This 238.4-mile journey from San Antonio, TX to Alton, TX is a feasible one-day trip, estimated to take about 4 hours and 21 minutes of driving time. With a fuel cost estimated at $36, it's an economical option for exploring the Great Plains region of Texas. The route primarily utilizes local roads, indicated by its 'turn-heavy local drive' profile and 0% highway share, meaning you'll be navigating city streets for much of the way. This isn't a high-speed dash but rather a more involved drive that requires attention to traffic and turns. Given the duration and nature of the drive, it's best tackled in a single day.
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
119.2 miles from San Antonio, TX
A natural place for your longest stop of the day
, about 2h 8m into the drive
.
Step-by-step road directions between San Antonio, TX and Alton, TX.
1
Start on Dolorosa Street
143 ft·4 sec·Dolorosa Street
2
Continue on West Market Street
0.4 mi·42 sec·West Market Street
3
Continue on East Market Street
0.4 mi·40 sec·East Market Street
4
Turn right onto Tower of the Americas Way
0.2 mi·21 sec·Tower of the Americas Way
Use the right lane.
5
Take the ramp
0.3 mi·33 sec
Toward I 37 South, US 281 South
6
Merge onto I 37; US 281
1.4 mi·1 min·William J Bordelon Freeway
7
Continue on I 37; US 281
67 mi·1 hr 8 min·Lucian Adams Freeway
Use the straight / slight right lanes.
8
Take the exit onto US 281 South
15 mi·19 min·US 281 South
Toward US 281 SouthUse the straight / slight right lanes.
9
Keep slight left at fork onto US 281
66 mi·1 hr 10 min·South Nueces Street
10
Keep slight left at fork onto I 69C; US 281
9.5 mi·10 min·I 69C; US 281
11
Keep slight left at fork onto I 69C; US 281
56 mi·58 min·Falfurrias Expressway
Use the straight / right lanes.
12
Keep slight left at fork onto I 69C; US 281
7.2 mi·7 min·I 69C; US 281
Use the straight / slight right lanes.
13
Take the exit
0.3 mi·23 sec
Exit 10Toward US 281 Business South: EdinburgUse the slight right lane.
14
Continue on North Expressway 281
0.4 mi·38 sec·North Expressway 281
15
Continue on US 281 Business
3.0 mi·4 min·US 281 Business
16
Turn right onto US 281 Business; TX 107
377 ft·13 sec·West McIntyre Street
17
Turn left onto US 281 Business; TX 107
360 ft·10 sec·North 10th Avenue
Use the left / right lanes.
18
Turn right onto TX 107
9.1 mi·13 min·West University Drive
19
Turn left onto TX 107
2.0 mi·3 min·Conway Street
20
Turn left onto FM 676
102 ft·2 sec·Main Avenue
21
Arrive at destination
FM 676
Trip Plan
To make the most of this 4-hour, 21-minute drive, consider an early morning departure from San Antonio to avoid heavier local traffic. Since this is a 238.4-mile trip primarily on local roads, plan for at least one stop to stretch your legs and refuel, especially since there's no defined 'longest stretch' to break up the journey. The estimated fuel cost is $36, so ensure your tank is full before you leave. Keep an eye on your GPS as you navigate the many turns on roads like West Market Street and East Market Street, as this route is characterized by its frequent changes in direction.
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 119.2 miles from San Antonio, TX, or about 2h 8m into the drive.
The longest continuous stretch on this route runs about 66.8 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 52 miles or 54m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 119.2 miles or 2h 8m 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 29m
Traffic, exits, and arrival timing usually matter more near Alton, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving San Antonio, 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 San Antonio, TX
This is one driving day of about 238.4 miles and 4h 21m.
Your first comfortable stop window is around 52 miles from San Antonio, 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 Lucian Adams Freeway for about 66.8 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 13
5 decision points cluster between mile 69.5 and 227.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
69.5 mi into trip|~1h 12m in|US 281 South
Take the exit onto US 281 South toward US 281 South
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Toward US 281 South
6
160.4 mi into trip|~2h 52m in|I 69C; US 281 / Falfurrias Expressway
Keep slight left at fork onto I 69C; US 281 / Falfurrias Expressway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / right lanes.
