How far is San Antonio, TX from Nassau Bay, TX?
The driving distance from San Antonio, TX to Nassau Bay, TX is about 220.4 miles (354.7 km), with a travel time of about 04h 00m by car.
- The straight-line flight distance is about 204.8 miles (329.6 km).
- For a round trip, plan for roughly 08h 00m 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 00m.
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, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Chance Rain Showers then Mostly Cloudy
Driving Route Map
The map below follows the saved road route between San Antonio and Nassau Bay.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Nassau Bay.
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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
151.1 mi · 2 hr 34 min
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13
Take the exit slight left toward I 10 Toll: Katy Tollway
1548 ft · 22 sec
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14
Merge slight left onto Katy Tollway
3.2 mi · 4 min · Katy Tollway
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15
Take the exit slight right
1092 ft · 15 sec
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16
Merge slight right onto Katy Freeway
10.3 mi · 13 min · Katy Freeway
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17
Take the exit slight left toward I 45 South: Galveston
819 ft · 20 sec
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18
Merge slight left onto Gulf Freeway
22.1 mi · 26 min · Gulf Freeway
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19
Take the exit slight right toward FM 528: NASA Parkway
1281 ft · 27 sec
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20
Turn straight onto Gulf Freeway Frontage Road
1.2 km · 1 min · Gulf Freeway Frontage Road
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21
Turn left onto NASA Parkway
1 mi · 2 min · NASA Parkway
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22
Continue on East NASA Parkway
3245 ft · 1 min · East NASA Parkway
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23
Take the ramp slight left toward NASA 1 East
1017 ft · 25 sec
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24
Merge slight left onto NASA Bypass
2150 ft · 31 sec · NASA Bypass
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25
Continue on East NASA Parkway
2104 ft · 42 sec · East NASA Parkway
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26
Turn right onto Point Lookout Drive
1145 ft · 58 sec · Point Lookout Drive
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27
Turn left onto Saxony Lane
141 m · 20 sec · Saxony Lane
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28
Enter the roundabout and take exit 1 toward Vinland Lane
16 m · 5 sec · Vinland Lane
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29
Exit the roundabout onto Vinland Lane
952 ft · 46 sec · Vinland Lane
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30
Turn right onto San Sebastian Lane
77 m · 13 sec · San Sebastian Lane
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31
Turn right
4 m · 1 sec
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32
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between San Antonio and Nassau Bay.
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
151 mi · 02h 34m
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.
Slight Chance Rain Showers leaving San Antonio and Chance Rain Showers then Mostly Cloudy near Nassau Bay.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Nassau Bay?
The road trip is about 220.4 miles (354.7 km) and usually takes 04h 00m 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?
Weimar is a useful midpoint, sitting about 110 miles from San Antonio and 110.4 miles from Nassau Bay.
How much longer is the road route than the straight-line distance?
The direct path is about 204.8 miles (329.6 km), while the road route adds roughly 15.6 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 9:00 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.40 one way or $58.80 round trip. Estimated CO2 is about 69.1 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around San Antonio and Chance Rain Showers then Mostly Cloudy near Nassau Bay.
Stop Ideas Near Weimar
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 Weimar.
Prairie View, TX
Austin
San Marcos Station
Taylor
Flight Path Map
This map shows the direct air route between San Antonio and Nassau Bay. Straight-line distance: 204.81 mi (329.61 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 Nassau Bay
City in Texas, United States
| Population | 3,907 |
| Coordinates | 29.5446800, -95.0910400 |
| Altitude | 5 |
| Country | United States |
End: Nassau Bay (-95.09104, 29.54468)
Estimated Travel Time
Distance: 355 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 20m |
| 40 mph (64.37 km/h) | 05h 30m |
| 50 mph (80.47 km/h) | 04h 24m |
| 60 mph (96.56 km/h) | 03h 40m |
| 70 mph (112.65 km/h) | 03h 08m |
| 80 mph (129 km/h) | 02h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $29.40 | $58.80 |
| Mid-grade | $4.25 | $33.08 | $66.16 |
| Premium | $4.59 | $35.72 | $71.44 |
| Diesel | $3.99 | $31.07 | $62.13 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.