How far is Smithville, TX from San Antonio, TX?
The driving distance from Smithville, TX to San Antonio, TX is about 103.7 miles (166.9 km), with a travel time of about 01h 44m by car.
- The straight-line flight distance is about 89.7 miles (144.3 km).
- For a round trip, plan for roughly 03h 28m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 44m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Guadalupe County, Texas, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Smithville and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithville and San Antonio.
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1
Start on Main Street
13 m · 5 sec · Main Street
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2
Turn right onto 3rd Street
1350 ft · 34 sec · 3rd Street
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3
Turn left onto Royston Street
107 m · 6 sec · Royston Street
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4
Continue on State Highway 95
1.4 km · 1 min · State Highway 95
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5
Turn right onto FM 535
10.7 mi · 19 min · FM 535
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6
Turn left
20.8 mi · 24 min
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7
Turn right
986 ft · 27 sec
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8
Take the ramp straight
1048 ft · 26 sec
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9
Merge slight left
48.8 mi · 49 min
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10
Keep slight left
12 mi · 13 min
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11
Keep slight left to continue on 90th Infantry Division Highway
1.2 km · 52 sec · 90th Infantry Division Highway
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12
Continue on Jose Lopez Freeway
1.6 mi · 2 min · Jose Lopez Freeway
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13
Take the exit slight right toward Commerce Street, Houston Street
790 ft · 19 sec
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14
Turn straight onto Interstate 10 East
1830 ft · 39 sec · Interstate 10 East
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15
Turn right onto East Houston Street
963 ft · 20 sec · East Houston Street
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16
Turn slight left onto East Commerce Street
4.3 mi · 7 min · East Commerce Street
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17
Turn left onto Military Plaza
119 m · 16 sec · Military Plaza
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18
Turn left onto Dolorosa Street
100 m · 8 sec · Dolorosa Street
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19
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Smithville and San Antonio.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
FM 535
Merge slight left
48.8 mi · 00h 49m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Sunny leaving Smithville and Mostly Sunny near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Smithville to San Antonio?
The road trip is about 103.7 miles (166.9 km) and usually takes 01h 44m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Luling is a useful midpoint, sitting about 50.6 miles from Smithville and 53.1 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 89.7 miles (144.3 km), while the road route adds roughly 14 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 3:02 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.83 one way or $27.66 round trip. Estimated CO2 is about 32.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Smithville and Mostly Sunny near San Antonio.
Stop Ideas Near Luling
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 Luling.
San Marcos Station
Austin
San Antonio Station
Taylor
Flight Path Map
This map shows the direct air route between Smithville and San Antonio. Straight-line distance: 89.67 mi (144.31 km).
#1 Smithville
City in Texas
| Population | 4,664 |
| Coordinates | 30.0085500, -97.1594300 |
| Altitude | 99 |
| 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: 167 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 27m |
| 40 mph (64.37 km/h) | 02h 35m |
| 50 mph (80.47 km/h) | 02h 04m |
| 60 mph (96.56 km/h) | 01h 43m |
| 70 mph (112.65 km/h) | 01h 28m |
| 80 mph (129 km/h) | 01h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $13.83 | $27.66 |
| Mid-grade | $4.25 | $15.56 | $31.12 |
| Premium | $4.59 | $16.80 | $33.61 |
| Diesel | $3.99 | $14.61 | $29.23 |
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 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.