Fort Worth to San Antonio is 264.5 miles and takes about 4h 43m via I 35, with a fuel budget near $40 and enough daylight to finish in a day. This trip primarily follows major highways as you travel south through Texas, moving from the Great Plains region. It's a straightforward drive, ideal if you're looking for a direct connection between these two Texas cities without much fuss. Given its manageable length and focus on interstate travel, this route is well-suited for a single-day journey, allowing you to reach your destination 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
132.2 miles from Fort Worth, TX
A natural place for your longest stop of the day
, about 2h 17m into the drive
.
Step-by-step road directions between Fort Worth, TX and San Antonio, TX.
1
Start on South Freeway
174 ft·3 sec·South Freeway
2
Take the ramp
0.3 mi·33 sec
Toward I 35W SouthUse the straight / slight left lanes.
3
Merge onto I 35W
82 mi·1 hr 25 min·South Freeway
Use the straight / slight right lanes.
4
Continue on I 35; US 77
6.6 mi·7 min·North Jack Kultgen Expressway
Use the straight / slight right lanes.
5
Continue on I 35
38 mi·39 min·Purple Heart Trail
Use the straight / slight right lanes.
6
Keep slight left at fork onto I 35
56 mi·58 min·I 35
Use the straight / slight right lanes.
7
Keep slight left at fork onto I 35; US 290
50 mi·54 min·Purple Heart Trail
Toward 32nd Street, Dean Keeton StreetUse the slight left lane.
8
Continue on I 35
1.7 mi·1 min·Interstate Highway 35
Use the straight / slight right lanes.
9
Continue on I 35
12 mi·12 min·Purple Heart Trail
Use the straight / slight right lanes.
10
Continue on I 35
10.0 mi·11 min·North Pan Am Expressway
Use the straight / slight right lanes.
11
Keep slight left at fork onto I 35
6.4 mi·8 min·North Pan Am Expressway
Toward I 35 SouthUse the straight / slight right lanes.
12
Keep slight left at fork onto I 35
0.6 mi·41 sec·North Pan Am Expressway
Toward I 35 South: Lower Level, LaredoUse the slight left lane.
13
Take the exit
0.1 mi·16 sec
Exit 157AToward Lexington Avenue, Main Avenue, San Pedro AvenueUse the slight right lane.
14
Turn straight onto East Elmira Street
526 ft·17 sec·East Elmira Street
Use the left / straight lanes.
15
Turn left onto North Main Avenue
0.2 mi·18 sec·North Main Avenue
Use the left / straight lanes.
16
Enter roundabout onto Navarro Street
159 ft·3 sec·Navarro Street
17
Continue on Navarro Street
111 ft·2 sec·Navarro Street
18
Keep slight right at fork onto North Main Avenue
0.4 mi·51 sec·North Main Avenue
Use the slight left / slight right lanes.
19
Turn right onto West Travis Street
222 ft·10 sec·West Travis Street
20
Turn left onto North Flores Street
0.2 mi·20 sec·North Flores Street
21
Continue on Military Plaza
392 ft·15 sec·Military Plaza
22
Turn left onto Dolorosa Street
327 ft·8 sec·Dolorosa Street
23
Arrive at destination
Dolorosa Street
Trip Plan
To make the most of this 4h 43m drive, consider departing Fort Worth in the morning to avoid heavier traffic, especially as you approach San Antonio. With only one recommended stop and a fuel cost estimated around $40, this route offers flexibility. You can easily complete it in a single day, but if you prefer a more relaxed pace, breaking it up is an option. Keep an eye on your fuel gauge, particularly during the longest stretch of 99.6 miles, as services can sometimes be spaced out on these major Texas highways.
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 132.2 miles from Fort Worth, TX, or about 2h 17m into the drive.
The longest continuous stretch on this route runs about 99.6 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 58 miles or 1h in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 132.2 miles or 2h 17m 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 48m
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 Fort Worth, 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 Fort Worth, TX
This is one driving day of about 264.5 miles and 4h 43m.
