Lake Worth, TX to San Antonio, TX is 278.6 miles and takes about 5h 1m via I 35, with a fuel budget near $42 and enough daylight to finish in a day. This is a straightforward drive primarily through the Great Plains region, connecting two Texas cities. Expect a mixed drive profile, meaning you'll encounter both faster highway sections and potentially some slower stretches. With a recommended one-day drive, this route is ideal for those looking for an efficient way to travel between these points without needing an overnight stay. It's a practical choice for a weekend trip or a quick transfer.
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
139.3 miles from Lake Worth, TX
A natural place for your longest stop of the day
, about 2h 28m into the drive
.
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.
Doable as a same-day drive at 5h 1m. Total distance: 278.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 1m drive, comfortable solo distance.
Drive Character
This route features a 60% highway share, indicating a significant portion will be on faster-paced roads like I 35. You'll experience a mixed drive, so be prepared for variations in road type and speed limits. The longest uninterrupted stretch you'll encounter is 99.6 miles on the Purple Heart Trail, so plan for a substantial period of consistent driving. While much of the journey is on major arteries, the 'mixed drive' profile suggests you might transition onto different road types as you approach your destination. Overall, it's a functional drive designed for covering ground efficiently.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 31 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 route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 17.6 miles in.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 21 significant decision points across 278.6 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 17.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 18.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 197 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 21 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
8
17.6 mi into trip|~21m in
Take the exit toward I 35W: Denton, Waco
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 437
Toward I 35W: Denton, Waco
7
18.1 mi into trip|~21m in
Keep slight right at fork toward I 35W South: Waco
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 35W South: Waco
8
197 mi into trip|~3h 29m 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
8
276.8 mi into trip|~4h 58m 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
8
277.4 mi into trip|~4h 59m 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...
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Lake Worth, TX to San Antonio, TX, road signs begin pointing toward Waco along the way.
Step-by-step road directions between Lake Worth, TX and San Antonio, TX.
1
Start on Osage Trail
0.1 mi·31 sec·Osage Trail
2
Turn right onto Shawnee Trail
0.4 mi·1 min·Shawnee Trail
3
Turn left onto Navajo Trail
508 ft·14 sec·Navajo Trail
4
Turn right
140 ft·6 sec
5
Turn slight right onto Northwest Loop 820
189 ft·3 sec·Northwest Loop 820
6
Take the ramp
0.2 mi·25 sec
Toward I 820 West
7
Merge onto I 820
8.8 mi·10 min·Jim Wright Freeway
Use the straight / slight right lanes.
8
Merge onto I 20
8.0 mi·8 min·Ronald Reagan Memorial Highway
Use the straight / slight right lanes.
9
Take the exit
0.4 mi·53 sec
Exit 437Toward I 35W: Denton, WacoUse the straight / slight right lanes.
10
Keep slight right at fork
0.5 mi·1 min
Toward I 35W South: WacoUse the slight right lane.
11
Merge onto I 35W
78 mi·1 hr 20 min·South Freeway
Use the straight / slight right lanes.
12
Continue on I 35; US 77
6.6 mi·7 min·North Jack Kultgen Expressway
Use the straight / slight right lanes.
13
Continue on I 35
38 mi·39 min·Purple Heart Trail
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 35
56 mi·58 min·I 35
Use the straight / slight right lanes.
15
Keep slight left at fork onto I 35; US 290
50 mi·54 min·Purple Heart Trail
Toward 32nd Street, Dean Keeton StreetUse the slight left lane.
16
Continue on I 35
1.7 mi·1 min·Interstate Highway 35
Use the straight / slight right lanes.
17
Continue on I 35
12 mi·12 min·Purple Heart Trail
Use the straight / slight right lanes.
18
Continue on I 35
10.0 mi·11 min·North Pan Am Expressway
Use the straight / slight right lanes.
19
Keep slight left at fork onto I 35
6.4 mi·8 min·North Pan Am Expressway
Toward I 35 SouthUse the straight / slight right lanes.
