Traveling from Aransas Pass to San Antonio covers 155.1 miles and typically takes about 2 hours and 25 minutes. Because this is a relatively short trip, it works perfectly as a straightforward day trip, allowing you to reach your destination without needing an overnight stay. You should budget approximately $23 for fuel to complete the journey. The entire route remains within the Great Plains region of Texas, ensuring a consistent landscape as you move inland. Whether you are heading out for business or a quick getaway, the simplicity of this drive makes it a manageable trek for any driver.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
77.5 miles from Aransas Pass, TX
A natural place for your longest stop of the day
, about 1h 31m into the drive
.
Main Roads
Road
Distance
Duration
I 37
110 mi
1h 51m
TX 188
15 mi
19m
US Highway 181
11.3 mi
12m
State Highway 35 Bypass
5.9 mi
6m
State Highway 89
2.7 mi
3m
West Wheeler Avenue
1.9 mi
3m
Spur 202
1.5 mi
2m
Railroad Avenue
1.3 mi
1m
Longest stretch:
I 37
— 110 mi, about 1h 51m
Turn-by-Turn Driving Directions
Step-by-step road directions between Aransas Pass, TX and San Antonio, TX.
1
Start on Loop 90
196 ft·3 sec·Harrison Boulevard
2
Continue on TX 35 Bus
1.9 mi·3 min·West Wheeler Avenue
3
Turn right onto FM 1069
0.2 mi·29 sec·FM 1069 North
4
Take the ramp
0.4 mi·1 min
5
Merge onto TX 35
5.9 mi·6 min·State Highway 35 Bypass
6
Take the exit
0.4 mi·48 sec
Toward US 181, TX 361, North
7
Keep slight right at fork
0.2 mi·24 sec
8
Turn straight onto Spur 202
1.5 mi·2 min·Spur 202
9
Take the ramp
0.4 mi·51 sec
10
Merge onto US 181
5.3 mi·6 min·US Highway 181
11
Continue on US 181; FM 631
1.3 mi·1 min·Railroad Avenue
12
Continue on US 181
6.0 mi·6 min·US Highway 181
13
Continue on TX 89
2.7 mi·3 min·State Highway 89
14
Take the exit
0.3 mi·42 sec
15
Merge onto US 77
1.2 mi·1 min·US 77
16
Take the exit
0.4 mi·1 min
Toward Texas 188: Sinton
17
Turn right onto TX 188
15 mi·19 min·TX 188
18
Turn right onto I-37 Access Road
0.2 mi·22 sec·I-37 Access Road
19
Take the ramp
0.2 mi·22 sec
20
Merge onto I 37
110 mi·1 hr 51 min·I 37
Use the straight / slight right lanes.
21
Take the exit
0.3 mi·33 sec
Exit 141Toward Commerce Street, Downtown, The AlamoUse the straight / slight right lanes.
22
Turn straight onto Interstate 37 South
380 ft·11 sec·Interstate 37 South
23
Turn left onto East Commerce Street
0.9 mi·1 min·East Commerce Street
24
Turn left onto Military Plaza
392 ft·15 sec·Military Plaza
25
Turn left onto Dolorosa Street
327 ft·8 sec·Dolorosa Street
26
Arrive at destination
Dolorosa Street
Trip Plan
Since this 155.1-mile drive is quite short, you have plenty of flexibility regarding your departure time. You can easily complete the trip in one day, so there is no pressure to split the journey into multiple segments. Because there are no mandatory stops built into the itinerary, you are free to pull over whenever you need a break or a quick meal. Be mindful that this is a turn-heavy route, so keep your GPS ready to guide you through the transition from West Wheeler Avenue to FM 1069 North. Staying alert during these frequent road changes will ensure a smooth trip to San Antonio.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 77.5 miles from Aransas Pass, TX, or about 1h 31m into the drive.
The longest continuous stretch on this route runs about 110 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 34 miles or 44m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 77.5 miles or 1h 31m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 22m
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 Aransas Pass, 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 Aransas Pass, TX
This is one driving day of about 155.1 miles and 2h 51m.
