Origin
Robstown, TX
Evening in Robstown on Friday
Local time
7:52 PM
CDT
Current temp
67°F
Unavailable
Live forecast
Trip from Robstown, TX to San Antonio, TX
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
2h 21m
Distance
135.2 mi
218 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$20
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 12m
★
6 AM
2h 22m
8 AM
2h 41m
10 AM
2h 29m
12 PM
2h 27m
3 PM
2h 30m
5 PM
2h 40m
8 PM
2h 16m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Robstown, TX
Thomas balabaud
San Antonio, TX
Wikimedia Commons
Trip Overview
This 135.2-mile journey from Robstown, TX, to San Antonio, TX, is designed for efficiency, taking approximately 2 hours and 21 minutes to complete. Primarily utilizing I-37 and U.S. Highway 77, this route is almost entirely highway driving at 97%, making it an excellent candidate for a single-day trip. With an estimated fuel cost of around $20, it's an economical option for getting between these two points in the Great Plains region. The character of this drive is straightforward, focusing on covering ground smoothly and directly, without the need for an overnight stop. Consider this drive if you're looking for a no-fuss transition between cities.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
67.6 miles from Robstown, TX
A natural place for your longest stop of the day , about 1h 11m into the drive .
About the Cities
Arriving in San Antonio, TX
Full guide →San Antonio is the second largest city in the state of Texas and the 7th largest in the United States. It's the 24th largest metropolitan area in the country. Visited by more than 31 million annual visitors, San Antonio is a beautiful city at the axis of three different geological terrains: Hill Country, South Texas Plains and Prairie and Lakes. There's a lot to do in this city: fine art museums, historical missions and plenty of amusement parks in addition to great dining and lots of drinking. The culture and people are vibrant and interesting. San Antonio's downtown is one of the most lively in the nation.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 21m. Total distance: 135.2 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 21m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (97%). Some complex stretches to watch for.
Drive Character
Expect a highly focused highway experience on this route, with 97% of the drive occurring on major roadways like I-37 and U.S. Highway 77. You'll encounter one significant stretch of uninterrupted driving covering 125.3 miles on I-37, meaning extended periods without needing to navigate complex intersections or slower local roads. The profile is best described as a highway-focused drive, emphasizing speed and directness over varied scenery. This road personality lends itself to a consistent pace, allowing you to settle in for a straightforward drive from South Texas northwards.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 15 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 37 is the longest continuous segment at about 125.3 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 37 and U.S. Highway 77. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near South 1st Street.
Driving Effort
5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 135.2 miles you will encounter 10 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (South 1st Street): Navigation decision point; at 1 miles (TX 44 / South US Highway 77): Lane positioning matters here; at 8.7 miles: Highway fork - watch signs carefully.
Critical Maneuvers
5 of 10 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
0 mi into trip
|
~0m in
|
South 1st Street
Turn left onto South 1st Street
Navigation decision point
7
1 mi into trip
|
~2m in
|
TX 44 / South US Highway 77
At end of road, turn left onto TX 44 / South US Highway 77
Lane positioning matters here
Use the straight / left lanes.
4
8.7 mi into trip
|
~12m in
Keep slight left at fork
Highway fork - watch signs carefully
8
133.8 mi into trip
|
~2h 18m in
Take the exit toward Commerce Street, Downtown, The Alamo
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 141
Toward Commerce Street, Downtown, The Alamo
5
135.1 mi into trip
|
~2h 21m in
|
Dolorosa Street
Turn left onto Dolorosa Street
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 37 | 125.3 mi | 2h 6m |
| U.S. Highway 77 | 4.7 mi | 5m |
| South US Highway 77 | 1.4 mi | 3m |
| West Avenue A | 0.9 mi | 1m |
| East Commerce Street | 0.9 mi | 1m |
| Military Plaza | <0.1 mi | <1m |
| Interstate 37 South | <0.1 mi | <1m |
| South 1st Street | <0.1 mi | <1m |
Longest stretch:
I 37
— 125.3 mi, about 2h 6m
Turn-by-Turn Driving Directions
Step-by-step road directions between Robstown, TX and San Antonio, TX.
