How far is San Antonio, TX from Huntsville, TX?
The driving distance from San Antonio, TX to Huntsville, TX is about 226.8 miles (365 km), with a travel time of about 04h 16m by car.
- The straight-line flight distance is about 197.5 miles (317.9 km).
- For a round trip, plan for roughly 08h 33m 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 04h 16m.
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.
Mostly Cloudy
Partly Sunny
Driving Route Map
The map below follows the saved road route between San Antonio and Huntsville.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Huntsville.
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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
5.5 mi · 7 min
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26
Turn right onto West William J Bryan Parkway
1.6 km · 2 min · West William J Bryan Parkway
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27
Continue on East William J Bryan Parkway
2.2 mi · 4 min · East William J Bryan Parkway
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28
Continue on Boonville Road
3.2 mi · 5 min · Boonville Road
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29
Continue on Farm-to-Market Road 158
1.2 km · 1 min · Farm-to-Market Road 158
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30
Continue straight
47.8 mi · 56 min
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31
Turn right onto University Avenue
27 m · 4 sec · University Avenue
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32
Arrive at your destination
0 m · 1 sec · University Avenue
Car Route Details
A richer read on the saved driving route between San Antonio and Huntsville.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
State Highway 21 East
Continue on State Highway 21 East
65.2 mi · 01h 12m
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.
Mostly Cloudy leaving San Antonio and Partly Sunny near Huntsville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Huntsville?
The road trip is about 226.8 miles (365 km) and usually takes 04h 16m 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 113.3 miles from San Antonio and 113.5 miles from Huntsville.
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 29.3 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 8:26 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.23 one way or $60.46 round trip. Estimated CO2 is about 71.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Partly Sunny near Huntsville.
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 San Antonio and Huntsville. Straight-line distance: 197.53 mi (317.89 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 Huntsville
The second-largest city in Walker County, Texas.
| Population | 41,392 |
| Coordinates | 30.7235300, -95.5507800 |
| Altitude | 113 |
| Country | United States |
End: Huntsville (-95.55078, 30.72353)
Estimated Travel Time
Distance: 365 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 33m |
| 40 mph (64.37 km/h) | 05h 40m |
| 50 mph (80.47 km/h) | 04h 32m |
| 60 mph (96.56 km/h) | 03h 46m |
| 70 mph (112.65 km/h) | 03h 14m |
| 80 mph (129 km/h) | 02h 49m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $30.23 | $60.46 |
| Mid-grade | $4.25 | $34.02 | $68.03 |
| Premium | $4.59 | $36.73 | $73.46 |
| Diesel | $3.99 | $31.94 | $63.89 |
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.