Traveling from McGregor to San Antonio covers 189.2 miles and typically takes about 2 hours and 48 minutes of driving time. Because this journey is a straightforward trek across the Great Plains, it is perfectly suited for a single-day trip, allowing you to reach your destination without the need for an overnight stay. Budgeting approximately $28 for fuel will cover your transit costs for the trip. Since the drive is relatively short, you have the flexibility to depart at your convenience. This route keeps you within the Texas Great Plains region, ensuring a consistent landscape as you move toward your southern destination.
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
83.7 miles from McGregor, TX
A natural place for your longest stop of the day
, about 1h 38m into the drive
.
Step-by-step road directions between McGregor, TX and San Antonio, TX.
1
Start on US 84
45 ft·4 sec·West McGregor Drive
2
Turn right onto TX 317
0.2 mi·13 sec·North Lone Star Parkway
3
Continue on TX 317
2.5 mi·3 min·South Main Street
4
Continue on TX 317
5.6 mi·6 min·State Highway 317
5
Continue on TX 317
2.8 mi·5 min·Avenue D
6
Continue on TX 317
1.4 mi·1 min·South Lone Star Parkway
7
Continue on TX 317
13 mi·16 min·State Highway 317
8
Continue on TX 317
2.8 mi·5 min·North Main Street
9
Turn left onto East Central Avenue
0.6 mi·1 min·East Central Avenue
Use the left lane.
10
Turn right onto South I-35 Frontage Road
347 ft·6 sec·South I-35 Frontage Road
11
Take the ramp
0.2 mi·19 sec
Toward I 35 South, US 190 West
12
Merge onto I 35; US 190
0.5 mi·33 sec·Purple Heart Trail
Use the straight / slight right lanes.
13
Keep slight left at fork onto I 35
56 mi·58 min·I 35
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 35; US 290
50 mi·54 min·Purple Heart Trail
Toward 32nd Street, Dean Keeton StreetUse the slight left lane.
15
Continue on I 35
1.7 mi·1 min·Interstate Highway 35
Use the straight / slight right lanes.
16
Continue on I 35
12 mi·12 min·Purple Heart Trail
Use the straight / slight right lanes.
17
Continue on I 35
10.0 mi·11 min·North Pan Am Expressway
Use the straight / slight right lanes.
18
Keep slight left at fork onto I 35
6.4 mi·8 min·North Pan Am Expressway
Toward I 35 SouthUse the straight / slight right lanes.
19
Keep slight left at fork onto I 35
0.6 mi·41 sec·North Pan Am Expressway
Toward I 35 South: Lower Level, LaredoUse the slight left lane.
20
Take the exit
0.1 mi·16 sec
Exit 157AToward Lexington Avenue, Main Avenue, San Pedro AvenueUse the slight right lane.
21
Turn straight onto East Elmira Street
526 ft·17 sec·East Elmira Street
Use the left / straight lanes.
22
Turn left onto North Main Avenue
0.2 mi·18 sec·North Main Avenue
Use the left / straight lanes.
23
Enter roundabout onto Navarro Street
159 ft·3 sec·Navarro Street
24
Continue on Navarro Street
111 ft·2 sec·Navarro Street
25
Keep slight right at fork onto North Main Avenue
0.4 mi·51 sec·North Main Avenue
Use the slight left / slight right lanes.
26
Turn right onto West Travis Street
222 ft·10 sec·West Travis Street
27
Turn left onto North Flores Street
0.2 mi·20 sec·North Flores Street
28
Continue on Military Plaza
392 ft·15 sec·Military Plaza
29
Turn left onto Dolorosa Street
327 ft·8 sec·Dolorosa Street
30
Arrive at destination
Dolorosa Street
Trip Plan
Since the trip is under three hours, you can easily complete it in one go without scheduling any formal stops. However, because this is a turn-heavy local route, keeping a close eye on your navigation system is essential to stay on the correct path. Aim to fill your tank before you leave McGregor to minimize your fuel stops and keep your $28 budget on track. The primary advantage here is the flexibility of your schedule, so consider leaving during off-peak hours to avoid potential local traffic congestion. Always double-check your turn-by-turn directions before setting out, as local roads can be trickier to follow than major highways.
