Trip from Dallas, 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 Oct 22, 2026 · Editorial standards

Drive Time

4h 53m

Distance

273.5 mi

440 km

Drive Score

9/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$41

one way

EV Charging

Unknown

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

Wikimedia Commons

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 .

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

Traffic on I-35

Hour-of-day weekday pattern from 96 FHWA count stations on your route.

Peak

4 PM

~3,999 veh/hr typical · worst 4,742

Quietest

2 AM

~661 veh/hr

Peak-to-quiet ratio

6×

busier at peak than in the quiet hours

12a 6a noon 6p 11p

Averaged across 104 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).

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

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 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 straight / slight right lanes.

Continue on I 35; US 77

6.6 mi · 7 min · North Jack Kultgen Expressway

Use the straight / slight right lanes.

Continue on I 35

38 mi · 39 min · Purple Heart Trail

Use the straight / slight right lanes.

Keep slight left at fork onto I 35

56 mi · 58 min · I 35

Use the 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 straight / slight right lanes.

Continue on I 35

12 mi · 12 min · Purple Heart Trail

Use the straight / slight right lanes.

Continue on I 35

10.0 mi · 11 min · North Pan Am Expressway

Use the 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 straight / slight right lanes.

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 60 miles or 1h 3m 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 60 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.

Mid-route town

Meal stop

Troy, 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

Italy, TX

Fuel and coffee

A short stop after about 60 miles helps settle the day before fatigue starts building.

Troy, 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

Hours: 9 am–10 pm

Visit website

SEA LIFE San Antonio

4.1 ★ ★ ★ ★ ☆

Near the end, right off the route

Home stretch 0.4 mi from route ~1 min detour

San Antonio, Texas

Hours: 10 am–5 pm

+12106101160

Visit website

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

Heads-up: tricky spots

5 of 18

5 decision points cluster between mile 0.6 and 272.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

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...

Fuel & Cost

Regular Gas

$41.06 one way

$82.11 round trip

$3.81/gal 25.4 MPG avg 96 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.22	$45.43	$90.86
premium	$4.57	$49.15	$98.31
diesel	$6.28	$67.58	$135.16

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$41

Meals

$25–$50

Total

$66–$91

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, 2026-10-19.

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 as of Oct 19, 2026

Origin

Dallas, TX

Late night in Dallas on Thursday

Local time

5:42 AM

CDT

Current temp

53°F

Mostly Cloudy

0 mph 0% chance Live forecast

Destination

San Antonio, TX

Late night in San Antonio on Thursday

Local time

5:42 AM

CDT

Current temp

55°F

Mostly Cloudy

NE 5 mph 0% chance Live forecast

76°F

Troy, TX

137 mi in

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

2 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.

National Parks Near This Route

Worth a detour if your schedule allows.

Waco Mammoth National Monument

National Monument

Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...

5 mi from route ~12 min detour Free near mile 94.3

View on nps.gov

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...

9 mi from route ~22 min detour Free near mile 273.5

View on nps.gov

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

What kind of drive is this?

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.

63% highway — fuel and pacing are the main things to plan.

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

Longest single stretch: 99.6 mi on Purple Heart Trail.

How Hard Is This Drive?

7/10

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.

Driving Effort 7/10

Demanding - plan breaks and stay ahead of the key maneuvers

Balances navigation complexity with total wheel time.

This is a demanding drive. With 18 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.

Elevation Profile

Gently rolling terrain

926 ft 428 ft

Total Climb

1,191 ft

Total Descent

970 ft

Highest Point

926 ft

~156.3 mi in

Elevation Range

498 ft

About the Cities

Starting in Dallas, TX

Full guide →

“Big D” · Founded 1841

Dallas, with a population of more than 1.3 million residents, is the ninth largest city in the United States and the third largest in the state of Texas. It is an impressive melting pot of culture and character. Boasting high-end luxury hotels, innumerable fine dining spots, and one of the busiest airports in the world, Dallas maintains an upscale ethos reflected by an affluent population, world-class museums, and a shimmering modern skyline. Its history was marred by the infamous assassination of U.S. President John F. Kennedy, but there is more historic and contemporary heritage to be discovered in the city. As a center of the oil and cotton industries in the late 1800s and early 1900s, Dallas was a classic American boom town and remains one of the fastest growing cities in the nation.

Top landmarks

• Dallas Museum of Art — art museum in Dallas, Texas
• Texas School Book Depository — building in Dallas, Texas, United States
• George W. Bush Presidential Center — Presidential library and museum for U.S. President George W. Bush, located in Da...

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 — 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, United States

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 4h 53m. Total distance: 273.5 miles.

Family Friendly

Moderate complexity with 1 natural rest stops along the way.

Solo Traveler

4h 53m drive, comfortable solo distance.

Frequently Asked Questions

The longest stretch is about 99.6 miles on Purple Heart Trail. The full list of main roads is in the Roads section above.

Yes — we found about 31 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.

It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at San Antonio, TX before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.

Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 31 rest areas along the route for bathroom stops.

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

Possible but tiring. At 4.9 hours each way, an in-and-out day trip would put you behind the wheel for 9.8 hours — manageable with a long break at San Antonio, TX, but most travelers stay overnight.

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, USGS 3DEP for elevation, NPS for national parks, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.

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Explore more options from Dallas, TX or browse trips ending in San Antonio, TX.

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Trip from Dallas, TX to San Antonio, TX

Best Time to Leave

Trip Overview

Main Roads

Traffic on I-35

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Stops Along Your Drive

Bell County Northbound Rest Area

Hill County Northbound Rest Area

Buc-ee's

Flying J Travel Center

Walburg Travel Center & Food Court

Love's Travel Stop

Petro Stopping Centers

Buc-ee's

Service Plaza

QuikTrip

Ascent Travel Center

TA

Flying J Travel Plaza

Pilot Travel Center

Hill County Southbound Rest Area

QuikTrip

Road Ranger

Marlstone Retail Center

Love's Travel Stop

Love's Travel Stop

Buc-ee's

Pilot Travel Center

TA

Service Plaza

Bell County Southbound Rest Area

QuikTrip

Love's Travel Stop

Pilot Travel Center

Service Plaza

Petro Stopping Centers

Pilot Travel Center

Spanish Governor's Palace

GO RIO San Antonio River Cruises

San Antonio | The Saga

Hemisfair

San Antonio Fire Museum

The Amazing Mirror Maze

Austin Bat Tours

SEA LIFE San Antonio

Heads-up: tricky spots

Fuel & Cost

Travel Intel

Dallas, TX

San Antonio, TX

Same local time

2 degrees warmer at arrival

4h 53m on the road

National Parks Near This Route

Waco Mammoth National Monument

San Antonio Missions National Historical Park

What kind of drive is this?

How Hard Is This Drive?

Elevation Profile

About the Cities

Starting in Dallas, TX

Arriving in San Antonio, TX

Who Is This Route For?

Frequently Asked Questions

Which road carries most of the drive?

Are there rest areas on this route?

Should I avoid arriving after dark?

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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