Trip from Robstown, TX to San Antonio, TX

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Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 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

Save up to 29 min

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.

Best Time Drive vs Fly

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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 .

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.

Start on East Main Avenue

81 ft · 8 sec · East Main Avenue

Turn left onto South 1st Street

372 ft · 17 sec · South 1st Street

Turn left onto TX 44 Business

0.9 mi · 1 min · West Avenue A

At end of road, turn left onto TX 44

1.4 mi · 3 min · South US Highway 77

Use the straight / left lanes.

Take the ramp

0.2 mi · 30 sec

Toward County Road 44

Merge onto I 69E; US 77

4.7 mi · 5 min · U.S. Highway 77

Merge onto I 37; US 77; I 69E

1.4 mi · 1 min · I 37; US 77; I 69E

Keep slight left at fork

1.3 mi · 1 min

Continue on I 37

124 mi · 2 hr 5 min · I 37

Use the straight / slight right lanes.

Take the exit

0.3 mi · 33 sec

Exit 141 Toward Commerce Street, Downtown, The Alamo Use the straight / slight right lanes.

Turn straight onto Interstate 37 South

380 ft · 11 sec · Interstate 37 South

Turn left onto East Commerce Street

0.9 mi · 1 min · East Commerce Street

Turn left onto Military Plaza

392 ft · 15 sec · Military Plaza

Turn left onto Dolorosa Street

327 ft · 8 sec · Dolorosa Street

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.

Mid-route town

Meal stop

Fashing, TX

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

Orange Grove, TX

Fuel and coffee

A short stop after about 30 miles helps settle the day before fatigue starts building.

Fashing, TX

Meal break

4.7 ★ ★ ★ ★ ★

Near the end, right off the route

Home stretch 0.8 mi from route ~2 min detour

San Antonio, Texas

Hours: 9 am–10 pm

+12102271373

Visit website

Place data sourced from public business listings. Hours and availability may vary.

Heads-up: tricky spots

5 of 10

5 decision points cluster between mile 0 and 135.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

0 mi into trip | ~0m in | South 1st Street

Turn left onto South 1st Street

Navigation decision point

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.

8.7 mi into trip | ~12m in

Keep slight left at fork

Highway fork - watch signs carefully

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

135.1 mi into trip | ~2h 21m in | Dolorosa Street

Turn left onto Dolorosa Street

Navigation decision point

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	DC Fast	Home Charge
Average EV	40.6	$14.20	$6.49
Efficient EV	33.8	$11.83	$5.41
EV Truck/SUV	54.1	$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.

Forecast as of Apr 18, 2026

Origin

Robstown, TX

Late night in Robstown on Tuesday

Local time

3:11 AM

CDT

Current temp

89°F

Unavailable

Live forecast

Destination

San Antonio, TX

Late night in San Antonio on Tuesday

Local time

3:11 AM

CDT

Current temp

68°F

Mostly Cloudy

SSE 5 to 15 mph 1% chance Live forecast

Severe Thunderstorm Warning

Severe Thunderstorm Warning issued April 17 at 10:45PM CDT until April 17 at 11:30PM CDT by NWS Norman OK

Wind Advisory

Wind Advisory issued April 17 at 10:38PM CDT until April 18 at 1:00PM CDT by NWS San Angelo TX

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

21 degrees cooler 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.

National Parks Near This Route

Worth a detour if your schedule allows.

San Antonio Missions National Historical Park

National Historical Park

Welcome to San Antonio Missions, a National Park Service site and the only UNESCO World Heritage Site in Texas. Each mission in the park is a center of community and has been since the early 1700s. Th...

1 mi from route ~3 min detour Free near mile 125.9

View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

What kind of drive is this?

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.

97% highway — fuel and pacing are the main things to plan.

15 navigation steps total — most of the decisions cluster near the start and finish.

Longest single stretch: 125.3 mi on I 37.

How Hard Is This Drive?

5/10

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.

About the Cities

Arriving in San Antonio, TX

Full guide →

Founded 1718

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.

Top landmarks

• Alamo Mission in San Antonio — historic place in San Antonio, Bexar County, Texas
• San Antonio Missions National Historical Park — historic district in San Antonio, Bexar County, Texas
• Fort Sam Houston — military base in San Antonio, Texas

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.

Frequently Asked Questions

The longest stretch is about 125.3 miles on I 37. The full list of main roads is in the Roads section above.

Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.

Yes — San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.

Yes. A round trip is manageable in a single day if you plan a break at San Antonio, TX before heading back.

How this page is built

Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.

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Trip from Robstown, TX to San Antonio, TX

Best Time to Leave

Trip Overview

Main Roads

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Stops Along Your Drive

Spanish Governor's Palace

GO RIO San Antonio River Cruises

San Antonio | The Saga

Hemisfair

San Antonio Fire Museum

The Amazing Mirror Maze

SEA LIFE San Antonio

San Antonio River Lock & Dam

Heads-up: tricky spots

Fuel & Cost

Travel Intel

Robstown, TX

San Antonio, TX

Same local time

21 degrees cooler at arrival

2h 21m on the road

National Parks Near This Route

San Antonio Missions National Historical Park

What kind of drive is this?

How Hard Is This Drive?

About the Cities

Arriving in San Antonio, TX

Who Is This Route For?

Frequently Asked Questions

Which road carries most of the drive?

Is this a good trip with kids?

Where does this route get tricky?

Are there national parks near this route?

Can I do this as a round trip in one go?

How this page is built

Explore More

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