Origin
McKinney, TX
Morning in McKinney on Tuesday
Local time
7:25 AM
CDT
Current temp
82°F
Unavailable
Live forecast
Trip from McKinney, 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
5h 31m
Distance
305.8 mi
492 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$46
one way
EV Charging
Unknown
Best Time to Leave
4 AM
5h 18m
★
6 AM
5h 32m
8 AM
5h 58m
10 AM
5h 41m
12 PM
5h 38m
3 PM
5h 42m
5 PM
5h 57m
8 PM
5h 24m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
McKinney, TX
Wikimedia Commons
San Antonio, TX
Wikimedia Commons
Trip Overview
McKinney to San Antonio is 305.8 miles and takes about 5h 31m via I 35, with a fuel budget near $46 and enough daylight to finish in a day. This trip moves you from the Great Plains region of North Texas down into the Great Plains of Central Texas. It's a straightforward, mostly highway drive that's ideal for a single-day excursion. You’ll cover a significant distance efficiently, making it a practical choice for getting between these two Texas cities.
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
152.9 miles from McKinney, TX
A natural place for your longest stop of the day , about 2h 44m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Purple Heart Trail | 99.6 mi | 1h 46m |
| South R L Thornton Freeway | 89.9 mi | 1h 32m |
| I 35 | 55.8 mi | 58m |
| Central Expressway | 29.2 mi | 31m |
| North Pan Am Expressway | 17 mi | 20m |
| North Jack Kultgen Expressway | 6.6 mi | 7m |
| Interstate Highway 35 | 1.7 mi | 1m |
| East Virginia Street | 1.4 mi | 3m |
Longest stretch:
Purple Heart Trail
— 99.6 mi, about 1h 46m
Turn-by-Turn Driving Directions
Step-by-step road directions between McKinney, TX and San Antonio, TX.
1
Start on North Tennessee Street
119 ft
·
12 sec
·
North Tennessee Street
2
Turn left onto East Virginia Street
1.4 mi
·
3 min
·
East Virginia Street
3
Turn left onto South Central Expressway
0.6 mi
·
52 sec
·
South Central Expressway
4
Take the ramp
0.3 mi
·
42 sec
Toward US 75 South, TX 121 South
Use the left lane.
5
Merge onto US 75; TX 121
29 mi
·
31 min
·
Central Expressway
Use the straight / slight right lanes.
6
Take the exit
501 ft
·
12 sec
Exit 284C
Toward Downtown, Good-Latimer Expressway
Use the slight left lane.
7
Continue on North Central Expressway
0.7 mi
·
1 min
·
North Central Expressway
Use the left / straight lanes.
8
Turn right onto Elm Street
304 ft
·
10 sec
·
Elm Street
9
Turn left onto North Pearl Expressway
0.2 mi
·
28 sec
·
North Pearl Expressway
Use the straight lane.
10
Turn right onto Young Street
0.1 mi
·
19 sec
·
Young Street
11
Turn left onto South Harwood Street
315 ft
·
8 sec
·
South Harwood Street
Use the left lane.
12
Turn right onto Canton Street
0.4 mi
·
47 sec
·
Canton Street
13
Take the ramp
0.3 mi
·
38 sec
Toward I 30 West
14
Keep slight left at fork
0.1 mi
·
14 sec
Toward I 35E South, I 35E North: Waco, Denton
15
Keep slight left at fork
221 ft
·
5 sec
Toward I 35E North, I 35E South: Denton, Waco
Use the straight / slight right lanes.
16
Keep slight left at fork
0.4 mi
·
30 sec
Toward I 35E South: Waco
Use the left / right lanes.
17
Continue on I 35E
0.5 mi
·
44 sec
·
South R L Thornton Freeway
18
Continue on I 35E
89 mi
·
1 hr 31 min
·
South R L Thornton Freeway
Exit 426
Toward Dallas Zoo
Use the straight / slight right lanes.
19
Continue on I 35; US 77
6.6 mi
·
7 min
·
North Jack Kultgen Expressway
Use the straight / slight right lanes.
20
Continue on I 35
38 mi
·
39 min
·
Purple Heart Trail
Use the straight / slight right lanes.
21
Keep slight left at fork onto I 35
56 mi
·
58 min
·
I 35
Use the straight / slight right lanes.
22
Keep slight left at fork onto I 35; US 290
50 mi
·
54 min
·
Purple Heart Trail
Toward 32nd Street, Dean Keeton Street
Use the slight left lane.
23
Continue on I 35
1.7 mi
·
1 min
·
Interstate Highway 35
Use the straight / slight right lanes.
24
Continue on I 35
12 mi
·
12 min
·
Purple Heart Trail
Use the straight / slight right lanes.
25
Continue on I 35
10.0 mi
·
11 min
·
North Pan Am Expressway
Use the straight / slight right lanes.
26
Keep slight left at fork onto I 35
6.4 mi
·
8 min
·
North Pan Am Expressway
Toward I 35 South
Use the straight / slight right lanes.
27
Keep slight left at fork onto I 35
0.6 mi
·
41 sec
·
North Pan Am Expressway
Toward I 35 South: Lower Level, Laredo
Use the slight left lane.
