How far is Robstown, TX from San Antonio, TX?
The driving distance from Robstown, TX to San Antonio, TX is about 135.5 miles (218 km), with a travel time of about 01h 56m by car.
- The straight-line flight distance is about 123.5 miles (198.7 km).
- For a round trip, plan for roughly 03h 53m 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 56m.
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 Live Oak County, Texas, United States
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 Robstown and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Robstown and San Antonio.
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1
Start on East Main Avenue
25 m · 9 sec · East Main Avenue
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2
Turn left onto South 1st Street
114 m · 18 sec · South 1st Street
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3
Turn left onto West Avenue A
1.5 km · 2 min · West Avenue A
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4
At the end of the road, turn left onto South US Highway 77
1.4 mi · 3 min · South US Highway 77
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5
Take the ramp slight left toward County Road 44
1247 ft · 31 sec
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6
Merge slight left onto U.S. Highway 77
4.7 mi · 5 min · U.S. Highway 77
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7
Merge slight left
1.4 mi · 1 min
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8
Keep slight left
1.3 mi · 1 min
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9
Continue straight
123.9 mi · 2 hr 5 min
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10
Take the exit slight right toward Commerce Street, Downtown, The Alamo
1358 ft · 33 sec
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11
Turn straight onto Interstate 37 South
116 m · 12 sec · Interstate 37 South
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12
Turn left onto East Commerce Street
1.4 km · 2 min · East Commerce Street
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13
Turn left onto Military Plaza
119 m · 16 sec · Military Plaza
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14
Turn left onto Dolorosa Street
100 m · 8 sec · Dolorosa Street
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15
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Robstown 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.
U.S. Highway 77
Continue straight
124 mi · 02h 05m
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 Robstown 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 Robstown to San Antonio?
The road trip is about 135.5 miles (218 km) and usually takes 01h 56m 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?
Three Rivers is a useful midpoint, sitting about 67.7 miles from Robstown and 67.7 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 123.5 miles (198.7 km), while the road route adds roughly 12 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 2:36 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.06 one way or $36.13 round trip. Estimated CO2 is about 42.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Robstown and Mostly Sunny near San Antonio.
Stop Ideas Near Three Rivers
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 Three Rivers.
San Antonio Station
Flight Path Map
This map shows the direct air route between Robstown and San Antonio. Straight-line distance: 123.47 mi (198.71 km).
#1 Robstown
City in Nueces County, Texas, United States
| Population | 11,133 |
| Coordinates | 27.7903000, -97.6688800 |
| Altitude | 22 |
| 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: 218 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 30m |
| 40 mph (64.37 km/h) | 03h 23m |
| 50 mph (80.47 km/h) | 02h 42m |
| 60 mph (96.56 km/h) | 02h 15m |
| 70 mph (112.65 km/h) | 01h 56m |
| 80 mph (129 km/h) | 01h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $18.06 | $36.13 |
| Mid-grade | $4.25 | $20.32 | $40.65 |
| Premium | $4.59 | $21.94 | $43.89 |
| Diesel | $3.99 | $19.09 | $38.17 |
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.