San Antonio to Westway is 568.6 miles and takes about 9h 17m via I 10 and McDermott Freeway, with a fuel budget near $89 and enough daylight to finish in a day, though it's best split over two days. This long-haul route stays within Texas, traversing the Great Plains region for its entirety. Expect mostly highway driving, making it a straightforward trip for those looking to cover ground efficiently. Given the distance, planning for an overnight stop is advisable to make the drive more comfortable.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
284.3 miles from San Antonio, TX
A natural place for your longest stop of the day
, about 4h 39m into the drive
.
Main Roads
Road
Distance
Duration
I 10
543.1 mi
8h 43m
McDermott Freeway
12.8 mi
14m
Camino Real de Tierra Adentro
8.6 mi
10m
East Fredericksburg Road
1.2 mi
2m
Navarro Street
0.8 mi
1m
San Pedro Avenue
0.6 mi
1m
North Desert Boulevard
0.3 mi
<1m
West Market Street
0.2 mi
<1m
Longest stretch:
I 10
— 543.1 mi, about 8h 43m
Traffic on I-10
Hour-of-day weekday pattern from 44 FHWA count stations on your route.
Peak
4 PM
~1,388 veh/hr typical
· worst 1,773
Quietest
2 AM
~169 veh/hr
Peak-to-quiet ratio
8.2×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio, TX and Westway, TX.
1
Start on Dolorosa Street
143 ft·4 sec·Dolorosa Street
2
Continue on West Market Street
0.2 mi·28 sec·West Market Street
3
Turn left onto Navarro Street
0.8 mi·1 min·Navarro Street
4
Enter roundabout onto San Pedro Avenue
85 ft·1 sec·San Pedro Avenue
5
Continue on San Pedro Avenue
0.5 mi·1 min·San Pedro Avenue
6
Turn left onto West Cypress Street
0.1 mi·10 sec·West Cypress Street
Use the left lane.
7
Turn straight onto East Fredericksburg Road
1.2 mi·2 min·East Fredericksburg Road
8
Turn right onto Interstate 10 West
0.1 mi·13 sec·Interstate 10 West
9
Take the ramp
0.1 mi·13 sec
Toward I 10 West, US 87 North
10
Merge onto I 10; US 87
13 mi·14 min·McDermott Freeway
Use the straight / slight right lanes.
11
Keep slight right at fork onto I 10; US 87
543 mi·8 hr 43 min·I 10; US 87
Use the straight / slight left lanes.
12
Continue on I 10; US 85; US 180
1.1 mi·1 min·Camino Real de Tierra Adentro
13
Keep slight left at fork onto I 10; US 85; US 180
7.5 mi·9 min·Camino Real de Tierra Adentro
Use the straight / slight right lanes.
14
Take the exit
0.2 mi·25 sec
Exit 2Toward Spur 37: Vinton Road, Westway DriveUse the straight / slight right lanes.
15
Turn straight onto North Desert Boulevard
0.3 mi·50 sec·North Desert Boulevard
16
Turn right onto Westway Boulevard
361 ft·14 sec·Westway Boulevard
17
Turn left onto Kingsway Drive
308 ft·16 sec·Kingsway Drive
18
Turn right onto Zinn Road
0.1 mi·24 sec·Zinn Road
19
Arrive at destination
Zinn Road
Trip Plan
For this 9h 17m drive, consider breaking it into two days to avoid fatigue. Leaving San Antonio early in the morning is recommended, especially if you plan to drive the full distance in one go. With 2 planned stops, aim to divide the 568.6 miles roughly in half, stopping around the 280-mile mark. Keep an eye on your fuel levels, as the longest stretch is over 500 miles, and refueling opportunities might be spread out on I 10. Budgeting around $89 for fuel should cover the trip.
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.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 284.3 miles from San Antonio, TX, or about 4h 39m into the drive.
The longest continuous stretch on this route runs about 543.1 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 125 miles or 2h 5m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 284.3 miles or 4h 39m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 284.3 miles or 4h 39m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 8h 15m
Traffic, exits, and arrival timing usually matter more near Westway, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving San Antonio, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from San Antonio, TX
Aim for roughly 284 miles and 4.6 hours of wheel time on this day.
Day 2
Finish the approach into Westway, TX
Aim for roughly 284 miles and 4.6 hours of wheel time on this day.
Your first comfortable stop window is around 125 miles from San Antonio, TX.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 10 for about 543.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 11
5 decision points cluster between mile 1.6 and 567.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
1.6 mi into trip|~3m in|West Cypress Street
Turn left onto West Cypress Street
Lane positioning matters here
Use the left lane.