28
Take the exit
0.1 mi
·
16 sec
Exit 157A
Toward Lexington Avenue, Main Avenue, San Pedro Avenue
Use the slight right lane.
29
Turn straight onto East Elmira Street
526 ft
·
17 sec
·
East Elmira Street
Use the left / straight lanes.
30
Turn left onto North Main Avenue
0.2 mi
·
18 sec
·
North Main Avenue
Use the left / straight lanes.
31
Enter roundabout onto Navarro Street
159 ft
·
3 sec
·
Navarro Street
32
Continue on Navarro Street
111 ft
·
2 sec
·
Navarro Street
33
Keep slight right at fork onto North Main Avenue
0.4 mi
·
51 sec
·
North Main Avenue
Use the slight left / slight right lanes.
34
Turn right onto West Travis Street
222 ft
·
10 sec
·
West Travis Street
35
Turn left onto North Flores Street
0.2 mi
·
20 sec
·
North Flores Street
36
Continue on Military Plaza
392 ft
·
15 sec
·
Military Plaza
37
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
38
Arrive at destination
Dolorosa Street
Trip Plan
To make the most of this 5.5-hour drive, consider leaving McKinney in the morning to avoid the heaviest traffic heading out of the Dallas-Fort Worth area. With a total duration under 6 hours, you can comfortably complete this trip in one day, but don't hesitate to stop if you need a break. Keep an eye on your fuel levels, especially during the 99.6-mile stretch on the Purple Heart Trail, as services can be more spread out in some sections. Plan for your fuel stop before you leave or when you see signs indicating longer distances between services.
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 152.9 miles from McKinney, TX, or about 2h 44m into the drive.
The longest continuous stretch on this route runs about 99.6 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 67 miles or 1h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 152.9 miles or 2h 44m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 28m
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 McKinney, 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 McKinney, TX
This is one driving day of about 305.8 miles and 5h 31m.
Your first comfortable stop window is around 67 miles from McKinney, 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 99.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
153 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 67 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 152.9 miles from McKinney, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Purple Heart Trail if your tank is already low. That segment runs about 99.6 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 275 decision points cluster between mile 31.5 and 304.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
31.5 mi into trip
|
~36m in
Take the exit toward Downtown, Good-Latimer Expressway
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Exit 284C
Toward Downtown, Good-Latimer Expressway
9
33.6 mi into trip
|
~40m in
Keep slight left at fork toward I 35E North, I 35E South: Denton, Waco
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 35E North, I 35E South: Denton, Waco
8
224.2 mi into trip
|
~3h 59m 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
8
304.1 mi into trip
|
~5h 28m 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
304.6 mi into trip
|
~5h 28m 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
$46.21 one way
$92.41 round trip
$3.84/gal
25.4 MPG avg
107 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $50.58 | $101.15 |
| premium | $4.54 | $54.60 | $109.20 |
| diesel | $5.61 | $67.52 | $135.03 |
Estimated Tolls: $2.44
Central Expressway
(30.5 mi)
$2.44
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
$46
Tolls
$2
Meals
$25–$50
Total
$74–$99
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 107 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $32 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 91.7 | 1 | $32.11 | $14.68 |
| Efficient EV | 76.5 | 0 | $26.76 | $12.23 |
| EV Truck/SUV | 122.3 | 1 | $42.81 | $19.57 |
Gas CO2
107 kg
EV CO2
36 kg (66% 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
San Antonio, TX
Morning in San Antonio on Tuesday
Local time
7:25 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
12 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
5h 31m 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.
What kind of drive is this?
This drive is largely highway cruising, with 66% of the route on major roads like I 35. You'll encounter a longest stretch of 99.6 miles on the Purple Heart Trail, which is a good indicator of how uninterrupted much of the driving will be. Expect frequent exits and merges as you pass through populated areas, particularly around the Dallas-Fort Worth metroplex and into Austin. The profile is mostly highway, meaning you'll be on high-speed roads for the majority of your travel time.
66% highway — fuel and pacing are the main things to plan.
38 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 99.6 mi on Purple Heart Trail.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on Purple Heart Trail and South R L Thornton Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 31.5 miles in.
Driving Effort
7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 27 significant decision points across 305.8 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 31.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 33.6 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 224.2 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. 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 McKinney, TX and San Antonio, TX, road signs point toward Downtown, Denton, Waco and Dallas Zoo.
Downtown
31.5 mi in
|
~36m
Denton
33.5 mi in
|
~40m
Waco
33.6 mi in
|
~40m
Dallas Zoo
34.6 mi in
|
~41m
|
via I 35E
About the Cities
Starting in McKinney, TX
Full guide →Founded 1848
McKinney is a city in the Blackland Prairie region of Texas.
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 5h 31m. Total distance: 305.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 31m drive, comfortable solo distance.
Frequently Asked Questions
The longest stretch is about 99.6 miles on Purple Heart Trail. The full list of main roads is in the Roads section above.
Expect about $2.44 in tolls one way, starting with Central Expressway. 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 31.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 33.6 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 224.2 miles (I 35; US 290 / Purple Heart Trail): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Not recommended in a single day. At 5.5 hours each way, a round trip means 11.1 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Antonio, TX before the return drive.
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, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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