How far is San Antonio, TX from San Augustine, TX?
The driving distance from San Antonio, TX to San Augustine, TX is about 336.8 miles (542.1 km), with a travel time of about 06h 23m by car.
- The straight-line flight distance is about 299 miles (481.2 km).
- For a round trip, plan for roughly 12h 47m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 06h 23m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between San Antonio and San Augustine.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and San Augustine.
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1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
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2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
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3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
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4
Turn left
111 m · 13 sec
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5
Turn straight onto East Commerce Street
1.2 km · 1 min · East Commerce Street
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6
Keep slight left to continue on East Commerce Street
2.7 mi · 4 min · East Commerce Street
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7
Turn slight right onto East Houston Street
1349 ft · 31 sec · East Houston Street
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8
Turn left onto Interstate 10 East
583 ft · 12 sec · Interstate 10 East
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9
Take the ramp slight left toward I 10 East, US 90 East
874 ft · 21 sec
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10
Merge slight left onto Jose Lopez Freeway
1.8 mi · 2 min · Jose Lopez Freeway
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11
Continue on 90th Infantry Division Highway
22.2 mi · 23 min · 90th Infantry Division Highway
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12
Continue on I 10 East: Houston, Austin, Waco
10.9 mi · 11 min
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13
Take the exit slight right toward TX 130 Toll North: Austin, Waco
1.5 km · 2 min
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14
Continue on Pickle Parkway
34 mi · 30 min · Pickle Parkway
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15
Take the exit slight right toward TX 21: Old Lockhart Road, Laws Road
1274 ft · 31 sec
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16
Turn straight
2939 ft · 39 sec
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17
Turn slight right onto TX 21
1465 ft · 1 min
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18
Turn right onto Camino Real
17.6 mi · 21 min · Camino Real
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19
Take the ramp slight right
5.5 mi · 7 min
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20
Take the exit slight right
1067 ft · 26 sec
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21
Turn straight onto College Street
1.4 km · 2 min · College Street
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22
Turn left onto State Highway 95
1945 ft · 35 sec · State Highway 95
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23
Turn right onto Chestnut Street
1.3 km · 1 min · Chestnut Street
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24
Continue on State Highway 21 East
65.2 mi · 1 hr 12 min · State Highway 21 East
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25
Keep slight left
79.2 mi · 1 hr 31 min
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26
At the end of the road, turn right
33 mi · 37 min
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27
Continue straight
11.6 mi · 12 min
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28
Continue on North Raguet Street
2 mi · 3 min · North Raguet Street
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29
Turn left onto Abney Avenue
1.1 km · 2 min · Abney Avenue
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30
Continue on Abney Avenue
145 m · 13 sec · Abney Avenue
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31
Continue on East Laurel Avenue
701 ft · 14 sec · East Laurel Avenue
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32
Continue on Atkinson Drive
3.6 mi · 5 min · Atkinson Drive
-
33
Continue straight
28.7 mi · 30 min
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34
Turn slight left
1.9 mi · 3 min
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35
Keep slight left
9.2 mi · 16 min
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36
Turn right onto West Main Street
1530 ft · 31 sec · West Main Street
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37
Turn left onto South Liberty Street
114 m · 12 sec · South Liberty Street
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38
Turn right onto Columbia Street
88 m · 8 sec · Columbia Street
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39
Arrive at your destination
0 m · 1 sec · Columbia Street
Car Route Details
A richer read on the saved driving route between San Antonio and San Augustine.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
State Highway 21 East
Keep slight left
79.2 mi · 01h 31m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Mostly Cloudy leaving San Antonio and Mostly Cloudy then Chance Showers And Thunderstorms near San Augustine.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to San Augustine?
The road trip is about 336.8 miles (542.1 km) and usually takes 06h 23m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Fairview is a useful midpoint, sitting about 168.3 miles from San Antonio and 168.5 miles from San Augustine.
How much longer is the road route than the straight-line distance?
The direct path is about 299 miles (481.2 km), while the road route adds roughly 37.8 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $44.93 one way or $89.86 round trip. Estimated CO2 is about 105.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Mostly Cloudy then Chance Showers And Thunderstorms near San Augustine.
Stop Ideas Near Fairview
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Fairview.
Bryan, TX
Prairie View, TX
Taylor
Temple
Flight Path Map
This map shows the direct air route between San Antonio and San Augustine. Straight-line distance: 299.01 mi (481.21 km).
#1 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
#2 San Augustine
Town of the United States
| Population | 1,865 |
| Coordinates | 31.5299000, -94.1060300 |
| Altitude | 113 |
| Country | United States |
End: San Augustine (-94.10603, 31.5299)
Estimated Travel Time
Distance: 542 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 13m |
| 40 mph (64.37 km/h) | 08h 25m |
| 50 mph (80.47 km/h) | 06h 44m |
| 60 mph (96.56 km/h) | 05h 36m |
| 70 mph (112.65 km/h) | 04h 48m |
| 80 mph (129 km/h) | 04h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $44.93 | $89.86 |
| Mid-grade | $4.25 | $50.56 | $101.11 |
| Premium | $4.59 | $54.59 | $109.17 |
| Diesel | $3.99 | $47.48 | $94.95 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Texas · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.