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 83.7 miles from McGregor, TX, or about 1h 38m into the drive.
The longest continuous stretch on this route runs about 62.2 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 37 miles or 48m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 83.7 miles or 1h 38m 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 36m
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 McGregor, 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 McGregor, TX
This is one driving day of about 167.3 miles and 3h 12m.
Your first comfortable stop window is around 37 miles from McGregor, 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 Purple Heart Trail for about 62.2 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 17
5 decision points cluster between mile 29.9 and 166.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
29.9 mi into trip|~41m in|I 35
Keep slight left at fork onto I 35
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
85.7 mi into trip|~1h 40m in|I 35; US 290 / Purple Heart Trail
Keep slight left at fork onto I 35; US 290 / Purple Heart Trail toward 32nd Street, Dean Keeton Street
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward 32nd Street, Dean Keeton Street
7
159.2 mi into trip|~3h 1m in|I 35 / North Pan Am Expressway
Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 35 South
8
165.6 mi into trip|~3h 9m in|I 35 / North Pan Am Expressway
Keep slight left at fork onto I 35 / North Pan Am Expressway toward I 35 South: Lower Level, Laredo
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward I 35 South: Lower Level, Laredo
8
166.1 mi into trip|~3h 10m in
Take the exit toward Lexington Avenue, Main Avenue, San Pedro Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 157A
Toward Lexington Avenue, Main Avenue, San Pedro...
Fuel & Cost
Regular Gas
$25.28 one way
$50.56 round trip
$3.84/gal25.4 MPG avg59 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$27.67
$55.34
premium
$4.54
$29.87
$59.74
diesel
$5.61
$36.94
$73.88
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: 58.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $18 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
50.2
0
$17.57
$8.03
Efficient EV
41.8
0
$14.64
$6.69
EV Truck/SUV
66.9
0
$23.42
$10.71
Gas CO2
59 kg
EV CO2
20 kg (66% 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.
Forecast as of Apr 13, 2026
Origin
McGregor, TX
Late night
in McGregor on Tuesday
Local time
5:19 AM
CDT
Current temp
84°F
Unavailable
Live forecast
Destination
San Antonio, TX
Late night
in San Antonio on Tuesday
Local time
5:19 AM
CDT
Current temp
85°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
SSE 5 to 10 mph15% chanceLive forecast
Red Flag Warning
Red Flag Warning issued April 13 at 7:52AM CDT until April 13 at 8:00PM CDT by NWS Lubbock TX
Fire Weather Watch
Fire Weather Watch issued April 13 at 7:52AM CDT until April 14 at 8:00PM CDT by NWS Lubbock 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.
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
1 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
3h 12m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
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 167.3
Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a monotonous interstate cruise on this route. With zero highway share, you will be navigating local roads for the entirety of the 189.2-mile journey. This character makes for a more engaged driving experience, as you won't be dealing with high-speed, multi-lane highway stretches. The road requires your full attention as you transition between local paths, offering a shift in pace from typical cross-country travel. You should prepare for a drive that demands consistent navigation rather than long, uninterrupted stretches behind the wheel.
57% highway, the rest on surface roads — varied driving throughout.
30 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 62.2 mi on Purple Heart Trail.
How Hard Is This Drive?
7/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 29.9 miles in near I 35.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 17 significant decision points across 167.3 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 29.9 miles (I 35): Highway fork - watch signs carefully. Lane positioning matters here; at 85.7 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 159.2 miles (I 35 / North Pan Am Expressway): 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
Doable as a same-day drive at 3h 12m. Total distance: 167.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 12m drive, comfortable solo distance.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 62.2 miles on Purple Heart Trail. The full list of main roads is in the Roads section above.
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 29.9 miles (I 35): Highway fork - watch signs carefully. Lane positioning matters here; at 85.7 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 159.2 miles (I 35 / North Pan Am Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — San Antonio Missions National Historical Park and Waco Mammoth National Monument. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.2 hours each way, an in-and-out day trip would put you behind the wheel for 6.4 hours — manageable with a long break at San Antonio, TX, but most travelers stay overnight.
