Origin
Katy, TX
Afternoon in Katy on Sunday
Local time
4:16 PM
CDT
Current temp
69°F
Unavailable
Live forecast
Trip from Katy, TX to San Antonio, TX
Drive Time
2h 54m
Distance
166.6 mi
268 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$25
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
2h 43m
★
6 AM
2h 55m
8 AM
3h 17m
10 AM
3h 2m
12 PM
3h 0m
3 PM
3h 3m
5 PM
3h 16m
8 PM
2h 48m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Katy, TX
Action Construction Equipment Ltd. - ACE
San Antonio, TX
Wikimedia Commons
Trip Overview
Connecting Katy to San Antonio is a straightforward 168.9-mile journey that typically takes about 2 hours and 37 minutes. Because this trip is relatively short, it functions perfectly as a day trip, allowing you to reach your destination without needing an overnight stay. You will primarily utilize I-10 West and the Katy Freeway to make your way across the Great Plains. Budgeting approximately $25 for fuel covers the expenses for this direct transit. Whether you are heading out for business or a quick change of scenery, the route is efficient and keeps your travel time manageable.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
83.3 miles from Katy, TX
A natural place for your longest stop of the day , about 1h 25m into the drive .
Drive Character
Expect a turn-heavy local drive as you transition out of the Katy area, shifting into a more consistent pace once you hit the major arteries. While the route involves navigating local roads like Cane Island Parkway, the bulk of your time is spent on I-10 West. Because this is a turn-heavy local drive, you will find it requires more active attention than a simple interstate cruise. The longest stretch you will encounter without turns is 0 miles on Cane Island Parkway, emphasizing the need to stay alert through the initial navigation phases. The personality of this drive is functional and direct rather than a scenic, winding backroad experience.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 16 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Katy Freeway is the longest continuous segment at about 144.7 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Katy Freeway and I 10. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes around 2.4 miles in near I 10 / Katy Freeway.
Route Complexity
6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
This drive requires moderate attention. Across 166.6 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: at 2.4 miles (I 10 / Katy Freeway): Merge point - match speed before joining. Lane positioning matters here; at 147.1 miles (I 10; US 90; TX 130): Highway fork - watch signs carefully. Lane positioning matters here; at 159.2 miles (I 10; US 90; TX 130 / 90th Infantry Division Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 10 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
2.4 mi into trip
|
~4m in
|
I 10 / Katy Freeway
Merge onto I 10 / Katy Freeway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
147.1 mi into trip
|
~2h 30m in
|
I 10; US 90; TX 130
Keep slight left at fork onto I 10; US 90; TX 130
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
159.2 mi into trip
|
~2h 42m in
|
I 10; US 90; TX 130 / 90th Infantry Division Highway
Keep slight left at fork onto I 10; US 90; TX 130 / 90th Infantry Division Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
161.5 mi into trip
|
~2h 45m in
Take the exit toward Commerce Street, Houston Street
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 579
Toward Commerce Street, Houston Street
5
166.6 mi into trip
|
~2h 54m in
|
Dolorosa Street
Turn left onto Dolorosa Street
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Katy Freeway | 144.7 mi | 2h 25m |
| I 10 | 12 mi | 12m |
| East Commerce Street | 4.3 mi | 7m |
| Jose Lopez Freeway | 1.6 mi | 1m |
| Highway Boulevard | 1.3 mi | 2m |
| 90th Infantry Division Highway | 0.8 mi | <1m |
| Cane Island Parkway | 0.6 mi | 1m |
| Interstate 10 East | 0.3 mi | <1m |
Longest stretch:
Katy Freeway
— 144.7 mi, about 2h 25m
Turn-by-Turn Driving Directions
Step-by-step road directions between Katy, TX and San Antonio, TX.
1
Start on US 90
1.3 mi
·
2 min
·
Highway Boulevard
2
Turn left onto Cane Island Parkway
0.5 mi
·
1 min
·
Cane Island Parkway
Use the left / straight lanes.