6
216.2 mi into trip|~3h 51m in|I 69C; US 281
Keep slight left at fork onto I 69C; US 281
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
7
223.4 mi into trip|~3h 58m in
Take the exit toward US 281 Business South: Edinburg
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 10
Toward US 281 Business South: Edinburg
7
227.2 mi into trip|~4h 4m in|US 281 Business; TX 107 / North 10th Avenue
Turn left onto US 281 Business; TX 107 / North 10th Avenue
Lane positioning matters here
Use the left / right lanes.
Fuel & Cost
Regular Gas
$36.02 one way
$72.05 round trip
$3.84/gal25.4 MPG avg83 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$39.43
$78.86
premium
$4.54
$42.56
$85.13
diesel
$5.61
$52.64
$105.27
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$36
Meals
$25–$50
Total
$61–$86
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 83.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $25 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
71.5
0
$25.03
$11.44
Efficient EV
59.6
0
$20.86
$9.54
EV Truck/SUV
95.4
1
$33.38
$15.26
Gas CO2
83 kg
EV CO2
28 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 21, 2026
Origin
San Antonio, TX
Morning
in San Antonio on Tuesday
Local time
6:09 AM
CDT
Current temp
60°F
Showers And Thunderstorms
E 5 mph76% chanceLive forecast
Fire Weather Watch
Fire Weather Watch issued April 20 at 11:56PM CDT until April 22 at 9:00PM CDT by NWS Amarillo TX
Fire Weather Watch
Fire Weather Watch issued April 20 at 11:56PM CDT until April 22 at 9:00PM CDT by NWS Amarillo TX
Destination
Alton, TX
Morning
in Alton on Tuesday
Local time
6:09 AM
CDT
Current temp
68°F
Slight Chance Rain Showers
SE 6 mph23% chanceLive forecast
Fire Weather Watch
Fire Weather Watch issued April 20 at 11:56PM CDT until April 22 at 9:00PM CDT by NWS Amarillo TX
Fire Weather Watch
Fire Weather Watch issued April 20 at 11:56PM CDT until April 22 at 9:00PM CDT by NWS Amarillo TX
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
8 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 21m 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.
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...
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' for this entire 238.4-mile stretch, as the highway share is 0%. This means you'll be on city streets like West Market Street and East Market Street for the bulk of your travel, with frequent intersections and traffic signals. There's no single 'longest stretch' of uninterrupted highway to speak of, so be prepared for a more engaging driving experience that demands constant attention. The profile suggests a route that winds through communities rather than bypassing them on faster roads, offering a more ground-level perspective of the Texas landscape.
67% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 66.8 mi on Lucian Adams Freeway.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on Lucian Adams Freeway and South Nueces Street. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 69.5 miles in near US 281 South.
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 13 significant decision points across 238.4 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 69.5 miles (US 281 South): Exit ramp - move to the correct lane early. Lane positioning matters here; at 160.4 miles (I 69C; US 281 / Falfurrias Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 216.2 miles (I 69C; US 281): Highway fork - watch signs carefully. Lane positioning matters here.
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 4h 21m. Total distance: 238.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 21m drive, comfortable solo distance.
Frequently Asked Questions
The longest stretch is about 66.8 miles on Lucian Adams Freeway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Alton, 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 69.5 miles (US 281 South): Exit ramp - move to the correct lane early. Lane positioning matters here; at 160.4 miles (I 69C; US 281 / Falfurrias Expressway): Highway fork - watch signs carefully. Lane positioning matters here; at 216.2 miles (I 69C; US 281): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.4 hours each way, an in-and-out day trip would put you behind the wheel for 8.7 hours — manageable with a long break at Alton, TX, but most travelers stay overnight.
