If you are planning a trip from San Antonio to McGregor, expect a straightforward journey covering 167.3 miles. You should budget approximately 3 hours and 13 minutes of driving time, making this an ideal day trip that doesn't require an overnight stay. With a fuel cost estimate of around $25, it is an affordable excursion within the Great Plains. Since the route involves no mandatory stops, you have the freedom to complete the drive in one efficient stretch. Whether you are heading north for business or a visit, this trip is manageable for most drivers looking to navigate between these two Texas locations.
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 San Antonio, TX
A natural place for your longest stop of the day
, about 1h 34m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 13m. Total distance: 167.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 13m drive, comfortable solo distance.
Scenic Drive
Turn-heavy local drive route profile with national parks nearby.
Drive Character
Prepare for a turn-heavy local drive rather than a monotonous interstate cruise. Since the highway share is 0%, you will spend the entire 167.3 miles navigating local roads that demand your full attention. This configuration creates a distinct driving personality where the pace is dictated by local traffic and road geometry rather than high-speed highway cruising. You will experience a consistent rhythm behind the wheel without the long, uninterrupted stretches found on major interstates. Expect a more engaged driving experience as you transition through the Texas landscape.
This route has more turning and local-road decision points than a simple highway run.
There are about 26 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Purple Heart Trail is the longest continuous segment at about 117.7 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.8 miles in.
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 10 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 0.8 miles: Lane positioning matters here; at 0.9 miles: Multiple destination signs - pick the right one; at 1.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Critical Maneuvers
5 of 10 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
6
0.8 mi into trip|~1m in
Turn left
Lane positioning matters here
Use the left lane.
7
0.9 mi into trip|~1m in
Take the ramp toward US 281 North, I 37 North
Multiple destination signs - pick the right one
Toward US 281 North, I 37 North
7
1.9 mi into trip|~3m in
Take the exit toward I 35 North: Austin
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 142A
Toward I 35 North: Austin
7
10.7 mi into trip|~14m in|North Pan Am Expressway
Keep slight left at fork onto North Pan Am Expressway toward I 35: Austin
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 35: Austin
6
79.7 mi into trip|~1h 30m in|I 35; US 290 / Purple Heart Trail
Keep slight right at fork onto I 35; US 290 / Purple Heart Trail
Highway fork - watch signs carefully. Lane positioning matters here
Step-by-step road directions between San Antonio, TX and McGregor, TX.
1
Start on Dolorosa Street
143 ft·4 sec·Dolorosa Street
2
Continue on West Market Street
0.4 mi·42 sec·West Market Street
3
Continue on East Market Street
0.4 mi·45 sec·East Market Street
4
Turn left
363 ft·13 sec
Use the left lane.
5
Turn straight onto East Commerce Street
216 ft·12 sec·East Commerce Street
6
Take the ramp
0.2 mi·28 sec
Toward US 281 North, I 37 North
7
Merge onto I 37; US 281
0.8 mi·55 sec·William J Bordelon Freeway
8
Take the exit
0.6 mi·1 min
Exit 142AToward I 35 North: AustinUse the slight right lane.
9
Merge onto I 35
8.2 mi·10 min·North Pan Am Expressway
Use the straight / slight right lanes.
10
Keep slight left at fork onto North Pan Am Expressway
7.4 mi·8 min·North Pan Am Expressway
Toward I 35: AustinUse the straight / slight right lanes.
11
Continue on I 35
12 mi·12 min·Purple Heart Trail
Use the straight / slight right lanes.
12
Continue on I 35
1.9 mi·2 min·Interstate Highway 35
Use the straight / slight right lanes.
13
Continue on I 35
48 mi·52 min·Purple Heart Trail
Use the straight / slight right lanes.
14
Keep slight right at fork onto I 35; US 290
58 mi·1 hr 1 min·Purple Heart Trail
Use the straight / slight right lanes.
15
Take the exit
0.3 mi·39 sec
Exit 294AToward Central Avenue
16
Turn straight onto South I-35 Frontage Road
328 ft·8 sec·South I-35 Frontage Road
17
Turn left onto East Central Avenue
0.6 mi·1 min·East Central Avenue
18
Turn right onto TX 317
2.8 mi·5 min·North Main Street
19
Continue on TX 317
13 mi·16 min·State Highway 317
20
Continue on TX 317
1.4 mi·1 min·South Lone Star Parkway
21
Continue on TX 317
2.8 mi·5 min·Avenue D
22
Continue on TX 317
5.6 mi·6 min·State Highway 317
23
Continue on TX 317
2.5 mi·3 min·South Main Street
24
Continue on TX 317
0.2 mi·19 sec·North Lone Star Parkway
25
Turn left onto US 84
45 ft·1 sec·West McGregor Drive
26
Arrive at destination
US 84
Trip Plan
Because this drive is a continuous local route, your departure time is flexible, though leaving early helps you avoid potential congestion on local roads. Since there are no designated stops, plan your own breaks ahead of time to ensure you stay refreshed during the 3-hour and 13-minute journey. Keep your fuel budget of $25 in mind as you map out your transit, as local refueling options may be less frequent than those found along major highways. A smart tip for this specific route is to double-check your navigation settings to ensure you are comfortable with the turn-heavy nature of the local road network before you head out.
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 San Antonio, TX, or about 1h 34m into the drive.
The longest continuous stretch on this route runs about 117.7 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 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 83.7 miles or 1h 34m 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 31m
Traffic, exits, and arrival timing usually matter more near McGregor, 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.
Day 1
Settle into the route from San Antonio, TX
This is one driving day of about 167.3 miles and 3h 13m.
Your first comfortable stop window is around 80 miles from San Antonio, 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 117.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 83.7 mi from San Antonio, TX
· 1h 34m into the drive
The midpoint is around 83.7 miles from San Antonio, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Purple Heart Trail if your tank is already low. That segment runs about 117.7 miles.
Arriving in McGregor, TX
The final approach into McGregor, 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 McGregor, 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.
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...
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...
18 mi from route
~44 min detour
Free
near mile 167.3
Park data from the National Park Service API. Alerts update every 2 hours.
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 15, 2026
Origin
San Antonio, TX
Afternoon
in San Antonio on Thursday
Local time
3:08 PM
CDT
Current temp
77°F
Unavailable
Live forecast
Destination
McGregor, TX
Afternoon
in McGregor on Thursday
Local time
3:08 PM
CDT
Current temp
60°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
17 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
3h 13m 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 San Antonio, TX to McGregor, TX covers 167.3 miles and takes about 3h 13m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Purple Heart Trail, State Highway 317, North Pan Am Expressway. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 83.7 miles from San Antonio, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $25.28 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 10 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.
The main spots that need attention: at 0.8 miles: Lane positioning matters here; at 0.9 miles: Multiple destination signs - pick the right one; at 1.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
The route from San Antonio, TX to McGregor, TX does not surface many named destination signs beyond the main corridor.
