Traveling from Nassau Bay to San Antonio covers a distance of 226.9 miles, typically taking about 3 hours and 35 minutes of drive time. Because this is a relatively straightforward trip, it functions perfectly as a single-day excursion without the need for an overnight stop. You should budget approximately $34 for fuel to complete the journey. Both cities sit within the Great Plains region, ensuring a consistent geographic feel as you transition across Texas. Since there are no required stops, you have the flexibility to power through or take breaks at your own pace. Ultimately, this is a practical route for those looking to reach the heart of San Antonio efficiently.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
110.3 miles from Nassau Bay, TX
A natural place for your longest stop of the day
, about 2h 1m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h. Total distance: 220.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (97%). Some complex stretches to watch for.
Drive Character
Expect a turn-heavy local drive rather than a monotonous interstate cruise on this trek. With a highway share of 0%, you will spend your time navigating local roads that demand more active attention than a typical highway sprint. The road’s personality is defined by these technical stretches, which provide a different pace compared to major thoroughfares. Because the route consists entirely of local paths, you will find it requires a more hands-on driving approach throughout the entire 226.9-mile distance. Stay alert, as the winding nature of these local roads makes for a dynamic experience behind the wheel.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 24 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Katy Freeway is the longest continuous segment at about 174.7 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Katy Freeway and Gulf Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.4 miles in.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 16 significant decision points across 220.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 1.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 26.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 201 miles (I 10; US 90; TX 130): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 16 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
7
1.4 mi into trip|~3m in
Take the exit toward Sarah Deel Drive, NASA Parkway
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward Sarah Deel Drive, NASA Parkway
7
26.2 mi into trip|~34m in
Take the exit toward I 10 West: San Antonio
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left / straight lanes.
Exit 48B
Toward I 10 West: San Antonio
6
201 mi into trip|~3h 35m in|I 10; US 90; TX 130
Keep slight left at fork onto I 10; US 90; TX 130
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
213.1 mi into trip|~3h 48m in|I 10; US 90; TX 130 / 90th Infantry Division Highway
Keep slight left at fork onto I 10; US 90; TX 130 / 90th Infantry Division Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
215.4 mi into trip|~3h 51m in
Take the exit toward Commerce Street, Houston Street
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 579
Toward Commerce Street, Houston Street
Main Roads
Road
Distance
Duration
Katy Freeway
174.7 mi
3h 1m
Gulf Freeway
22.3 mi
25m
I 10
12 mi
12m
East Commerce Street
4.3 mi
7m
Jose Lopez Freeway
1.6 mi
1m
East NASA Parkway
1 mi
1m
NASA Parkway
0.9 mi
1m
90th Infantry Division Highway
0.8 mi
<1m
Longest stretch:
Katy Freeway
— 174.7 mi, about 3h 1m
Turn-by-Turn Driving Directions
Step-by-step road directions between Nassau Bay, TX and San Antonio, TX.
1
Start on this road
14 ft·3 sec·this road
2
Turn right onto San Sebastian Lane
476 ft·25 sec·San Sebastian Lane
3
Turn right onto Point Lookout Drive
0.5 mi·1 min·Point Lookout Drive
4
Turn left onto NASA 1
0.4 mi·43 sec·East NASA Parkway
5
Continue on NASA 1
0.4 mi·33 sec·NASA Bypass
Use the straight / slight right lanes.
6
Take the exit
0.1 mi·16 sec
Toward Sarah Deel Drive, NASA ParkwayUse the slight right lane.
7
Turn straight onto East NASA Parkway
0.6 mi·1 min·East NASA Parkway
Use the left lane.
8
Continue on NASA Parkway
0.9 mi·1 min·NASA Parkway
9
Turn slight right
171 ft·6 sec
Use the right lane.
10
Turn slight right onto Gulf Freeway Frontage Road
0.6 mi·59 sec·Gulf Freeway Frontage Road
11
Take the ramp
0.2 mi·28 sec
Toward I 45 North
12
Merge onto I 45
22 mi·25 min·Gulf Freeway
Use the straight / slight right lanes.
13
Take the exit
0.1 mi·17 sec
Exit 48BToward I 10 West: San AntonioUse the slight left / straight lanes.
14
Merge onto I 10; US 90
175 mi·3 hr 1 min·Katy Freeway
Use the straight / slight right lanes.