20
Keep slight left at fork onto I 35
0.6 mi·41 sec·North Pan Am Expressway
Toward I 35 South: Lower Level, LaredoUse the slight left lane.
21
Take the exit
0.1 mi·16 sec
Exit 157AToward Lexington Avenue, Main Avenue, San Pedro AvenueUse the slight right lane.
22
Turn straight onto East Elmira Street
526 ft·17 sec·East Elmira Street
Use the left / straight lanes.
23
Turn left onto North Main Avenue
0.2 mi·18 sec·North Main Avenue
Use the left / straight lanes.
24
Enter roundabout onto Navarro Street
159 ft·3 sec·Navarro Street
25
Continue on Navarro Street
111 ft·2 sec·Navarro Street
26
Keep slight right at fork onto North Main Avenue
0.4 mi·51 sec·North Main Avenue
Use the slight left / slight right lanes.
27
Turn right onto West Travis Street
222 ft·10 sec·West Travis Street
28
Turn left onto North Flores Street
0.2 mi·20 sec·North Flores Street
29
Continue on Military Plaza
392 ft·15 sec·Military Plaza
30
Turn left onto Dolorosa Street
327 ft·8 sec·Dolorosa Street
31
Arrive at destination
Dolorosa Street
Trip Plan
Given the 5-hour duration, departing in the morning allows ample time to reach San Antonio before evening. You'll want to pace your stops, as the longest stretch without a change in road type is nearly 100 miles. Consider a mid-drive break to refuel, especially since the estimated fuel cost is $42, implying a need to keep an eye on your tank. Since this is a one-day trip, you have the flexibility to leave a bit later if desired, but be mindful of potential traffic as you get closer to San Antonio. A practical tip is to download offline maps, as cell service can be spotty on certain stretches of the Purple Heart Trail.
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 139.3 miles from Lake Worth, TX, or about 2h 28m 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 61 miles or 1h 7m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 139.3 miles or 2h 28m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 3m
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 Lake Worth, 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 Lake Worth, TX
This is one driving day of about 278.6 miles and 5h 1m.
Your first comfortable stop window is around 61 miles from Lake Worth, 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 139.3 mi from Lake Worth, TX
· 2h 28m into the drive
Place data sourced from public business listings. Hours and availability may vary.
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...
4 mi from route
~10 min detour
Free
near mile 96.1
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 278.6
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$42.10 one way
$84.19 round trip
$3.84/gal25.4 MPG avg98 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$46.08
$92.16
premium
$4.54
$49.74
$99.48
diesel
$5.61
$61.51
$123.02
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: 97.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $29 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
83.6
1
$29.25
$13.37
Efficient EV
69.7
0
$24.38
$11.14
EV Truck/SUV
111.4
1
$39.00
$17.83
Gas CO2
97 kg
EV CO2
33 kg (66% 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 Apr 18, 2026
Origin
Lake Worth, TX
Morning
in Lake Worth on Saturday
Local time
8:09 AM
CDT
Current temp
59°F
Unavailable
Live forecast
Destination
San Antonio, TX
Morning
in San Antonio on Saturday
Local time
8:09 AM
CDT
Current temp
68°F
Mostly Cloudy
SSE 5 to 15 mph1% chanceLive forecast
Freeze Watch
Freeze Watch issued April 17 at 7:58PM CDT until April 19 at 10:00AM CDT by NWS Amarillo TX
Freeze Watch
Freeze Watch issued April 17 at 7:58PM CDT until April 19 at 10:00AM CDT by NWS Amarillo TX
60°F
Belton, TX
139 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
9 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
5h 1m 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 Lake Worth, TX to San Antonio, TX covers 278.6 miles and takes about 5h 1m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Purple Heart Trail, South Freeway, I 35. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 139.3 miles from Lake Worth, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $42.10 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.
This is a demanding drive. With 21 significant decision points across 278.6 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.
The main spots that need attention: at 17.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 18.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 197 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from Lake Worth, TX to San Antonio, TX, road signs begin pointing toward Waco along the way.
Yes. Nearby national parks include Waco Mammoth National Monument and San Antonio Missions National Historical Park.
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, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
