How far is Huntsville, TX from San Antonio, TX?
The driving distance from Huntsville, TX to San Antonio, TX is about 230.8 miles (371.5 km), with a travel time of about 03h 51m by car.
- The straight-line flight distance is about 197.5 miles (317.9 km).
- For a round trip, plan for roughly 07h 42m 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 51m.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Huntsville and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Huntsville and San Antonio.
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1
Start on University Avenue
27 m · 12 sec · University Avenue
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2
Turn left onto 11th Street
1.2 mi · 2 min · 11th Street
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3
Continue on State Highway 30 West
46.6 mi · 54 min · State Highway 30 West
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4
Continue on Farm-to-Market Road 158
1.1 km · 1 min · Farm-to-Market Road 158
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5
Continue on Boonville Road
3.3 mi · 5 min · Boonville Road
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6
Continue on East William J Bryan Parkway
2.2 mi · 4 min · East William J Bryan Parkway
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7
Continue on West William J Bryan Parkway
1.6 km · 2 min · West William J Bryan Parkway
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8
Turn left onto West State Highway 21
71.4 mi · 1 hr 20 min · West State Highway 21
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9
Turn left onto State Highway 95
1748 ft · 30 sec · State Highway 95
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10
Turn right onto State Highway 71 East
125 m · 10 sec · State Highway 71 East
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11
Take the ramp slight left toward TX 21 West, TX 71 West
2021 ft · 49 sec
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12
Merge slight left onto State Highway 71 East
2.2 mi · 3 min · State Highway 71 East
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13
Continue straight
1.2 km · 50 sec
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14
Continue straight
2.8 mi · 3 min
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15
Take the exit slight right toward TX 21 West: San Marcos
1681 ft · 52 sec
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16
Turn left onto West State Highway 21
17.8 mi · 21 min · West State Highway 21
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17
Turn left onto US 183, Toll 130 South
1833 ft · 1 min
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18
Turn straight
2815 ft · 37 sec
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19
Take the ramp slight left toward TX 130 Toll South
1635 ft · 40 sec
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20
Merge slight left onto Pickle Parkway
34 mi · 30 min · Pickle Parkway
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21
Keep slight right to continue on I 10 West: San Antonio
3262 ft · 1 min
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22
Merge slight left
11.1 mi · 11 min
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23
Continue straight
9.4 mi · 9 min
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24
Keep slight left
12 mi · 13 min
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25
Keep slight left to continue on 90th Infantry Division Highway
1.2 km · 52 sec · 90th Infantry Division Highway
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26
Continue on Jose Lopez Freeway
1.6 mi · 2 min · Jose Lopez Freeway
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27
Take the exit slight right toward Commerce Street, Houston Street
790 ft · 19 sec
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28
Turn straight onto Interstate 10 East
1830 ft · 39 sec · Interstate 10 East
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29
Turn right onto East Houston Street
963 ft · 20 sec · East Houston Street
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30
Turn slight left onto East Commerce Street
4.3 mi · 7 min · East Commerce Street
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31
Turn left onto Military Plaza
119 m · 16 sec · Military Plaza
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32
Turn left onto Dolorosa Street
100 m · 8 sec · Dolorosa Street
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33
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Huntsville and San Antonio.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
West State Highway 21
Turn left onto West State Highway 21
71.4 mi · 01h 20m
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.
Partly Sunny leaving Huntsville and Mostly Cloudy near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Huntsville to San Antonio?
The road trip is about 230.8 miles (371.5 km) and usually takes 03h 51m 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?
Camp Swift is a useful midpoint, sitting about 113.5 miles from Huntsville and 117.4 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 197.5 miles (317.9 km), while the road route adds roughly 33.3 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 9:18 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.76 one way or $61.52 round trip. Estimated CO2 is about 72.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Huntsville and Mostly Cloudy near San Antonio.
Stop Ideas Near Camp Swift
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 Camp Swift.
Taylor
Austin
San Marcos Station
Temple
Flight Path Map
This map shows the direct air route between Huntsville and San Antonio. Straight-line distance: 197.53 mi (317.89 km).
#1 Huntsville
The second-largest city in Walker County, Texas.
| Population | 41,392 |
| Coordinates | 30.7235300, -95.5507800 |
| Altitude | 113 |
| 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: 371 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 41m |
| 40 mph (64.37 km/h) | 05h 46m |
| 50 mph (80.47 km/h) | 04h 36m |
| 60 mph (96.56 km/h) | 03h 50m |
| 70 mph (112.65 km/h) | 03h 17m |
| 80 mph (129 km/h) | 02h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $30.76 | $61.52 |
| Mid-grade | $4.25 | $34.61 | $69.22 |
| Premium | $4.59 | $37.37 | $74.74 |
| Diesel | $3.99 | $32.50 | $65.01 |
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 · May 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.