How far is Sweetwater, TX from San Leon, TX?
The driving distance from Sweetwater, TX to San Leon, TX is about 452.4 miles (728.1 km), with a travel time of about 08h 27m by car.
- The straight-line flight distance is about 384.8 miles (619.3 km).
- For a round trip, plan for roughly 16h 55m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CST.
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 08h 27m.
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.
The fifth most populous city in Williamson County, Texas.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Sweetwater and San Leon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sweetwater and San Leon.
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1
Start on Lamar Street
32 m · 9 sec · Lamar Street
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2
Turn left onto East Broadway Street
117 m · 14 sec · East Broadway Street
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3
Turn left onto Lamar Street
2.3 mi · 4 min · Lamar Street
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4
Continue on State Highway 70
10.4 mi · 11 min · State Highway 70
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5
Turn left onto State Highway 153
69 mi · 1 hr 14 min · State Highway 153
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6
Continue on West Walnut Street
1.6 km · 2 min · West Walnut Street
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7
Continue on East Walnut Street
1.5 km · 1 min · East Walnut Street
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8
At the end of the road, turn left
9.4 mi · 11 min
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9
Continue straight
21.5 mi · 25 min
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10
Turn right onto Garmon Drive
1.3 mi · 1 min · Garmon Drive
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11
Continue on US Highway 84 East
29.2 mi · 33 min · US Highway 84 East
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12
Turn right
22.2 mi · 25 min
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13
Continue straight
14.8 mi · 15 min
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14
Merge slight left onto North US Highway 281
79 m · 4 sec · North US Highway 281
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15
Continue on North Key Avenue
2.3 mi · 5 min · North Key Avenue
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16
Continue on South US Highway 183
35.3 mi · 38 min · South US Highway 183
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17
Continue straight
2151 ft · 30 sec
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18
Keep slight left to continue on 183A Toll Road
14.3 mi · 14 min · 183A Toll Road
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19
Continue straight
14.8 mi · 17 min
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20
Continue on Bergstrom Expressway
6.3 mi · 7 min · Bergstrom Expressway
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21
Continue on Bastrop Highway
2119 ft · 26 sec · Bastrop Highway
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22
Take the exit slight left toward TX 71 East: Austin-Bergstrom International Airport
2541 ft · 1 min
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23
Continue on East State Highway 71
2.2 mi · 3 min · East State Highway 71
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24
Turn straight onto Bastrop Freeway
1.9 mi · 2 min · Bastrop Freeway
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25
Continue on East State Highway 71
2388 ft · 29 sec · East State Highway 71
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26
Continue on Texas State Highway 71
137 mi · 2 hr 25 min · Texas State Highway 71
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27
Take the exit slight left toward I 10 Toll: Katy Tollway
1548 ft · 22 sec
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28
Merge slight left onto Katy Tollway
3.2 mi · 4 min · Katy Tollway
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29
Take the exit slight right
1092 ft · 15 sec
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30
Merge slight right onto Katy Freeway
10.3 mi · 13 min · Katy Freeway
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31
Take the exit slight left toward I 45 South: Galveston
819 ft · 20 sec
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32
Merge slight left onto Gulf Freeway
28.4 mi · 33 min · Gulf Freeway
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33
Take the exit slight right toward FM 517: Dickinson
1204 ft · 29 sec
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34
Turn straight onto South Gulf Freeway Frontage Road
1.4 km · 2 min · South Gulf Freeway Frontage Road
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35
Turn left onto Pine Drive
1.5 mi · 2 min · Pine Drive
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36
Continue on Pine Street
1717 ft · 31 sec · Pine Street
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37
Continue on Main Street
2280 ft · 40 sec · Main Street
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38
Turn slight right onto 41st Street East
4.2 mi · 6 min · 41st Street East
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39
Continue on Avenue S
1.6 mi · 3 min · Avenue S
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40
Turn slight right
2.8 mi · 5 min
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41
Arrive at your destination
0 m · 1 sec · Avenue I
Car Route Details
A richer read on the saved driving route between Sweetwater and San Leon.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Texas State Highway 71
Continue on Texas State Highway 71
137 mi · 02h 25m
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.
Sunny leaving Sweetwater and Mostly Sunny near San Leon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sweetwater to San Leon?
The road trip is about 452.4 miles (728.1 km) and usually takes 08h 27m 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?
Leander is a useful midpoint, sitting about 226.1 miles from Sweetwater and 226.4 miles from San Leon.
How much longer is the road route than the straight-line distance?
The direct path is about 384.8 miles (619.3 km), while the road route adds roughly 67.6 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 7:30 AM CST. 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 $55.06 one way or $110.12 round trip. Estimated CO2 is about 141.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Sweetwater and Mostly Sunny near San Leon.
Stop Ideas Near Leander
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 Leander.
Austin
Taylor
Killeen, Texas
Fort Hood, Texas
Flight Path Map
This map shows the direct air route between Sweetwater and San Leon. Straight-line distance: 384.8 mi (619.27 km).
#1 Sweetwater
City in Texas, United States
| Population | 10,535 |
| Coordinates | 32.4709500, -100.4059400 |
| Altitude | 661 |
| Country | United States |
#2 San Leon
Census designated place
| Population | 4,970 |
| Coordinates | 29.4832900, -94.9221500 |
| Altitude | 3 |
| Country | United States |
End: San Leon (-94.92215, 29.48329)
Estimated Travel Time
Distance: 728 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 04m |
| 40 mph (64.37 km/h) | 11h 18m |
| 50 mph (80.47 km/h) | 09h 02m |
| 60 mph (96.56 km/h) | 07h 32m |
| 70 mph (112.65 km/h) | 06h 27m |
| 80 mph (129 km/h) | 05h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.45 | $55.06 | $110.12 |
| Mid-grade | $3.95 | $63.09 | $126.18 |
| Premium | $4.33 | $69.14 | $138.28 |
| Diesel | $5.57 | $88.83 | $177.67 |
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 · Nov 11, 2026