3
Enter roundabout onto Cane Island Parkway
147 ft
·
2 sec
·
Cane Island Parkway
4
Continue on Cane Island Parkway
152 ft
·
3 sec
·
Cane Island Parkway
5
Take the ramp
0.5 mi
·
1 min
Toward I 10 West
6
Merge onto I 10
145 mi
·
2 hr 25 min
·
Katy Freeway
Use the straight / slight right lanes.
7
Keep slight left at fork onto I 10; US 90; TX 130
12 mi
·
12 min
·
I 10; US 90; TX 130
Use the straight / slight right lanes.
8
Keep slight left at fork onto I 10; US 90; TX 130
0.8 mi
·
51 sec
·
90th Infantry Division Highway
Use the straight / slight right lanes.
9
Continue on I 10; US 90
1.6 mi
·
1 min
·
Jose Lopez Freeway
Use the straight / slight right lanes.
10
Take the exit
0.1 mi
·
19 sec
Exit 579
Toward Commerce Street, Houston Street
Use the straight / slight right lanes.
11
Turn straight onto Interstate 10 East
0.3 mi
·
38 sec
·
Interstate 10 East
12
Turn right onto East Houston Street
0.2 mi
·
20 sec
·
East Houston Street
13
Turn slight left onto East Commerce Street
4.3 mi
·
7 min
·
East Commerce Street
14
Turn left onto Military Plaza
392 ft
·
15 sec
·
Military Plaza
15
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
16
Arrive at destination
Dolorosa Street
Trip Plan
Since this is a quick 168.9-mile trip, you have plenty of flexibility regarding your departure time, though planning for a single stop will help break up the drive comfortably. Keep a close eye on your fuel gauge, as the $25 estimated cost can fluctuate depending on your vehicle's efficiency and local traffic patterns. To make the most of your travel, try to avoid the peak congestion times often found on the Katy Freeway. Because the route is categorized as a turn-heavy local drive, ensure your GPS is updated before you leave to handle the navigation through the initial local segments smoothly. Staying hydrated and keeping your route map handy will ensure you reach San Antonio feeling refreshed.
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.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 83.3 miles from Katy, TX, or about 1h 25m into the drive.
The longest continuous stretch on this route runs about 144.7 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 22m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 83.3 miles or 1h 25m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 19m
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 Katy, 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 Katy, TX
This is one driving day of about 166.6 miles and 2h 54m.
Your first comfortable stop window is around 80 miles from Katy, 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 Katy Freeway for about 144.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 83.3 mi from Katy, TX · 1h 25m into the drive
Mid-route town
Meal stop
83 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
Fuel and coffee
A short stop after about 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 83.3 miles from Katy, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Katy Freeway if your tank is already low. That segment runs about 144.7 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.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$25.45 one way
$50.90 round trip
$3.88/gal
25.4 MPG avg
58 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $27.89 | $55.78 |
| premium | $4.59 | $30.11 | $60.23 |
| diesel | $5.64 | $37.01 | $74.03 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$25
Meals
$25–$50
Total
$50–$75
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 58.3 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $17 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 50 | 0 | $17.49 | $8.00 |
| Efficient EV | 41.7 | 0 | $14.58 | $6.66 |
| EV Truck/SUV | 66.6 | 0 | $23.32 | $10.66 |
Gas CO2
58 kg
EV CO2
19 kg (67% 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.
Destination
San Antonio, TX
Afternoon in San Antonio on Sunday
Local time
4:16 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
12 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
2h 54m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Katy, TX to San Antonio, TX covers 166.6 miles and takes about 2h 54m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Katy Freeway, I 10, East Commerce Street. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 83.3 miles from Katy, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $25.45 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This drive requires moderate attention. Across 166.6 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.
The main spots that need attention: at 2.4 miles (I 10 / Katy Freeway): Merge point - match speed before joining. Lane positioning matters here; at 147.1 miles (I 10; US 90; TX 130): Highway fork - watch signs carefully. Lane positioning matters here; at 159.2 miles (I 10; US 90; TX 130 / 90th Infantry Division Highway): Highway fork - watch signs carefully. Lane positioning matters here.
The route from Katy, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.
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