Origin
Alvin, TX
Late night in Alvin on Tuesday
Local time
4:01 AM
CDT
Current temp
84°F
Unavailable
Live forecast
Trip from Alvin, TX to San Antonio, TX
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
4h 2m
Distance
221 mi
356 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$33
one way
EV Charging
Unknown
Best Time to Leave
4 AM
3h 49m
★
6 AM
4h 2m
8 AM
4h 28m
10 AM
4h 11m
12 PM
4h 9m
3 PM
4h 13m
5 PM
4h 27m
8 PM
3h 54m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Alvin, TX
Thomas balabaud
San Antonio, TX
Wikimedia Commons
Trip Overview
Alvin, TX to San Antonio, TX is 221 miles and takes about 4 hours and 2 minutes via Katy Freeway and I-10, with a fuel budget near $33 and enough daylight to finish in a day. This is a highway-focused drive primarily through the Great Plains region of Texas, making for a straightforward trip. With only one recommended stop and a highway share of 88%, you can expect a consistent pace for most of the journey. It’s a practical choice if you’re looking for an efficient drive between these two Texas cities without much fuss.
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
110.5 miles from Alvin, TX
A natural place for your longest stop of the day , about 2h 4m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Katy Freeway | 161.7 mi | 2h 45m |
| I 10 | 12 mi | 12m |
| South Sam Houston Tollway West | 10.3 mi | 11m |
| West State Highway 6 | 10 mi | 15m |
| West Sam Houston Tollway South | 7 mi | 7m |
| Brazoria County Expressway | 5.5 mi | 6m |
| East Commerce Street | 4.3 mi | 7m |
| South Sam Houston Parkway West | 1.9 mi | 2m |
Longest stretch:
Katy Freeway
— 161.7 mi, about 2h 45m
Turn-by-Turn Driving Directions
Step-by-step road directions between Alvin, TX and San Antonio, TX.
1
Start on West Sealy Street
8 ft
·
7 sec
·
West Sealy Street
2
Turn left onto TX 35 Bus
0.4 mi
·
39 sec
·
North Gordon Street
3
Turn left onto TX 6
10 mi
·
15 min
·
West State Highway 6
4
Take the ramp
0.4 mi
·
50 sec
Toward TX 288 North
5
Merge onto TX 288
1.9 mi
·
2 min
·
Nolan Ryan Expressway
6
Continue on TX 288
0.1 mi
·
7 sec
·
South Freeway
7
Keep slight left at fork onto TX 288 Toll
5.1 mi
·
5 min
·
Brazoria County Expressway
8
Take the exit onto Brazoria County Expressway
0.4 mi
·
30 sec
·
Brazoria County Expressway
Toward SHT West, SHT East: Sam Houston Tollway
Use the straight / slight right lanes.
9
Keep slight left at fork
1.0 mi
·
2 min
Toward SHT West: Sam Houston Tollway
Use the slight left lane.
10
Merge onto SHT
10 mi
·
11 min
·
South Sam Houston Tollway West
Use the straight / slight right lanes.
11
Continue on BW 8
1.9 mi
·
2 min
·
South Sam Houston Parkway West
Use the straight / slight right lanes.
12
Continue on SHT
7.0 mi
·
7 min
·
West Sam Houston Tollway South
13
Take the exit
0.3 mi
·
40 sec
Toward I 10 West, I 10 East: San Antonio, Downtown
Use the slight right lane.
14
Keep slight left at fork
1.0 mi
·
2 min
Toward I 10 West: San Antonio
Use the slight left lane.
15
Merge onto I 10; US 90
162 mi
·
2 hr 45 min
·
Katy Freeway
Use the straight / slight right lanes.
16
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.
17
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.
18
Continue on I 10; US 90
1.6 mi
·
1 min
·
Jose Lopez Freeway
Use the straight / slight right lanes.
19
Take the exit
0.1 mi
·
19 sec
Exit 579
Toward Commerce Street, Houston Street
Use the straight / slight right lanes.
20
Turn straight onto Interstate 10 East
0.3 mi
·
38 sec
·
Interstate 10 East
21
Turn right onto East Houston Street
0.2 mi
·
20 sec
·
East Houston Street
22
Turn slight left onto East Commerce Street
4.3 mi
·
7 min
·
East Commerce Street
23
Turn left onto Military Plaza
392 ft
·
15 sec
·
Military Plaza
24
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
25
Arrive at destination
Dolorosa Street
Trip Plan
Given the 4-hour duration, leaving Alvin, TX in the morning is ideal to ensure you reach San Antonio with plenty of daylight. With only one recommended stop and a mostly highway profile, you have the flexibility to make it a direct journey or add a brief pause as needed. The fuel cost is estimated at around $33, so ensure your tank is full before heading out. A specific tip for this route: pay attention to variable speed limits on I-10 as you get closer to San Antonio, as they can change frequently.
