Trip from Dallas, TX to San Antonio, TX

Drive Time

4h 53m

Distance

273.5 mi

440 km

Drive Score

9/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$42

one way

EV Charging

station data

Best Time to Leave

Save up to 40 min

4 AM

4h 40m ★

6 AM

4h 53m

8 AM

5h 20m

10 AM

5h 3m

12 PM

5h 0m

3 PM

5h 4m

5 PM

5h 19m

8 PM

4h 45m

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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Dallas, TX

Wikimedia Commons

San Antonio, TX

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Trip Overview

Connecting Dallas and San Antonio, this 273.5-mile journey is a straightforward trek across the Texas Great Plains. You can expect to spend about 4 hours and 53 minutes behind the wheel, making it a manageable drive to complete in a single day. Budget roughly $41 for fuel to cover the trip, which primarily utilizes the I-35 corridor. Because the duration is under five hours, most travelers find it unnecessary to book an overnight stay unless they prefer a slower pace. The route is entirely contained within Texas, keeping you within the same regional landscape for the duration of your travel.

Trip Pace

Same-day drive is realistic

A same-day return is possible, but it will make for a full day on the road.

Break Rhythm

1 planned break

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

136.7 miles from Dallas, TX

A natural place for your longest stop of the day , about 2h 22m into the drive .

Drive Character

This trip is a highway-focused drive, with 63% of your time spent on major thoroughfares like the South R L Thornton Freeway and the Purple Heart Trail. You will encounter a mix of fast-paced interstate travel and transitionary stretches that define the central Texas landscape. Be prepared for a consistent rhythm, as your longest uninterrupted segment covers 99.6 miles on the Purple Heart Trail. While the road personality is largely functional, the steady flow of the highway keeps your progress efficient. You should anticipate a predictable experience that prioritizes speed and directness over technical backroads.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.

There are about 29 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Purple Heart Trail is the longest continuous segment at about 99.6 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on Purple Heart Trail and South R L Thornton Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.6 miles in.

Route Complexity 7/10

Demanding - plan breaks and stay ahead of the key maneuvers

This is a demanding drive. With 19 significant decision points across 273.5 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: at 0.6 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 0.8 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 191.9 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 19 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

0.6 mi into trip | ~1m in

Keep slight left at fork toward I 30 West, I 35E South

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Toward I 30 West, I 35E South

0.8 mi into trip | ~1m in

Keep slight right at fork toward I 35E South

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight left / slight right lanes. Toward I 35E South

191.9 mi into trip | ~3h 20m in | I 35; US 290 / Purple Heart Trail

Keep slight left at fork onto I 35; US 290 / Purple Heart Trail toward 32nd Street, Dean Keeton Street

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight left lane. Toward 32nd Street, Dean Keeton Street

271.8 mi into trip | ~4h 50m in | I 35 / North Pan Am Expressway

Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South: Lower Level, Laredo

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight left lane. Toward I 35 South: Lower Level, Laredo

272.3 mi into trip | ~4h 50m in

Take the exit toward Lexington Avenue, Main Avenue, San Pedro Avenue

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight right lane. Exit 157A Toward Lexington Avenue, Main Avenue, San Pedro...

Main Roads

Road	Distance	Duration
Purple Heart Trail	99.6 mi	1h 46m
South R L Thornton Freeway	89.9 mi	1h 32m
I 35	55.8 mi	58m
North Pan Am Expressway	17 mi	20m
North Jack Kultgen Expressway	6.6 mi	7m
Interstate Highway 35	1.7 mi	1m
South Stemmons Freeway	0.8 mi	1m
North Main Avenue	0.6 mi	1m

Longest stretch: Purple Heart Trail — 99.6 mi, about 1h 46m

Turn-by-Turn Driving Directions

Step-by-step road directions between Dallas, TX and San Antonio, TX.

Start on North Lamar Street

0.2 mi · 34 sec · North Lamar Street

Use the none lane.

Turn right onto Elm Street

0.2 mi · 30 sec · Elm Street

Continue on Elm Street

0.1 mi · 14 sec · Elm Street

Take the ramp

327 ft · 7 sec

Toward I 30, I 35E

Keep slight left at fork

0.2 mi · 20 sec

Toward I 30 West, I 35E South Use the straight / slight right lanes.

Keep slight right at fork

330 ft · 8 sec

Toward I 35E South Use the slight left / slight right lanes.

Merge onto I 35E

0.8 mi · 1 min · South Stemmons Freeway

Use the none / straight / slight right lanes.

Continue on I 35E

0.5 mi · 44 sec · South R L Thornton Freeway

Continue on I 35E

89 mi · 1 hr 31 min · South R L Thornton Freeway

Exit 426 Toward Dallas Zoo Use the none lane.

Continue on I 35; US 77

6.6 mi · 7 min · North Jack Kultgen Expressway

Use the none / straight / slight right lanes.

Continue on I 35

38 mi · 39 min · Purple Heart Trail

Use the none lane.

Keep slight left at fork onto I 35

56 mi · 58 min · I 35

Use the none / straight / slight right lanes.

Keep slight left at fork onto I 35; US 290

50 mi · 54 min · Purple Heart Trail

Toward 32nd Street, Dean Keeton Street Use the slight left lane.

