How far is Nassau Bay, TX from San Antonio, TX?
The driving distance from Nassau Bay, TX to San Antonio, TX is about 226.9 miles (365.2 km), with a travel time of about 03h 35m by car.
- The straight-line flight distance is about 204.8 miles (329.6 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 Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers then Mostly Cloudy
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Nassau Bay and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Nassau Bay and San Antonio.
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1
Start on the route
4 m · 3 sec
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2
Turn right onto San Sebastian Lane
145 m · 25 sec · San Sebastian Lane
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3
Turn right onto Point Lookout Drive
2469 ft · 2 min · Point Lookout Drive
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4
Turn left onto East NASA Parkway
2203 ft · 44 sec · East NASA Parkway
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5
Continue on NASA Bypass
2300 ft · 33 sec · NASA Bypass
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6
Take the exit slight right toward Sarah Deel Drive, NASA Parkway
656 ft · 16 sec
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7
Turn straight onto East NASA Parkway
1 km · 1 min · East NASA Parkway
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8
Continue on NASA Parkway
1.5 km · 2 min · NASA Parkway
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9
Turn slight right
52 m · 6 sec
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10
Turn slight right onto Gulf Freeway Frontage Road
2964 ft · 59 sec · Gulf Freeway Frontage Road
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11
Take the ramp slight left toward I 45 North
1158 ft · 28 sec
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12
Merge slight left onto Gulf Freeway
22.3 mi · 26 min · Gulf Freeway
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13
Take the exit slight left toward I 10 West: San Antonio
717 ft · 18 sec
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14
Merge slight left onto Katy Freeway
174.7 mi · 3 hr 2 min · Katy Freeway
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15
Keep slight left
12 mi · 13 min
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16
Keep slight left to continue on 90th Infantry Division Highway
1.2 km · 52 sec · 90th Infantry Division Highway
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17
Continue on Jose Lopez Freeway
1.6 mi · 2 min · Jose Lopez Freeway
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18
Take the exit slight right toward Commerce Street, Houston Street
790 ft · 19 sec
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19
Turn straight onto Interstate 10 East
1830 ft · 39 sec · Interstate 10 East
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20
Turn right onto East Houston Street
963 ft · 20 sec · East Houston Street
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21
Turn slight left onto East Commerce Street
4.3 mi · 7 min · East Commerce Street
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22
Turn left onto Military Plaza
119 m · 16 sec · Military Plaza
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23
Turn left onto Dolorosa Street
100 m · 8 sec · Dolorosa Street
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24
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Nassau Bay and San Antonio.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Katy Freeway
Merge slight left onto Katy Freeway
175 mi · 03h 02m
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 Rain Showers then Mostly Cloudy leaving Nassau Bay and Slight Chance Rain Showers near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Nassau Bay to San Antonio?
The road trip is about 226.9 miles (365.2 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?
Weimar is a useful midpoint, sitting about 110.1 miles from Nassau Bay and 116.8 miles from San Antonio.
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 22.1 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 $30.27 one way or $60.54 round trip. Estimated CO2 is about 71.2 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers then Mostly Cloudy around Nassau Bay and Slight Chance Rain Showers near San Antonio.
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 Nassau Bay and San Antonio. Straight-line distance: 204.81 mi (329.61 km).
#1 Nassau Bay
City in Texas, United States
| Population | 3,907 |
| Coordinates | 29.5446800, -95.0910400 |
| Altitude | 5 |
| Country | United States |
#2 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 |
End: Dolorosa Street (-98.493645, 29.424163)
Estimated Travel Time
Distance: 365 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 33m |
| 40 mph (64.37 km/h) | 05h 40m |
| 50 mph (80.47 km/h) | 04h 32m |
| 60 mph (96.56 km/h) | 03h 46m |
| 70 mph (112.65 km/h) | 03h 14m |
| 80 mph (129 km/h) | 02h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $30.27 | $60.54 |
| Mid-grade | $4.25 | $34.06 | $68.12 |
| Premium | $4.59 | $36.77 | $73.55 |
| Diesel | $3.99 | $31.98 | $63.97 |
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.