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 110.5 miles from Alvin, TX, or about 2h 4m into the drive.
The longest continuous stretch on this route runs about 161.7 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 49 miles or 1h 1m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 110.5 miles or 2h 4m 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 17m
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 Alvin, 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 Alvin, TX
This is one driving day of about 221 miles and 4h 2m.
Your first comfortable stop window is around 49 miles from Alvin, 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 161.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
111 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 49 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 110.5 miles from Alvin, 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 161.7 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 165 decision points cluster between mile 17.9 and 215.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
17.9 mi into trip
|
~24m in
|
Brazoria County Expressway
Take the exit onto Brazoria County Expressway toward SHT West, SHT East: Sam Houston Tollway
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 SHT West, SHT East: Sam Houston Tollway
7
18.3 mi into trip
|
~25m in
Keep slight left at fork toward SHT West: Sam Houston Tollway
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward SHT West: Sam Houston Tollway
7
38.4 mi into trip
|
~49m in
Take the exit toward I 10 West, I 10 East: San Antonio, Downtown
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 10 West, I 10 East: San Antonio, Downt...
7
38.7 mi into trip
|
~50m in
Keep slight left at fork toward I 10 West: San Antonio
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 10 West: San Antonio
8
215.9 mi into trip
|
~3h 53m 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
Fuel & Cost
Regular Gas
$33.39 one way
$66.79 round trip
$3.84/gal
25.4 MPG avg
77 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $36.55 | $73.10 |
| premium | $4.54 | $39.46 | $78.92 |
| diesel | $5.61 | $48.79 | $97.59 |
Estimated Tolls: $1.39
Sam Houston Tollway
(17.3 mi)
$1.39
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$33
Tolls
$1
Meals
$25–$50
Total
$60–$85
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 77.3 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $23 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 66.3 | 0 | $23.21 | $10.61 |
| Efficient EV | 55.3 | 0 | $19.34 | $8.84 |
| EV Truck/SUV | 88.4 | 1 | $30.94 | $14.14 |
Gas CO2
77 kg
EV CO2
26 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.
Destination
San Antonio, TX
Late night in San Antonio on Tuesday
Local time
4:01 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
14 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 2m 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.
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 221
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
Expect a highway-focused experience on this 221-mile trip, with 88% of the drive utilizing major highways like the Katy Freeway and I-10. The longest uninterrupted stretch you'll encounter is a significant 161.7 miles on the Katy Freeway, so settle in for some extended cruising. While the profile is largely highway, keep an eye out for the transition as you approach San Antonio. This route is designed for steady progress, minimizing complex navigation and maximizing your time on the open road.
88% highway — fuel and pacing are the main things to plan.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 161.7 mi on Katy Freeway.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on Katy Freeway and I 10. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 17.9 miles in near Brazoria County Expressway.
Driving Effort
9/10
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 16 significant decision points across 221 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 17.9 miles (Brazoria County Expressway): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 18.3 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 38.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Alvin, TX and San Antonio, TX, road signs point toward Sht West, Sht East: Sam Houston Tollway, Sht West: Sam Houston Tollway and Downtown.
Sht West
17.9 mi in
|
~24m
|
via Brazoria County Expressway
Sht East: Sam Houston Tollway
17.9 mi in
|
~24m
|
via Brazoria County Expressway
Sht West: Sam Houston Tollway
18.3 mi in
|
~25m
Downtown
38.4 mi in
|
~49m
About the Cities
Starting in Alvin, TX
Full guide →Founded 1893
Alvin is in the Gulf Coast of Texas. Home of the Pitcher Nolan Ryan. It's about 20 miles southeast of Houston, at the intersections of SH-35 and SH-6.
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 in San Antonio — 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
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 2m. Total distance: 221 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 2m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (88%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 161.7 miles on Katy Freeway. The full list of main roads is in the Roads section above.
Expect about $1.39 in tolls one way, starting with Sam Houston Tollway. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 17.9 miles (Brazoria County Expressway): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 18.3 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 38.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — San Antonio Missions National Historical Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.0 hours each way, an in-and-out day trip would put you behind the wheel for 8.1 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, and NPS for national parks. See our methodology for refresh cadence and limitations.
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