The drive from San Antonio, TX to Las Lomas, TX covers 263.3 miles and takes about 4h 50m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Purple Heart Trail, United States Highway 83, North Grant Street for much of the mileage,
and the overall profile is mixed drive.
The longest uninterrupted segment is about 144.4 miles on Purple Heart Trail.
At current regular gas prices, budget about $39.79 one way before food or hotel costs.
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
131.7 miles from San Antonio, TX
A natural place for your longest stop of the day
, about 2h 17m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 50m. Total distance: 263.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Mixed drive route profile with national parks nearby.
Drive Character
The drive from San Antonio, TX to Las Lomas, TX covers 263.3 miles and takes about 4h 50m, using a mix of highways and local roads.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 26 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 144.4 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.2 miles in near Navarro Street.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 50m drive. You will face about 10 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (Navarro Street): Navigation decision point; at 0.3 miles (East Commerce Street): Navigation decision point; at 1.4 miles (Guadalupe Street): Navigation decision point.
Critical Maneuvers
5 of 10 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
5
0.2 mi into trip|~0m in|Navarro Street
Turn left onto Navarro Street
Navigation decision point
4
0.3 mi into trip|~0m in|East Commerce Street
Turn left onto East Commerce Street
Navigation decision point
4
1.4 mi into trip|~3m in|Guadalupe Street
Turn right onto Guadalupe Street
Navigation decision point
6
1.5 mi into trip|~3m in
Take the ramp toward I 35 South, I 10 East
Multiple destination signs - pick the right one
Toward I 35 South, I 10 East
7
1.7 mi into trip|~3m in|I 10; US 87 / South Pan Am Expressway
Merge onto I 10; US 87 / South Pan Am Expressway toward I 10 East, US 87 South: Upper Level, Houston
Merge point - match speed before joining. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 10 East, US 87 South: Upper Level, Hou...
Place data sourced from public business listings. Hours and availability may vary.
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...
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$39.79 one way
$79.57 round trip
$3.84/gal25.4 MPG avg92 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$43.55
$87.10
premium
$4.54
$47.01
$94.02
diesel
$5.61
$58.13
$116.27
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$40
Meals
$25–$50
Total
$65–$90
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 92.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $28 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
79
0
$27.65
$12.64
Efficient EV
65.8
0
$23.04
$10.53
EV Truck/SUV
105.3
1
$36.86
$16.85
Gas CO2
92 kg
EV CO2
31 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 16, 2026
Origin
San Antonio, TX
Late night
in San Antonio on Friday
Local time
4:40 AM
CDT
Current temp
90°F
Partly Sunny
SSE 10 mph0% chanceLive forecast
Destination
Las Lomas, TX
Late night
in Las Lomas on Friday
Local time
4:40 AM
CDT
Current temp
70°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 cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 50m 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 San Antonio, TX to Las Lomas, TX covers 263.3 miles and takes about 4h 50m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Purple Heart Trail, United States Highway 83, North Grant Street. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 131.7 miles from San Antonio, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $39.79 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 straightforward 4h 50m drive. You will face about 10 decision points, but nothing that requires special attention if you follow navigation.
The main spots that need attention: at 0.2 miles (Navarro Street): Navigation decision point; at 0.3 miles (East Commerce Street): Navigation decision point; at 1.4 miles (Guadalupe Street): Navigation decision point.
The route from San Antonio, TX to Las Lomas, TX does not surface many named destination signs beyond the main corridor.
Yes. Nearby national parks include San Antonio Missions National Historical Park.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from
OSRM
over
OpenStreetMap.
Fuel cost uses
EIA
weekly regional averages.
National park proximity is from the
NPS API.
Pages are published only after passing our data-quality checks; our
methodology page
documents refresh cadence, editorial standards, and known limitations.