Continue on I 35

1.7 mi · 1 min · Interstate Highway 35

Use the none / straight / slight right lanes.

Continue on I 35

12 mi · 12 min · Purple Heart Trail

Use the none lane.

Continue on I 35

10.0 mi · 11 min · North Pan Am Expressway

Use the none / straight / slight right lanes.

Keep slight left at fork onto I 35

6.4 mi · 8 min · North Pan Am Expressway

Toward I 35 South Use the none lane.

Keep slight left at fork onto I 35

0.6 mi · 41 sec · North Pan Am Expressway

Toward I 35 South: Lower Level, Laredo Use the slight left lane.

Take the exit

0.1 mi · 16 sec

Exit 157A Toward Lexington Avenue, Main Avenue, San Pedro Avenue Use the slight right lane.

Turn straight onto East Elmira Street

526 ft · 17 sec · East Elmira Street

Use the left / straight lanes.

Turn left onto North Main Avenue

0.2 mi · 18 sec · North Main Avenue

Use the left / straight lanes.

Enter roundabout onto Navarro Street

159 ft · 3 sec · Navarro Street

Continue on Navarro Street

111 ft · 2 sec · Navarro Street

Keep slight right at fork onto North Main Avenue

0.4 mi · 51 sec · North Main Avenue

Use the slight left / slight right lanes.

Turn right onto West Travis Street

222 ft · 10 sec · West Travis Street

Turn left onto North Flores Street

0.2 mi · 20 sec · North Flores Street

Continue on 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

For the smoothest experience, plan your departure to avoid peak traffic congestion often found near the major urban centers at either end of the route. Since the drive is under five hours, a single planned stop is sufficient to keep you refreshed and alert. Keep a close eye on your fuel gauge during the longer stretches to ensure you aren't caught off guard between service points. Because this is a one-day trip, you have the flexibility to adjust your start time based on your personal preference for morning or afternoon driving. Remember that the 99.6-mile stretch on the Purple Heart Trail is your best opportunity to make significant time before hitting potential city-bound traffic.

Morning Departure

An early start around 7-8 AM gets you there with plenty of daylight left.

Evening Departure

A late afternoon start means arriving after dark. Morning is better.

You can normally do this drive in one day.

Plan roughly 1 meaningful break for fuel, food, and rest.

The halfway point lands around 136.7 miles from Dallas, TX, or about 2h 22m into the drive.

The longest continuous stretch on this route runs about 99.6 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 80 miles or 1h 23m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 136.7 miles or 2h 22m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 3h 56m

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 Dallas, 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 Dallas, TX

This is one driving day of about 273.5 miles and 4h 53m.

Your first comfortable stop window is around 80 miles from Dallas, TX.

This route can stay practical as a one-day drive if traffic stays reasonable.

Plan about 1 real break rather than only quick fuel stops.

The longest stretch is on Purple Heart Trail for about 99.6 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 136.7 mi from Dallas, TX · 2h 22m into the drive

Mid-route town

Meal stop

Killeen, TX

137 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

Killeen, TX

Fuel and coffee

A short stop after about 80 miles helps settle the day before fatigue starts building.

Killeen, TX

Meal break

The midpoint is around 136.7 miles from Dallas, TX, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before Purple Heart Trail if your tank is already low. That segment runs about 99.6 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.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$41.78 one way

$83.56 round trip

$3.88/gal 25.4 MPG avg 96 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.25	$45.78	$91.57
premium	$4.59	$49.43	$98.87
diesel	$5.64	$60.76	$121.52

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$42

Meals

$25–$50

Total

$67–$92

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 95.7 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $29 in charging · 1 stop · 67% less CO₂

Vehicle Type	kWh	Stops	DC Fast	Home Charge
Average EV	82.1	1	$28.72	$13.13
Efficient EV	68.4	0	$23.93	$10.94
EV Truck/SUV	109.4	1	$38.29	$17.50

Gas CO2

96 kg

EV CO2

32 kg (67% less)

Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.

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 data refreshed 3 days ago

Origin

Dallas, TX

Afternoon in Dallas on Sunday

Local time

3:52 PM

CDT

Current temp

61°F

Unavailable

Live forecast

Destination

San Antonio, TX

Afternoon in San Antonio on Sunday

Local time

3:52 PM

CDT

Current temp

81°F

Unavailable

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

20 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

4h 53m on the road

An early start around 7-8 AM gets you there with plenty of daylight left.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

Frequently Asked Questions

The drive from Dallas, TX to San Antonio, TX covers 273.5 miles and takes about 4h 53m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Purple Heart Trail, South R L Thornton Freeway, I 35. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 136.7 miles from Dallas, TX. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $41.78 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.

Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

The route from Dallas, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.

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Return Trip

San Antonio, TX to Dallas, TX

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273.5 mi 4h 53m

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Trip from Dallas, TX to San Antonio, TX

Best Time to Leave

Trip Overview

Drive Character

How Hard Is This Drive?

Critical Maneuvers

Main Roads

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Arriving in San Antonio, TX

Fuel & Cost

Travel Intel

Dallas, TX

San Antonio, TX

Same local time

20 degrees warmer at arrival

4h 53m on the road

Frequently Asked Questions

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