How far is Red Oak, TX from San Antonio, TX?
The driving distance from Red Oak, TX to San Antonio, TX is about 275 miles (442.5 km), with a travel time of about 03h 56m by car.
- The straight-line flight distance is about 236 miles (379.8 km).
- For a round trip, plan for roughly 07h 53m 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 03h 56m.
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.
Village in the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Red Oak and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Red Oak and San Antonio.
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1
Start on the route
34 m · 10 sec
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2
Turn right onto West Red Oak Road
2512 ft · 1 min · West Red Oak Road
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3
Continue on West Red Oak Road
1.1 km · 1 min · West Red Oak Road
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4
Turn sharp right
119 m · 19 sec
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5
Turn right onto North Interstate 35E
1010 ft · 20 sec · North Interstate 35E
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6
Take the ramp slight left toward I 35E South
1413 ft · 19 sec
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7
Merge slight left
71.9 mi · 1 hr 13 min
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8
Continue on North Jack Kultgen Expressway
6.6 mi · 8 min · North Jack Kultgen Expressway
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9
Continue on Purple Heart Trail
37.9 mi · 39 min · Purple Heart Trail
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10
Keep slight left
55.8 mi · 59 min
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11
Keep slight left to continue on Purple Heart Trail
49.8 mi · 55 min · Purple Heart Trail
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12
Continue on Interstate Highway 35
1.7 mi · 2 min · Interstate Highway 35
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13
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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14
Continue on North Pan Am Expressway
10 mi · 12 min · North Pan Am Expressway
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15
Keep slight left to continue on North Pan Am Expressway
6.4 mi · 8 min · North Pan Am Expressway
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16
Keep slight left to continue on North Pan Am Expressway
2907 ft · 41 sec · North Pan Am Expressway
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17
Take the exit slight right toward Lexington Avenue, Main Avenue, San Pedro Avenue
684 ft · 17 sec
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18
Turn straight onto East Elmira Street
526 ft · 17 sec · East Elmira Street
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19
Turn left onto North Main Avenue
830 ft · 19 sec · North Main Avenue
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20
Enter the roundabout and take exit 2 toward Navarro Street
49 m · 3 sec · Navarro Street
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21
Exit the roundabout onto Navarro Street
34 m · 2 sec · Navarro Street
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22
Keep slight right to continue on North Main Avenue
2181 ft · 52 sec · North Main Avenue
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23
Turn right onto West Travis Street
68 m · 11 sec · West Travis Street
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24
Turn left onto North Flores Street
807 ft · 20 sec · North Flores Street
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25
Continue on Military Plaza
119 m · 16 sec · Military Plaza
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26
Turn left onto Dolorosa Street
100 m · 8 sec · Dolorosa Street
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27
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Red Oak and San Antonio.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
I 35E South
Merge slight left
71.9 mi · 01h 13m
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 leaving Red Oak and Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Red Oak to San Antonio?
The road trip is about 275 miles (442.5 km) and usually takes 03h 56m 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?
Salado is a useful midpoint, sitting about 127.9 miles from Red Oak and 147 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 236 miles (379.8 km), while the road route adds roughly 39 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 9:06 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $36.66 one way or $73.31 round trip. Estimated CO2 is about 86.2 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Red Oak and Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms near San Antonio.
Stop Ideas Near Salado
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 Salado.
Temple
Killeen, Texas
Fort Hood, Texas
Taylor
Flight Path Map
This map shows the direct air route between Red Oak and San Antonio. Straight-line distance: 236 mi (379.8 km).
#1 Red Oak
City in and county seat of Montgomery County, Iowa, United States
| Population | 14,098 |
| Coordinates | 32.5176400, -96.8044400 |
| Altitude | 185 |
| Country | United States |
#2 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 |
End: Dolorosa Street (-98.493645, 29.424163)
Estimated Travel Time
Distance: 443 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 09m |
| 40 mph (64.37 km/h) | 06h 52m |
| 50 mph (80.47 km/h) | 05h 29m |
| 60 mph (96.56 km/h) | 04h 34m |
| 70 mph (112.65 km/h) | 03h 55m |
| 80 mph (129 km/h) | 03h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $36.66 | $73.31 |
| Mid-grade | $4.25 | $41.24 | $82.49 |
| Premium | $4.59 | $44.53 | $89.07 |
| Diesel | $3.99 | $38.73 | $77.46 |
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.