5
3.1 mi into trip|~5m in
Take the ramp toward I 10 West, US 87 North
Multiple destination signs - pick the right one
Toward I 10 West, US 87 North
6
16.1 mi into trip|~20m in|I 10; US 87
Keep slight right at fork onto I 10; US 87
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight left lanes.
6
560.3 mi into trip|~9h 5m in|I 10; US 85; US 180 / Camino Real de Tierra Adentro
Keep slight left at fork onto I 10; US 85; US 180 / Camino Real de Tierra Adentro
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
567.8 mi into trip|~9h 15m in
Take the exit toward Spur 37: Vinton Road, Westway Drive
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 2
Toward Spur 37: Vinton Road, Westway Drive
Fuel & Cost
Regular Gas
$77.88 one way
$155.76 round trip
$3.48/gal25.4 MPG avg199 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$3.89
$86.99
$173.98
premium
$4.23
$94.58
$189.16
diesel
$4.80
$107.36
$214.72
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$78
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$208–$318
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 198.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $60 in charging
· 2 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
170.6
2
$59.70
$27.29
Efficient EV
142.2
1
$49.75
$22.74
EV Truck/SUV
227.4
2
$79.60
$36.39
Gas CO2
199 kg
EV CO2
67 kg (66% less)
Plan for 2 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 Jul 16, 2026
Origin
San Antonio, TX
Evening
in San Antonio on Saturday
Local time
7:50 PM
CDT
Current temp
86°F
Chance Showers And Thunderstorms
SSE 10 mph39% chanceLive forecast
Flash Flood Warning
Flash Flood Warning issued July 16 at 4:21PM CDT until July 16 at 10:00PM CDT by NWS Austin/San Antonio TX
Flash Flood Warning
Flash Flood Warning issued July 16 at 4:19PM CDT until July 16 at 8:00PM CDT by NWS Austin/San Antonio TX
Destination
Westway, TX
Evening
in Westway on Saturday
Local time
6:50 PM
MDT
Current temp
91°F
Slight Chance Showers And Thunderstorms
E 6 mph15% chanceLive forecast
Flash Flood Warning
Flash Flood Warning issued July 16 at 4:21PM CDT until July 16 at 10:00PM CDT by NWS Austin/San Antonio TX
Flash Flood Warning
Flash Flood Warning issued July 16 at 4:19PM CDT until July 16 at 8:00PM CDT by NWS Austin/San Antonio TX
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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
5 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
9h 17m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
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.
Chamizal National Memorial
National Memorial
Chamizal is more than just an urban park to recreate or enjoy a quiet afternoon. These grounds are a reminder of the harmonious settlement of a 100-year boundary dispute between the United States and...
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...
Lyndon B. Johnson National Historical Park tells the story of our 36th president beginning with his ancestors until his final resting place on his beloved LBJ Ranch. This entire "circle of life" gives...
28 mi from route
~70 min detour
Free
near mile 39.2
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is primarily highway-based, with 98% of the drive on major roads like I 10 and McDermott Freeway. You'll encounter a longest stretch of 543.1 miles on I 10, indicating extended periods of rural cruising. The transition to surface roads will occur near the end of your trip, likely after hundreds of miles on the interstate. Expect a consistent driving experience with minimal changes in road type until the very final leg.
98% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 543.1 mi on I 10.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 10 and McDermott Freeway. You will hit about 11 points where you need to pay attention to lane position or signs. The trickiest moment comes around 1.6 miles in near West Cypress Street.
Driving Effort5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 568.6 miles you will encounter 11 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 1.6 miles (West Cypress Street): Lane positioning matters here; at 3.1 miles: Multiple destination signs - pick the right one; at 16.1 miles (I 10; US 87): Highway fork - watch signs carefully. Lane positioning matters here.
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
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
9h 17m drive, plan rest stops for pacing.
First-Time Driver
Mostly highway driving (98%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 543.1 miles on I 10. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 284 miles on day one.
Yes — we found about 58 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This is a long drive, so arriving tired and in the dark compounds. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Westway, 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 2 meaningful breaks. There are 58 rest areas along the route for bathroom stops.
The main spots that need attention: at 1.6 miles (West Cypress Street): Lane positioning matters here; at 3.1 miles: Multiple destination signs - pick the right one; at 16.1 miles (I 10; US 87): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Chamizal National Memorial, San Antonio Missions National Historical Park and Lyndon B Johnson National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 9.3 hours each way, a round trip means 18.6 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Westway, TX before the return drive.
