How far is San Antonio, TX from Somerville, TX?
The driving distance from San Antonio, TX to Somerville, TX is about 163.5 miles (263.2 km), with a travel time of about 03h 04m by car.
- The straight-line flight distance is about 133.8 miles (215.4 km).
- For a round trip, plan for roughly 06h 09m 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 04m.
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 Travis County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between San Antonio and Somerville.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Somerville.
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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
41.2 mi · 45 min · State Highway 21 East
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25
Turn right onto Farm-to-Market Road 60
8.1 mi · 10 min · Farm-to-Market Road 60
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26
Continue on Farm-to-Market Road 976
3.9 mi · 5 min · Farm-to-Market Road 976
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27
At the end of the road, turn right
9.1 mi · 14 min
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28
Turn left onto East 8th
61 m · 6 sec · East 8th
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29
Turn right onto Avenue A
49 m · 7 sec · Avenue A
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30
Arrive at your destination
0 m · 1 sec · Avenue A
Car Route Details
A richer read on the saved driving route between San Antonio and Somerville.
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
41.2 mi · 00h 45m
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 Mostly Cloudy near Somerville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Somerville?
The road trip is about 163.5 miles (263.2 km) and usually takes 03h 04m 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?
Mustang Ridge is a useful midpoint, sitting about 81.8 miles from San Antonio and 81.8 miles from Somerville.
How much longer is the road route than the straight-line distance?
The direct path is about 133.8 miles (215.4 km), while the road route adds roughly 29.7 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 10:50 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.80 one way or $43.61 round trip. Estimated CO2 is about 51.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Mostly Cloudy near Somerville.
Stop Ideas Near Mustang Ridge
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 Mustang Ridge.
Austin
San Marcos Station
Taylor
San Antonio Station
Flight Path Map
This map shows the direct air route between San Antonio and Somerville. Straight-line distance: 133.86 mi (215.42 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 Somerville
City in Texas, United States
| Population | 1,443 |
| Coordinates | 30.3460400, -96.5283000 |
| Altitude | 76 |
| Country | United States |
End: Somerville (-96.5283, 30.34604)
Estimated Travel Time
Distance: 263 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 27m |
| 40 mph (64.37 km/h) | 04h 05m |
| 50 mph (80.47 km/h) | 03h 16m |
| 60 mph (96.56 km/h) | 02h 43m |
| 70 mph (112.65 km/h) | 02h 20m |
| 80 mph (129 km/h) | 02h 02m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $21.80 | $43.61 |
| Mid-grade | $4.25 | $24.53 | $49.07 |
| Premium | $4.59 | $26.49 | $52.98 |
| Diesel | $3.99 | $23.04 | $46.08 |
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.