Seymour, TX to San Antonio, TX is 358.5 miles and takes about 6h 26m via US 83, US 183, and I 10, with a fuel budget near $54 and enough daylight to finish in a day. This drive takes you from the rolling landscapes of the Great Plains in North Texas down into the same region as you approach Central Texas. It's a straightforward, highway-focused trip, ideal if you're looking for a direct path with minimal fuss. You'll spend a good portion of your time on major highways, making it a solid choice for a single-day journey, especially if you're comfortable with about two-thirds of the drive being on interstates or major US highways.
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
179.2 miles from Seymour, TX
A natural place for your longest stop of the day
, about 3h 20m into the drive
.
Main Roads
Road
Distance
Duration
US 83
87.3 mi
1h 31m
US 183
74.4 mi
1h 23m
I 10
71.7 mi
1h 14m
Grassmeyer Street
41.9 mi
44m
Commercial Avenue
32.5 mi
35m
Ellis Street
29.4 mi
31m
South 7th Street
16.5 mi
18m
McDermott Freeway
1.7 mi
2m
Longest stretch:
US 83
— 87.3 mi, about 1h 31m
Turn-by-Turn Driving Directions
Step-by-step road directions between Seymour, TX and San Antonio, TX.
1
Start on US 183 Business; US 277 Business; US 283 Business; TX 114
1.0 mi·1 min·North Main Street
2
Take the ramp
0.4 mi·49 sec
Toward US 183 South, US 277 South, US 283 South: Abilene
3
Continue on US 183; US 277; US 283
74 mi·1 hr 23 min·US 183; US 277; US 283
4
Continue on US 83; US 277
0.1 mi·7 sec·West Court Plaza
5
Turn slight right onto US 83; US 277
32 mi·35 min·Commercial Avenue
6
Continue on US 83; US 84
7.8 mi·8 min·US 83; US 84
7
Continue on US 83
39 mi·44 min·US 83
8
Turn left onto US 83
17 mi·18 min·South 7th Street
Use the left lane.
9
Continue on US 83
42 mi·44 min·Grassmeyer Street
10
Continue on US 83
29 mi·31 min·Ellis Street
11
Take the exit onto US 83
40 mi·38 min·US 83
Toward I 10 East: San AntonioUse the left lane.
12
Continue on I 10
54 mi·54 min·I 10
Use the straight / slight right lanes.
13
Keep slight right at fork onto I 10; US 87
17 mi·19 min·I 10; US 87
Use the straight / slight right lanes.
14
Keep slight right at fork onto I 10; US 87
1.7 mi·2 min·McDermott Freeway
15
Take the exit
0.5 mi·1 min
Exit 569CToward Santa Rosa Street, DowntownUse the slight right lane.
16
Turn straight onto North Pecos-La Trinidad
0.2 mi·16 sec·North Pecos-La Trinidad
17
Keep slight right at fork onto North Pecos-La Trinidad
0.6 mi·1 min·North Pecos-La Trinidad
Use the straight lane.
18
Turn left onto Dolorosa Street
0.5 mi·55 sec·Dolorosa Street
Use the straight / left lanes.
19
Arrive at destination
Dolorosa Street
Trip Plan
Starting your drive from Seymour, TX early in the morning will give you ample daylight to reach San Antonio, TX. Since this is a 1-day trip, you have flexibility, but consider an early departure to make the most of it. The longest stretch without a major town is 87.3 miles on US 83, so ensure you have sufficient fuel before entering that segment. With a total duration of around 6 hours and 26 minutes, you can comfortably complete the 358.5-mile drive in one go. Keep an eye on your fuel gauge, especially before heading into longer stretches, as fuel stops might be less frequent on certain highway segments.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 179.2 miles from Seymour, TX, or about 3h 20m into the drive.
The longest continuous stretch on this route runs about 87.3 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 79 miles or 1h 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 179.2 miles or 3h 20m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 21m
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 Seymour, 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 Seymour, TX
This is one driving day of about 358.5 miles and 6h 26m.
Your first comfortable stop window is around 79 miles from Seymour, 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 US 83 for about 87.3 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 8
5 decision points cluster between mile 155.7 and 357.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
155.7 mi into trip|~2h 54m in|US 83 / South 7th Street
Turn left onto US 83 / South 7th Street
Lane positioning matters here
Use the left lane.
8
243.5 mi into trip|~4h 28m in|US 83
Take the exit onto US 83 toward I 10 East: San Antonio
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the left lane.
Toward I 10 East: San Antonio
6
337.7 mi into trip|~6h 1m in|I 10; US 87
Keep slight right at fork onto I 10; US 87
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
356.8 mi into trip|~6h 23m in
Take the exit toward Santa Rosa Street, Downtown
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 569C
Toward Santa Rosa Street, Downtown
6
357.4 mi into trip|~6h 24m in|North Pecos-La Trinidad
Keep slight right at fork onto North Pecos-La Trinidad
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight lane.
Fuel & Cost
Regular Gas
$54.17 one way
$108.34 round trip
$3.84/gal25.4 MPG avg125 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$59.29
$118.59
premium
$4.54
$64.01
$128.02
diesel
$5.61
$79.15
$158.30
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$54
Meals
$25–$50
Total
$79–$104
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 125.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $38 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
107.6
1
$37.64
$17.21
Efficient EV
89.6
1
$31.37
$14.34
EV Truck/SUV
143.4
1
$50.19
$22.94
Gas CO2
125 kg
EV CO2
42 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 15, 2026
Origin
Seymour, TX
Morning
in Seymour on Sunday
Local time
6:51 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Destination
San Antonio, TX
Morning
in San Antonio on Sunday
Local time
6:51 AM
CDT
Current temp
77°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
20 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
6h 26m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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...
9 mi from route
~22 min detour
Free
near mile 358.5
Lyndon B. Johnson National Historical Park tells the story of our 36th president beginning with his ancestors until his final resting place on his beloved LBJ Ranch. This entire "circle of life" gives...
26 mi from route
~66 min detour
Free
near mile 309
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is primarily a highway-focused drive, with 66% of the journey on major roads like US 83, US 183, and I 10. You'll encounter an 87.3-mile stretch on US 83, which is the longest uninterrupted segment, offering a consistent pace. While there are moments on other highways, the overall character is one of efficiency and direct travel. Expect a mix of high-speed interstate driving and well-maintained US highways, designed to get you to your destination without too many detours. The drive is built for steady progress rather than winding scenic byways.
66% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 87.3 mi on US 83.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on US 83 and US 183. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 155.7 miles in near US 83 / South 7th Street.
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 8 significant decision points across 358.5 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 155.7 miles (US 83 / South 7th Street): Lane positioning matters here; at 243.5 miles (US 83): Exit ramp - move to the correct lane early. Lane positioning matters here; at 337.7 miles (I 10; US 87): 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 6h 26m. Total distance: 358.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 26m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 87.3 miles on US 83. 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: at 155.7 miles (US 83 / South 7th Street): Lane positioning matters here; at 243.5 miles (US 83): Exit ramp - move to the correct lane early. Lane positioning matters here; at 337.7 miles (I 10; US 87): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — San Antonio Missions National Historical Park and Lyndon B Johnson National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.4 hours each way, a round trip means 12.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Antonio, TX before the return drive.
