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Trip from San Augustine, TX to San Antonio, TX

Drive Time

6h 24m

Distance

337.7 mi

544 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$52

one way

EV Charging

None

0 DC fast

Best Time to Leave

Save up to 37 min
4 AM
6h 12m ★
6 AM
6h 24m
8 AM
6h 49m
10 AM
6h 33m
12 PM
6h 31m
3 PM
6h 34m
5 PM
6h 48m
8 PM
6h 17m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Downtown San Augustine, TX, TX

San Augustine, TX

Mark Direen

Downtown San Antonio, TX, TX

San Antonio, TX

Wikimedia Commons

Trip Overview

The drive from San Augustine, TX to San Antonio, TX covers 337.7 miles and takes about 6h 24m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on TX 21, TX 103, Pickle Parkway for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 148.3 miles on TX 21. At current regular gas prices, budget about $51.59 one way before food or hotel costs.

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

168.9 miles from San Augustine, TX

A natural place for your longest stop of the day , about 3h 17m into the drive .

Drive Character

This is a 6h 24m highway drive covering 337.7 miles, with most of the trip on TX 21 and TX 103. The longest continuous stretch is about 148.3 miles on TX 21.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 44 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
TX 21 is the longest continuous segment at about 148.3 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on TX 21 and TX 103. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 43.2 miles in near US 69; Loop 287.

Route Complexity 10/10

High effort - long or complex enough to need steady focus all day

This is a demanding drive. With 32 significant decision points across 337.7 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 43.2 miles (US 69; Loop 287): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 237.2 miles (TX 95 / State Highway 95): Lane positioning matters here; at 261.9 miles: Lane positioning matters here. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 32 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

6
43.2 mi into trip | ~55m in | US 69; Loop 287

Keep slight left at fork onto US 69; Loop 287 toward US 69 North, Loop 287 West: Tyler

Highway fork - watch signs carefully. Multiple destination signs - pick the right one

Toward US 69 North, Loop 287 West: Tyler
6
237.2 mi into trip | ~4h 35m in | TX 95 / State Highway 95

Turn left onto TX 95 / State Highway 95

Lane positioning matters here

Use the left / straight lanes.
7
261.9 mi into trip | ~5h 5m in

Turn left toward US 183, Toll 130 South

Lane positioning matters here. Multiple destination signs - pick the right one

Use the left lane. Toward US 183, Toll 130 South
7
297.1 mi into trip | ~5h 38m in

Keep slight right at fork toward I 10 West: San Antonio

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight left / slight right lanes. Toward I 10 West: San Antonio
8
332.6 mi into trip | ~6h 15m in

Take the exit toward Commerce Street, Houston Street

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 579 Toward Commerce Street, Houston Street

Towns Along This Route

Between San Augustine, TX and San Antonio, TX, road signs point toward Loop 287 West: Tyler, Loop 287 South, Fm 2680 and Toll 130 South.

Loop 287 West: Tyler

43.2 mi in | ~55m | via US 69; Loop 287

Loop 287 South

45.8 mi in | ~58m | via Loop 287

Fm 2680

45.8 mi in | ~58m | via Loop 287

Toll 130 South

261.9 mi in | ~5h 5m

Main Roads

Road Distance Duration
TX 21 148.3 mi 2h 48m
TX 103 41.4 mi 44m
Pickle Parkway 34 mi 29m
I 10 32.5 mi 33m
TX 7 31.3 mi 34m
West State Highway 21 17.8 mi 20m
South Broadway Street 12 mi 20m
East Commerce Street 4.3 mi 7m
Longest stretch: TX 21 — 148.3 mi, about 2h 48m

Turn-by-Turn Driving Directions

Step-by-step road directions between San Augustine, TX and San Antonio, TX.

1

Start on Loop 547

289 ft · 13 sec · Columbia Street
2

Turn left onto FM 2213

373 ft · 12 sec · South Liberty Street
3

Turn right onto TX 21; TX 147

0.3 mi · 33 sec · East Main Street
4

Turn left onto TX 147

12 mi · 20 min · South Broadway Street
5

Continue on TX 103

30 mi · 32 min · TX 103
6

Take the exit

106 ft · 2 sec
7

Turn straight onto North Medford Drive

252 ft · 6 sec · North Medford Drive
8

Take the ramp

0.2 mi · 20 sec
9

Merge onto US 59; US 69; Loop 287

0.9 mi · 1 min · US 59; US 69; Loop 287
10

Keep slight left at fork onto US 69; Loop 287

2.5 mi · 3 min · US 69; Loop 287
Toward US 69 North, Loop 287 West: Tyler
11

Take the exit onto Loop 287

0.8 mi · 1 min · Loop 287
Toward Loop 287 South, TX 103 West, FM 2680, US 69 Business: Kurth Drive
12