15
Keep slight left at fork onto I 10; US 90; TX 130
12 mi·12 min·I 10; US 90; TX 130
Use the straight / slight right lanes.
16
Keep slight left at fork onto I 10; US 90; TX 130
0.8 mi·51 sec·90th Infantry Division Highway
Use the straight / slight right lanes.
17
Continue on I 10; US 90
1.6 mi·1 min·Jose Lopez Freeway
Use the straight / slight right lanes.
18
Take the exit
0.1 mi·19 sec
Exit 579Toward Commerce Street, Houston StreetUse the straight / slight right lanes.
19
Turn straight onto Interstate 10 East
0.3 mi·38 sec·Interstate 10 East
20
Turn right onto East Houston Street
0.2 mi·20 sec·East Houston Street
21
Turn slight left onto East Commerce Street
4.3 mi·7 min·East Commerce Street
22
Turn left onto Military Plaza
392 ft·15 sec·Military Plaza
23
Turn left onto Dolorosa Street
327 ft·8 sec·Dolorosa Street
24
Arrive at destination
Dolorosa Street
Trip Plan
To make the most of your 3-hour and 35-minute drive, try to depart early in the morning to avoid local traffic congestion. Since this is a direct route with no mandatory stops, you have the luxury of choosing your own rest points whenever you need to stretch your legs. Keep your fuel budget of $34 in mind and consider filling up before you leave Nassau Bay to avoid searching for stations along the more rural or local sections of the path. Because the road is turn-heavy, prioritize keeping your focus on the changing road conditions rather than solely on your navigation system. This flexibility allows you to manage your own timeline effectively throughout the day.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 110.3 miles from Nassau Bay, TX, or about 2h 1m into the drive.
The longest continuous stretch on this route runs about 174.7 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 49 miles or 57m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 110.3 miles or 2h 1m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 14m
Traffic, exits, and arrival timing usually matter more near San Antonio, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Nassau Bay, TX so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Nassau Bay, TX
This is one driving day of about 220.5 miles and 4h.
Your first comfortable stop window is around 49 miles from Nassau Bay, TX.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Katy Freeway for about 174.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 110.3 mi from Nassau Bay, TX
· 2h 1m into the drive
The midpoint is around 110.3 miles from Nassau Bay, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Katy Freeway if your tank is already low. That segment runs about 174.7 miles.
Arriving in San Antonio, TX
The final approach into San Antonio, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around San Antonio, TX.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
National Parks Near This Route
Worth a detour if your schedule allows.
San Antonio Missions National Historical Park
National Historical Park
Welcome to San Antonio Missions, a National Park Service site and the only UNESCO World Heritage Site in Texas. Each mission in the park is a center of community and has been since the early 1700s. Th...
9 mi from route
~22 min detour
Free
near mile 220.5
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$33.32 one way
$66.64 round trip
$3.84/gal25.4 MPG avg77 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$36.47
$72.94
premium
$4.54
$39.37
$78.74
diesel
$5.61
$48.68
$97.37
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$33
Meals
$25–$50
Total
$58–$83
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 77.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $23 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
66.1
0
$23.15
$10.58
Efficient EV
55.1
0
$19.29
$8.82
EV Truck/SUV
88.2
1
$30.87
$14.11
Gas CO2
77 kg
EV CO2
26 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 16, 2026
Origin
Nassau Bay, TX
Late night
in Nassau Bay on Friday
Local time
2:55 AM
CDT
Current temp
75°F
Unavailable
Live forecast
Destination
San Antonio, TX
Late night
in San Antonio on Friday
Local time
2:55 AM
CDT
Current temp
90°F
Partly Sunny
SSE 10 mph2% chanceLive forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
15 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Nassau Bay, TX to San Antonio, TX covers 220.5 miles and takes about 4h without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Katy Freeway, Gulf Freeway, I 10. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 110.3 miles from Nassau Bay, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $33.32 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 16 significant decision points across 220.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 1.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 26.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 201 miles (I 10; US 90; TX 130): Highway fork - watch signs carefully. Lane positioning matters here.
The route from Nassau Bay, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.
Yes. Nearby national parks include San Antonio Missions National Historical Park.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from
OSRM
over
OpenStreetMap.
Fuel cost uses
EIA
weekly regional averages.
National park proximity is from the
NPS API.
Pages are published only after passing our data-quality checks; our
methodology page
documents refresh cadence, editorial standards, and known limitations.