1
Start on East Main Avenue
81 ft
·
8 sec
·
East Main Avenue
2
Turn left onto South 1st Street
372 ft
·
17 sec
·
South 1st Street
3
Turn left onto TX 44 Business
0.9 mi
·
1 min
·
West Avenue A
4
At end of road, turn left onto TX 44
1.4 mi
·
3 min
·
South US Highway 77
Use the straight / left lanes.
5
Take the ramp
0.2 mi
·
30 sec
Toward County Road 44
6
Merge onto I 69E; US 77
4.7 mi
·
5 min
·
U.S. Highway 77
7
Merge onto I 37; US 77; I 69E
1.4 mi
·
1 min
·
I 37; US 77; I 69E
8
Keep slight left at fork
1.3 mi
·
1 min
9
Continue on I 37
124 mi
·
2 hr 5 min
·
I 37
Use the straight / slight right lanes.
10
Take the exit
0.3 mi
·
33 sec
Exit 141
Toward Commerce Street, Downtown, The Alamo
Use the straight / slight right lanes.
11
Turn straight onto Interstate 37 South
380 ft
·
11 sec
·
Interstate 37 South
12
Turn left onto East Commerce Street
0.9 mi
·
1 min
·
East Commerce Street
13
Turn left onto Military Plaza
392 ft
·
15 sec
·
Military Plaza
14
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
15
Arrive at destination
Dolorosa Street
Trip Plan
Given the relatively short 2-hour and 21-minute duration, this drive is easily accomplished in a single day. Aim to depart Robstown in the morning to maximize your time in San Antonio, or leave mid-afternoon to arrive just before evening. The longest stretch on I-37 is over 125 miles, so plan your fuel and rest stops accordingly before you embark, as opportunities might be less frequent during this segment. With a fuel cost estimate of $20, monitoring your gauge is straightforward. The flexibility of a shorter drive like this means you can adjust your departure time based on traffic or personal preference.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 67.6 miles from Robstown, TX, or about 1h 11m into the drive.
The longest continuous stretch on this route runs about 125.3 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 30 miles or 33m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 67.6 miles or 1h 11m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 55m
Traffic, exits, and arrival timing usually matter more near San Antonio, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Robstown, TX so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Robstown, TX
This is one driving day of about 135.2 miles and 2h 21m.
Your first comfortable stop window is around 30 miles from Robstown, TX.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 37 for about 125.3 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 67.6 mi from Robstown, TX · 1h 11m into the drive
Mid-route town
Meal stop
68 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 30 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 67.6 miles from Robstown, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 37 if your tank is already low. That segment runs about 125.3 miles.
Arriving in San Antonio, TX
The final approach into San Antonio, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around San Antonio, TX.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$20.43 one way
$40.86 round trip
$3.84/gal
25.4 MPG avg
47 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $22.36 | $44.72 |
| premium | $4.54 | $24.14 | $48.28 |
| diesel | $5.61 | $29.85 | $59.70 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$20
Meals
$25–$50
Total
$45–$70
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 47.3 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $14 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 40.6 | 0 | $14.20 | $6.49 |
| Efficient EV | 33.8 | 0 | $11.83 | $5.41 |
| EV Truck/SUV | 54.1 | 0 | $18.93 | $8.65 |
Gas CO2
47 kg
EV CO2
16 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
San Antonio, TX
Evening in San Antonio on Friday
Local time
7:52 PM
CDT
Current temp
90°F
Partly Sunny
SSE 10 mph
0% chance
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
23 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 21m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Robstown, TX to San Antonio, TX covers 135.2 miles and takes about 2h 21m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 37, U.S. Highway 77, South US Highway 77. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 67.6 miles from Robstown, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $20.43 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This drive requires moderate attention. Across 135.2 miles you will encounter 10 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: near the start (South 1st Street): Navigation decision point; at 1 miles (TX 44 / South US Highway 77): Lane positioning matters here; at 8.7 miles: Highway fork - watch signs carefully.
The route from Robstown, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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