How far is San Antonio, TX from Rio Grande City, TX?
The driving distance from San Antonio, TX to Rio Grande City, TX is about 259.2 miles (417.1 km), with a travel time of about 04h 44m by car.
- The straight-line flight distance is about 211.3 miles (340 km).
- For a round trip, plan for roughly 09h 28m 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 44m.
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 Texas, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between San Antonio and Rio Grande City.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Rio Grande City.
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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
1042 ft · 28 sec · West Market Street
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3
Turn left onto Navarro Street
76 m · 12 sec · Navarro Street
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4
Turn left onto East Commerce Street
2662 ft · 1 min · East Commerce Street
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5
Turn left onto South Santa Rosa Street
2853 ft · 1 min · South Santa Rosa Street
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6
Continue on South Laredo Street
151 m · 13 sec · South Laredo Street
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7
Turn right onto Guadalupe Street
158 m · 17 sec · Guadalupe Street
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8
Take the ramp left toward I 35 South, I 10 East
1085 ft · 27 sec
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9
Merge slight left onto South Pan Am Expressway
10 mi · 12 min · South Pan Am Expressway
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10
Continue on Purple Heart Trail
144.4 mi · 2 hr 26 min · Purple Heart Trail
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11
Continue on Santa Ursula Avenue
549 ft · 16 sec · Santa Ursula Avenue
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12
Turn left onto Matamoros Street
2145 ft · 54 sec · Matamoros Street
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13
Continue on Chihuahua Street
1 mi · 2 min · Chihuahua Street
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14
Turn right onto North Meadow Avenue
2 mi · 4 min · North Meadow Avenue
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15
Turn right onto South Zapata Highway
5.4 mi · 8 min · South Zapata Highway
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16
Continue on US Highway 83 South
14.2 mi · 16 min · US Highway 83 South
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17
Continue on United States Highway 83
54.3 mi · 1 hr 1 min · United States Highway 83
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18
Continue on North Grant Street
17.4 mi · 20 min · North Grant Street
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19
Continue on United States Highway 83
7.7 mi · 9 min · United States Highway 83
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20
Continue on West Main Street
2353 ft · 33 sec · West Main Street
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21
Turn left onto North Britton Avenue
114 m · 19 sec · North Britton Avenue
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22
Arrive at your destination
0 m · 1 sec · North Britton Avenue
Car Route Details
A richer read on the saved driving route between San Antonio and Rio Grande City.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Purple Heart Trail
Continue on Purple Heart Trail
144 mi · 02h 26m
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.
Partly Sunny leaving San Antonio and Mostly Sunny near Rio Grande City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Rio Grande City?
The road trip is about 259.2 miles (417.1 km) and usually takes 04h 44m 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?
Cactus is a useful midpoint, sitting about 129.9 miles from San Antonio and 129.4 miles from Rio Grande City.
How much longer is the road route than the straight-line distance?
The direct path is about 211.3 miles (340 km), while the road route adds roughly 47.9 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 7:32 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $34.58 one way or $69.16 round trip. Estimated CO2 is about 81.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around San Antonio and Mostly Sunny near Rio Grande City.
Flight Path Map
This map shows the direct air route between San Antonio and Rio Grande City. Straight-line distance: 211.28 mi (340.03 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 Rio Grande City
City in Starr County, Texas, United States
| Population | 14,511 |
| Coordinates | 26.3797900, -98.8203000 |
| Altitude | 53 |
| Country | United States |
End: Rio Grande City (-98.8203, 26.37979)
Estimated Travel Time
Distance: 417 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 38m |
| 40 mph (64.37 km/h) | 06h 28m |
| 50 mph (80.47 km/h) | 05h 11m |
| 60 mph (96.56 km/h) | 04h 19m |
| 70 mph (112.65 km/h) | 03h 42m |
| 80 mph (129 km/h) | 03h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $34.58 | $69.16 |
| Mid-grade | $4.25 | $38.91 | $77.81 |
| Premium | $4.59 | $42.01 | $84.02 |
| Diesel | $3.99 | $36.54 | $73.07 |
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 · Jun 11, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.