Your first comfortable stop window is around 58 miles from Fort Worth, 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 Purple Heart Trail for about 99.6 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 14
5 decision points cluster between mile 0 and 263.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0 mi into trip|~0m in
Take the ramp toward I 35W South
Lane positioning matters here
Use the straight / slight left lanes.
Toward I 35W South
8
182.9 mi into trip|~3h 11m in|I 35; US 290 / Purple Heart Trail
Keep slight left at fork onto I 35; US 290 / Purple Heart Trail toward 32nd Street, Dean Keeton Street
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward 32nd Street, Dean Keeton Street
7
256.4 mi into trip|~4h 32m in|I 35 / North Pan Am Expressway
Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 35 South
8
262.8 mi into trip|~4h 40m in|I 35 / North Pan Am Expressway
Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South: Lower Level, Laredo
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward I 35 South: Lower Level, Laredo
8
263.3 mi into trip|~4h 41m in
Take the exit toward Lexington Avenue, Main Avenue, San Pedro Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 157A
Toward Lexington Avenue, Main Avenue, San Pedro...
Fuel & Cost
Regular Gas
$39.97 one way
$79.93 round trip
$3.84/gal25.4 MPG avg93 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$43.75
$87.49
premium
$4.54
$47.22
$94.45
diesel
$5.61
$58.40
$116.80
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$40
Meals
$25–$50
Total
$65–$90
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 92.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $28 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
79.4
0
$27.77
$12.70
Efficient EV
66.1
0
$23.14
$10.58
EV Truck/SUV
105.8
1
$37.03
$16.93
Gas CO2
93 kg
EV CO2
31 kg (67% 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 19, 2026
Origin
Fort Worth, TX
Afternoon
in Fort Worth on Sunday
Local time
4:54 PM
CDT
Current temp
62°F
Unavailable
Live forecast
Destination
San Antonio, TX
Afternoon
in San Antonio on Sunday
Local time
4:54 PM
CDT
Current temp
70°F
Unavailable
Live 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
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 43m 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.
Waco Mammoth National Monument
National Monument
Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...
4 mi from route
~10 min detour
Free
near mile 88.1
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?
This drive is largely highway-focused, with 62% of the journey utilizing major interstates like I 35. You'll encounter stretches that are pure highway cruising, including one segment of 99.6 miles on the Purple Heart Trail. Expect a consistent pace, with the majority of your time spent on well-maintained freeways designed for efficient travel. While not characterized by winding backroads, the substantial highway share ensures a predictable and relatively swift transit between Fort Worth and San Antonio.
62% highway — fuel and pacing are the main things to plan.
23 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 99.6 mi on Purple Heart Trail.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on Purple Heart Trail and South Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive.
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 14 significant decision points across 264.5 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: near the start: Lane positioning matters here; at 182.9 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 256.4 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Fort Worth is a city in the Prairies and Lakes region of Texas. With a population of approximately 1,020,000, it is Texas' 5th largest city. It is part of the Dallas-Fort Worth Metroplex, which has a population exceeding 6 million. Sometimes referred to as Cowtown, it is by far closer to its cowboy roots than neighboring Dallas. This article also covers North Richland Hills, a neighboring community.
Top landmarks
•Amon Carter Museum of American Art — art museum in Fort Worth, Texas
•Modern Art Museum of Fort Worth — art museum
•St. Patrick Cathedral in Fort Worth — church located in Fort Worth, Texas
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 43m. Total distance: 264.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 43m drive, comfortable solo distance.
Frequently Asked Questions
The longest stretch is about 99.6 miles on Purple Heart Trail. 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 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: near the start: Lane positioning matters here; at 182.9 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 256.4 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Waco Mammoth National Monument and San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.7 hours each way, an in-and-out day trip would put you behind the wheel for 9.5 hours — manageable with a long break at San Antonio, TX, but most travelers stay overnight.
