How far is San Antonio, TX from Troy, TX?
The driving distance from San Antonio, TX to Troy, TX is about 153 miles (246.3 km), with a travel time of about 02h 49m by car.
- The straight-line flight distance is about 142.2 miles (228.8 km).
- For a round trip, plan for roughly 05h 38m 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 02h 49m.
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.
The eleventh most populous city in the United States and the center of the Austin metropolitan area.
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 Troy.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Troy.
-
1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
-
2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
-
3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
-
4
Turn left
111 m · 13 sec
-
5
Turn straight onto East Commerce Street
66 m · 13 sec · East Commerce Street
-
6
Take the ramp sharp left toward US 281 North, I 37 North
1159 ft · 28 sec
-
7
Merge slight left onto William J Bordelon Freeway
1.3 km · 56 sec · William J Bordelon Freeway
-
8
Take the exit slight right toward I 35 North: Austin
2907 ft · 1 min
-
9
Merge slight left onto North Pan Am Expressway
8.2 mi · 10 min · North Pan Am Expressway
-
10
Keep slight left to continue on North Pan Am Expressway
7.4 mi · 8 min · North Pan Am Expressway
-
11
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
-
12
Continue on Interstate Highway 35
1.9 mi · 2 min · Interstate Highway 35
-
13
Continue on Purple Heart Trail
47.8 mi · 52 min · Purple Heart Trail
-
14
Keep slight right to continue on Purple Heart Trail
71.9 mi · 1 hr 17 min · Purple Heart Trail
-
15
Take the exit slight right toward FM 935: Main Street, Loves Boulevard
1786 ft · 44 sec
-
16
Turn straight onto South Central Avenue
1.2 mi · 2 min · South Central Avenue
-
17
Arrive at your destination
0 m · 1 sec · South Central Avenue
Car Route Details
A richer read on the saved driving route between San Antonio and Troy.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Purple Heart Trail
Keep slight right to continue on Purple Heart Trail
71.9 mi · 01h 17m
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 Cloudy leaving San Antonio and Mostly Cloudy near Troy.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Troy?
The road trip is about 153 miles (246.3 km) and usually takes 02h 49m 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?
Austin is a useful midpoint, sitting about 76.6 miles from San Antonio and 76.4 miles from Troy.
How much longer is the road route than the straight-line distance?
The direct path is about 142.2 miles (228.8 km), while the road route adds roughly 10.8 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 12:52 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.41 one way or $40.81 round trip. Estimated CO2 is about 48 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Mostly Cloudy near Troy.
Stop Ideas Near Austin
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 Austin.
Austin
Taylor
San Marcos Station
Killeen, Texas
Flight Path Map
This map shows the direct air route between San Antonio and Troy. Straight-line distance: 142.18 mi (228.82 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 Troy
City in Bell County, Texas
| Population | 2,191 |
| Coordinates | 31.2068400, -97.3027800 |
| Altitude | 207 |
| Country | United States |
End: Troy (-97.30278, 31.20684)
Estimated Travel Time
Distance: 246 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 05m |
| 40 mph (64.37 km/h) | 03h 49m |
| 50 mph (80.47 km/h) | 03h 03m |
| 60 mph (96.56 km/h) | 02h 33m |
| 70 mph (112.65 km/h) | 02h 11m |
| 80 mph (129 km/h) | 01h 54m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $20.41 | $40.81 |
| Mid-grade | $4.25 | $22.96 | $45.92 |
| Premium | $4.59 | $24.79 | $49.58 |
| Diesel | $3.99 | $21.56 | $43.12 |
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.