Your first comfortable stop window is around 34 miles from Aransas Pass, 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 I 37 for about 110 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 16
5 decision points cluster between mile 2 and 155 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
2 mi into trip|~3m in|FM 1069 / FM 1069 North
Turn right onto FM 1069 / FM 1069 North
Navigation decision point
5
8.5 mi into trip|~11m in
Take the exit toward US 181, TX 361, North
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 181, TX 361, North
5
43.7 mi into trip|~57m in|I 37
Merge onto I 37
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
8
153.7 mi into trip|~2h 48m in
Take the exit toward Commerce Street, Downtown, The Alamo
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 141
Toward Commerce Street, Downtown, The Alamo
5
155 mi into trip|~2h 51m in|Dolorosa Street
Turn left onto Dolorosa Street
Navigation decision point
Fuel & Cost
Regular Gas
$23.44 one way
$46.87 round trip
$3.84/gal25.4 MPG avg54 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$25.65
$51.31
premium
$4.54
$27.69
$55.38
diesel
$5.61
$34.24
$68.49
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$23
Meals
$25–$50
Total
$48–$73
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 54.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $16 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
46.5
0
$16.29
$7.44
Efficient EV
38.8
0
$13.57
$6.20
EV Truck/SUV
62
0
$21.71
$9.93
Gas CO2
54 kg
EV CO2
18 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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
Aransas Pass, TX
Late night
in Aransas Pass on Sunday
Local time
3:06 AM
CDT
Current temp
79°F
Unavailable
Live forecast
Destination
San Antonio, TX
Late night
in San Antonio on Sunday
Local time
3:06 AM
CDT
Current temp
90°F
Partly Sunny
SSE 10 mph0% 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
11 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
2h 51m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
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...
2 mi from route
~4 min detour
Free
near mile 144.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a monotonous interstate cruise on this journey. You will navigate a series of local roads, starting with West Wheeler Avenue and transitioning through FM 1069 North before utilizing Highway 35. With a 0% highway share, you won't find yourself locked into long, uninterrupted stretches; in fact, the longest stretch on West Wheeler Avenue is 0 miles. This route demands your full attention as you navigate the local infrastructure. Prepare for a hands-on driving experience that prioritizes local navigation over high-speed highway travel.
95% highway — fuel and pacing are the main things to plan.
26 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 110 mi on I 37.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 37 and TX 188. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 2 miles in near FM 1069 / FM 1069 North.
Driving Effort7/10
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 155.1 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 2 miles (FM 1069 / FM 1069 North): Navigation decision point; at 8.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 43.7 miles (I 37): Merge point - match speed before joining. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
649 ft15 ft
Total Climb
634 ft
Total Descent
0 ft
Highest Point
649 ft
~155.1 mi in
Elevation Range
634 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Aransas Pass, TX to San Antonio, TX, road signs begin pointing toward Texas 188: Sinton along the way.
San Antonio is the second largest city in the state of Texas and the 7th largest in the United States. It's the 24th largest metropolitan area in the country. Visited by more than 31 million annual visitors, San Antonio is a beautiful city at the axis of three different geological terrains: Hill Country, South Texas Plains and Prairie and Lakes. There's a lot to do in this city: fine art museums, historical missions and plenty of amusement parks in addition to great dining and lots of drinking. The culture and people are vibrant and interesting. San Antonio's downtown is one of the most lively in the nation.
Top landmarks
•Alamo Mission in San Antonio — historic place in San Antonio, Bexar County, Texas
•San Antonio Missions National Historical Park — historic district in San Antonio, Bexar County, Texas
•Fort Sam Houston — military base in San Antonio, Texas
Doable as a same-day drive at 2h 51m. Total distance: 155.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 51m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (95%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 110 miles on I 37. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at San Antonio, TX before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 2 miles (FM 1069 / FM 1069 North): Navigation decision point; at 8.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 43.7 miles (I 37): Merge point - match speed before joining. Lane positioning matters here.
Yes — San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at San Antonio, TX before heading back.