Turn left onto TX 103; Loop 287

0.7 mi · 55 sec · John Redditt Drive
13

Take the exit onto TX 103

12 mi · 12 min · TX 103
14

Continue on TX 7

31 mi · 34 min · TX 7
15

Turn right onto US 287; TX 7

129 ft · 2 sec · 5th Street
16

Turn left onto US 287; TX 7; TX 19; TX 21

196 ft · 6 sec · East Houston Avenue
17

Turn left onto US 287; TX 7; TX 19; TX 21

289 ft · 8 sec · South 4th Street
18

Turn right onto TX 7; TX 21

1.6 mi · 2 min · East Goliad Avenue
19

Turn left onto TX 21

145 mi · 2 hr 44 min · TX 21
Use the left lane.
20

Turn left onto TX 95

0.3 mi · 29 sec · State Highway 95
Use the left / straight lanes.
21

Turn right onto TX 21

409 ft · 10 sec · State Highway 71 East
Use the right lane.
22

Take the ramp

0.4 mi · 49 sec
Toward TX 21 West, TX 71 West
23

Merge onto TX 21; TX 71

2.2 mi · 2 min · State Highway 71 East
Use the straight / slight right lanes.
24

Continue on TX 71; TX 21

0.7 mi · 49 sec · TX 71; TX 21
Use the straight / slight right lanes.
25

Continue on TX 21; TX 71

2.8 mi · 3 min · TX 21; TX 71
26

Take the exit onto TX 21

0.3 mi · 51 sec · TX 21
Toward TX 21 West: San Marcos
27

Turn left onto TX 21

18 mi · 20 min · West State Highway 21
28

Turn left

0.3 mi · 1 min
Toward US 183, Toll 130 South Use the left lane.
29

Turn straight onto US 183

0.5 mi · 36 sec · US 183
30

Take the ramp

0.3 mi · 39 sec
Toward TX 130 Toll South
31

Merge onto TX 130 Toll

34 mi · 29 min · Pickle Parkway
Use the straight / slight right lanes.
32

Keep slight right at fork

0.6 mi · 1 min
Toward I 10 West: San Antonio Use the slight left / slight right lanes.
33

Merge onto I 10; TX 130

11 mi · 11 min · I 10; TX 130
Use the straight / slight right lanes.
34

Continue on I 10; US 90; TX 130

9.4 mi · 9 min · I 10; US 90; TX 130
Use the straight / slight right lanes.
35

Keep slight left at fork onto I 10; US 90; TX 130

12 mi · 12 min · I 10; US 90; TX 130
Use the straight / slight right lanes.
36

Keep slight left at fork onto I 10; US 90; TX 130

0.8 mi · 51 sec · 90th Infantry Division Highway
Use the straight / slight right lanes.
37

Continue on I 10; US 90

1.6 mi · 1 min · Jose Lopez Freeway
Use the straight / slight right lanes.
38

Take the exit

0.1 mi · 19 sec
Exit 579 Toward Commerce Street, Houston Street Use the straight / slight right lanes.
39

Turn straight onto Interstate 10 East

0.3 mi · 38 sec · Interstate 10 East
40

Turn right onto East Houston Street

0.2 mi · 20 sec · East Houston Street
41

Turn slight left onto East Commerce Street

4.3 mi · 7 min · East Commerce Street
42

Turn left onto Military Plaza

392 ft · 15 sec · Military Plaza
43

Turn left onto Dolorosa Street

327 ft · 8 sec · Dolorosa Street
44

Arrive at destination

Dolorosa Street

Trip Plan

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 168.9 miles from San Augustine, TX, or about 3h 17m into the drive.
The longest continuous stretch on this route runs about 148.3 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 80 miles or 1h 36m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 168.9 miles or 3h 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 5h 20m

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 San Augustine, 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 Augustine, TX

This is one driving day of about 337.7 miles and 6h 24m.

Your first comfortable stop window is around 80 miles from San Augustine, 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 TX 21 for about 148.3 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 168.9 mi from San Augustine, TX · 3h 17m into the drive

Downtown Austin, TX, TX

Mid-route town

Meal stop

Austin, TX

169 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Popular next leg

Austin, TX to San Antonio, TX

79.2 mi · 1h 30m

Pacing Suggestions

Houston, TX

Fuel and coffee

A short stop after about 80 miles helps settle the day before fatigue starts building.

Austin, TX

Meal break

The midpoint is around 168.9 miles from San Augustine, TX, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before TX 21 if your tank is already low. That segment runs about 148.3 miles.

Arriving in San Antonio, TX

The final approach into San Antonio, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.

Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around San Antonio, TX.

After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

National Parks Near This Route

Worth a detour if your schedule allows.

San Antonio Missions National Historical Park

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 337.7
View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

Fuel & Cost

Regular Gas

$51.59 one way

$103.17 round trip

$3.88/gal 25.4 MPG avg 118 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.25 $56.53 $113.06
premium $4.59 $61.04 $122.08
diesel $5.64 $75.03 $150.05

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$52

Meals

$25–$50

Total

$77–$102

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 118.2 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $35 in charging · 1 stop · 66% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 101.3 1 $35.46 $16.21
Efficient EV 84.4 0 $29.55 $13.51
EV Truck/SUV 135.1 1 $47.28 $21.61

Gas CO2

118 kg

EV CO2

40 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 data refreshed 3 days ago

Origin

San Augustine, TX

Morning in San Augustine on Monday

Local time

9:49 AM

CDT

Current temp

65°F

Unavailable

Live forecast

Destination

San Antonio, TX

Morning in San Antonio on Monday

Local time

9:49 AM

CDT

Current temp

81°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

16 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 24m 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.

Frequently Asked Questions

The drive from San Augustine, TX to San Antonio, TX covers 337.7 miles and takes about 6h 24m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are TX 21, TX 103, Pickle Parkway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 168.9 miles from San Augustine, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $51.59 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 32 significant decision points across 337.7 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.
The main spots that need attention: at 43.2 miles (US 69; Loop 287): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 237.2 miles (TX 95 / State Highway 95): Lane positioning matters here; at 261.9 miles: Lane positioning matters here. Multiple destination signs - pick the right one.
Between San Augustine, TX and San Antonio, TX, road signs point toward Loop 287 West: Tyler, Loop 287 South, Fm 2680 and Toll 130 South.

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Return Trip

San Antonio, TX to San Augustine, TX

Plan the drive back the other way.

336.8 mi 6h 23m

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