Origin
San Carlos, TX
Evening in San Carlos on Thursday
Local time
7:58 PM
CDT
Current temp
70°F
Unavailable
Live forecast
Trip from San Carlos, TX to Houston, TX
Last recalculated Apr 17, 2026
Drive Time
6h 38m
Distance
343.1 mi
552 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$52
one way
EV Charging
Unknown
Best Time to Leave
4 AM
6h 26m
★
6 AM
6h 39m
8 AM
7h 3m
10 AM
6h 47m
12 PM
6h 45m
3 PM
6h 48m
5 PM
7h 1m
8 PM
6h 31m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
San Carlos, TX
Fer Strange
Houston, TX
Trace Hudson
Trip Overview
The drive from San Carlos, TX to Houston, TX covers 343.1 miles and takes about 6h 38m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 69C, US Highway 59 South, US 77 for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 96.7 miles on I 69C. At current regular gas prices, budget about $51.84 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
171.6 miles from San Carlos, TX
A natural place for your longest stop of the day , about 3h 16m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 38m. Total distance: 343.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 38m drive, plan rest stops for pacing.
Drive Character
This is a 6h 38m highway drive covering 343.1 miles, with most of the trip on I 69C and US Highway 59 South. The longest continuous stretch is about 96.7 miles on I 69C.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 38 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 69C is the longest continuous segment at about 96.7 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 69C and US Highway 59 South. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 4.7 miles in.
Driving Effort
10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 23 significant decision points across 343.1 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 4.7 miles: Multiple destination signs - pick the right one; at 5 miles (I 69C; US 281): Merge point - match speed before joining. Lane positioning matters here; at 133 miles (North US Highway 77): Lane positioning matters here.
Critical Maneuvers
5 of 23 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
4.7 mi into trip
|
~6m in
Take the ramp toward I 69C North, US 281 North
Multiple destination signs - pick the right one
Toward I 69C North, US 281 North
5
5 mi into trip
|
~7m in
|
I 69C; US 281
Merge onto I 69C; US 281
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
5
133 mi into trip
|
~2h 30m in
|
North US Highway 77
Turn left onto North US Highway 77
Lane positioning matters here
Use the left lane.
8
340.3 mi into trip
|
~6h 32m in
Keep slight left at fork toward Richmond Avenue, Downtown via Louisiana Street
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward Richmond Avenue, Downtown via Louisiana...
7
341.2 mi into trip
|
~6h 33m in
Take the exit toward Downtown, Louisiana 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.
Toward Downtown, Louisiana Street
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between San Carlos, TX and Houston, TX, road signs point toward County Road 44, Sinton and Victoria.
County Road 44
134 mi in
|
~2h 33m
Sinton
141.2 mi in
|
~2h 40m
|
via US 77
Victoria
141.2 mi in
|
~2h 40m
|
via US 77
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 69C | 96.7 mi | 1h 44m |
| US Highway 59 South | 88.6 mi | 1h 38m |
| US 77 | 37.6 mi | 44m |
| United States Highway 77 | 33 mi | 37m |
| Southwest Freeway | 32.6 mi | 37m |
| East Main Street | 26.2 mi | 30m |
| U.S. Highway 77 | 4.7 mi | 5m |
| US 281 Business | 2.2 mi | 3m |
Longest stretch:
I 69C
— 96.7 mi, about 1h 44m
Turn-by-Turn Driving Directions
Step-by-step road directions between San Carlos, TX and Houston, TX.
1
Start on TX 107
1.2 mi
·
1 min
·
TX 107
2
Turn right onto FM 2128
0.9 mi
·
1 min
·
Richardson Road
3
Continue on FM 2128
0.5 mi
·
40 sec
·
East Schunior Street
4
Continue on FM 2128
0.8 mi
·
1 min
·
East Richardson Street
5
Continue on FM 2128
1.2 mi
·
1 min
·
East Richardson Road
6
Turn right onto North Expressway 281
181 ft
·
3 sec
·
North Expressway 281
7
Take the ramp
0.3 mi
·
35 sec
Toward I 69C North, US 281 North
8
Merge onto I 69C; US 281
71 mi
·
1 hr 15 min
·
I 69C; US 281
Use the straight / slight right lanes.
9
Keep slight right at fork onto I 69C; US 281
25 mi
·
28 min
·
I 69C; US 281
10
Take the exit
0.4 mi
·
1 min
11
Continue on US 281 Business
2.2 mi
·
3 min
·
US 281 Business
12
Turn right onto FM 1352
0.5 mi
·
57 sec
·
Cecilia Street
13
Turn left onto FM 665
345 ft
·
7 sec
·
Old Kingsville Road
14
Turn slight right onto FM 665
1.3 mi
·
2 min
·
South Cameron Street
15
Turn right onto TX 44; TX 359
452 ft
·
5 sec
·
East Front Street
16
Continue on TX 44; TX 359
26 mi
·
30 min
·
East Main Street
Use the straight lane.
