How far is San Antonio, TX from Buna, TX?
The driving distance from San Antonio, TX to Buna, TX is about 311.9 miles (502 km), with a travel time of about 05h 39m by car.
- The straight-line flight distance is about 280.1 miles (450.8 km).
- For a round trip, plan for roughly 11h 18m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 39m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
City in Waller County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between San Antonio and Buna.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Buna.
-
1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
-
2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
-
3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
-
4
Turn left
111 m · 13 sec
-
5
Turn straight onto East Commerce Street
1.2 km · 1 min · East Commerce Street
-
6
Keep slight left to continue on East Commerce Street
2.7 mi · 4 min · East Commerce Street
-
7
Turn slight right onto East Houston Street
1349 ft · 31 sec · East Houston Street
-
8
Turn left onto Interstate 10 East
583 ft · 12 sec · Interstate 10 East
-
9
Take the ramp slight left toward I 10 East, US 90 East
874 ft · 21 sec
-
10
Merge slight left onto Jose Lopez Freeway
1.8 mi · 2 min · Jose Lopez Freeway
-
11
Continue on 90th Infantry Division Highway
22.2 mi · 23 min · 90th Infantry Division Highway
-
12
Continue on I 10 East: Houston, Austin, Waco
151.1 mi · 2 hr 34 min
-
13
Take the exit slight left toward I 10 Toll: Katy Tollway
1548 ft · 22 sec
-
14
Merge slight left onto Katy Tollway
3.2 mi · 4 min · Katy Tollway
-
15
Take the exit slight right
1092 ft · 15 sec
-
16
Merge slight right onto Katy Freeway
10.9 mi · 14 min · Katy Freeway
-
17
Continue on East Freeway
5.8 mi · 7 min · East Freeway
-
18
Keep slight left to continue on East Freeway
13.4 mi · 16 min · East Freeway
-
19
Keep slight left to continue on East Freeway
64.5 mi · 1 hr 12 min · East Freeway
-
20
Take the exit slight right toward US 69 North, US 96 North, US 287 North: Lufkin, Jasper
10.2 mi · 11 min · Eastex Freeway
-
21
Keep slight right to continue on US 96 North: Lumberton, Jasper
22.2 mi · 24 min
-
22
Take the exit right
47 m · 4 sec
-
23
Turn right onto US Highway 96 Business
1.3 mi · 2 min · US Highway 96 Business
-
24
Turn right
131 m · 7 sec
-
25
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between San Antonio and Buna.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 10 East
Continue on I 10 East: Houston, Austin, Waco
151 mi · 02h 34m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms leaving San Antonio and Chance Showers And Thunderstorms then Showers And Thunderstorms Likely near Buna.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Buna?
The road trip is about 311.9 miles (502 km) and usually takes 05h 39m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Brookshire is a useful midpoint, sitting about 155.8 miles from San Antonio and 156.2 miles from Buna.
How much longer is the road route than the straight-line distance?
The direct path is about 280.1 miles (450.8 km), while the road route adds roughly 31.8 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 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 5:42 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $41.61 one way or $83.21 round trip. Estimated CO2 is about 97.8 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms around San Antonio and Chance Showers And Thunderstorms then Showers And Thunderstorms Likely near Buna.
Stop Ideas Near Brookshire
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Katy Visitors Center
Sealy City Hall
Orchard Community Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Brookshire.
Prairie View, TX
Houston
Houston, TX
Bryan, TX
Flight Path Map
This map shows the direct air route between San Antonio and Buna. Straight-line distance: 280.11 mi (450.8 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 Buna
Census designated place
| Population | 2,142 |
| Coordinates | 30.4329800, -93.9624000 |
| Altitude | 23 |
| Country | United States |
End: Buna (-93.9624, 30.43298)
Estimated Travel Time
Distance: 502 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 23m |
| 40 mph (64.37 km/h) | 07h 47m |
| 50 mph (80.47 km/h) | 06h 14m |
| 60 mph (96.56 km/h) | 05h 11m |
| 70 mph (112.65 km/h) | 04h 27m |
| 80 mph (129 km/h) | 03h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $41.61 | $83.21 |
| Mid-grade | $4.25 | $46.81 | $93.63 |
| Premium | $4.59 | $50.55 | $101.09 |
| Diesel | $3.99 | $43.96 | $87.93 |
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.