near Leona
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 Leona.
Bryan, TX
Waco, TX
Flight Path Map
This map shows the direct air route between Dallas and Sour Lake. Straight-line distance: 230.8 mi (371.44 km).
#1 Dallas
The ninth most populous city in the United States and the center of the Dallas-Fort Worth metropolitan area.
| Population | 1,343,266 |
| Coordinates | 32.7830600, -96.8066700 |
| Altitude | 128 |
| 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: 429 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 53m |
| 40 mph (64.37 km/h) | 06h 40m |
| 50 mph (80.47 km/h) | 05h 20m |
| 60 mph (96.56 km/h) | 04h 26m |
| 70 mph (112.65 km/h) | 03h 48m |
| 80 mph (129 km/h) | 03h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $35.60 | $71.20 |
| Mid-grade | $4.25 | $40.05 | $80.11 |
| Premium | $4.59 | $43.25 | $86.49 |
| Diesel | $3.99 | $37.61 | $75.23 |
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 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.