17
Take the exit onto TX 44
0.6 mi
·
1 min
·
TX 44
18
Turn left onto North US Highway 77
1.0 mi
·
2 min
·
North US Highway 77
Use the left lane.
19
Take the ramp
0.2 mi
·
30 sec
Toward County Road 44
20
Merge onto I 69E; US 77
4.7 mi
·
5 min
·
U.S. Highway 77
21
Merge onto I 37; US 77; I 69E
1.4 mi
·
1 min
·
I 37; US 77; I 69E
22
Keep slight left at fork
0.8 mi
·
50 sec
23
Continue on I 37; US 77; I 69E
463 ft
·
5 sec
·
I 37; US 77; I 69E
24
Take the exit onto US 77
38 mi
·
44 min
·
US 77
Toward Sinton, Victoria
25
Turn slight right onto US 77
33 mi
·
37 min
·
United States Highway 77
26
Keep slight left at fork onto Spur 91
1.5 mi
·
1 min
·
Spur 91
27
Merge onto US 59
89 mi
·
1 hr 38 min
·
US Highway 59 South
28
Take the exit
0.3 mi
·
37 sec
29
Continue on 59 Northbound Frontage Road
1.6 mi
·
2 min
·
59 Northbound Frontage Road
30
Continue on this road
0.4 mi
·
58 sec
·
this road
31
Continue on US 59 Northbound Frontage Road
2.0 mi
·
4 min
·
US 59 Northbound Frontage Road
32
Continue on Southwest Freeway Frontage Road
1.3 mi
·
2 min
·
Southwest Freeway Frontage Road
33
Take the ramp
0.2 mi
·
31 sec
Toward I 69 North, US 59 North
34
Merge onto I 69; US 59
33 mi
·
37 min
·
Southwest Freeway
Use the straight / slight right lanes.
35
Keep slight left at fork
0.9 mi
·
1 min
Toward Richmond Avenue, Downtown via Louisiana Street
Use the slight left lane.
36
Take the exit
155 ft
·
3 sec
Toward Downtown, Louisiana Street
Use the straight / slight right lanes.
37
Continue on Louisiana Street
1.9 mi
·
4 min
·
Louisiana Street
Use the straight / left lanes.
38
Arrive at destination
Louisiana Street
Trip Plan
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 171.6 miles from San Carlos, TX, or about 3h 16m into the drive.
The longest continuous stretch on this route runs about 96.7 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 75 miles or 1h 21m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 171.6 miles or 3h 16m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 21m
Traffic, exits, and arrival timing usually matter more near Houston, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving San Carlos, 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 San Carlos, TX
This is one driving day of about 343.1 miles and 6h 38m.
Your first comfortable stop window is around 75 miles from San Carlos, 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 I 69C for about 96.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 171.6 mi from San Carlos, TX · 3h 16m into the drive
Mid-route town
Meal stop
172 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 75 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 171.6 miles from San Carlos, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 69C if your tank is already low. That segment runs about 96.7 miles.
Arriving in Houston, TX
The final approach into Houston, 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 Houston, 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
$51.84 one way
$103.69 round trip
$3.84/gal
25.4 MPG avg
120 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $56.75 | $113.49 |
| premium | $4.54 | $61.26 | $122.52 |
| diesel | $5.61 | $75.75 | $151.50 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$52
Meals
$25–$50
Total
$77–$102
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 120 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $36 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 102.9 | 1 | $36.03 | $16.47 |
| Efficient EV | 85.8 | 0 | $30.02 | $13.72 |
| EV Truck/SUV | 137.2 | 1 | $48.03 | $21.96 |
Gas CO2
120 kg
EV CO2
40 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.
Destination
Houston, TX
Evening in Houston on Thursday
Local time
7:58 PM
CDT
Current temp
79°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
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
6h 38m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from San Carlos, TX to Houston, TX covers 343.1 miles and takes about 6h 38m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 69C, US Highway 59 South, US 77. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 171.6 miles from San Carlos, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $51.84 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
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 23 significant decision points across 343.1 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 4.7 miles: Multiple destination signs - pick the right one; at 5 miles (I 69C; US 281): Merge point - match speed before joining. Lane positioning matters here; at 133 miles (North US Highway 77): Lane positioning matters here.
Between San Carlos, TX and Houston, TX, road signs point toward County Road 44, Sinton and Victoria.
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