How far is Hart, TX from San Antonio, TX?
The driving distance from Hart, TX to San Antonio, TX is about 453.3 miles (729.5 km), with a travel time of about 07h 08m by car.
- The straight-line flight distance is about 403.2 miles (648.9 km).
- For a round trip, plan for roughly 14h 16m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 07h 08m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Nolan County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Hart and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hart and San Antonio.
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1
Start on Broadway
660 ft · 14 sec · Broadway
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2
Turn left
3092 ft · 53 sec
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3
Turn left onto FM 145
19.6 mi · 20 min · FM 145
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4
Turn left
933 ft · 41 sec
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5
Turn right onto I-27 Frontage Road
592 ft · 12 sec · I-27 Frontage Road
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6
Take the ramp slight left
774 ft · 19 sec
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7
Merge slight left onto Marshall Formby Memorial Highway
55.9 mi · 56 min · Marshall Formby Memorial Highway
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8
Take the exit slight right toward Loop 289
1011 ft · 25 sec
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9
Turn straight onto North Interstate 27
2536 ft · 1 min · North Interstate 27
-
10
Turn left onto North Loop 289
1110 ft · 24 sec · North Loop 289
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11
Take the ramp slight left
885 ft · 22 sec
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12
Merge slight left
7.5 mi · 9 min
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13
Take the exit slight right toward Spur 331: Southeast Drive
128 m · 10 sec
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14
Keep slight right to continue on Spur 331: Southeast Drive
71 m · 6 sec
-
15
Turn straight onto Southeast Loop 289
563 ft · 16 sec · Southeast Loop 289
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16
Turn right onto Southeast Drive
1.9 mi · 3 min · Southeast Drive
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17
Merge slight right onto Slaton Road
996 ft · 13 sec · Slaton Road
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18
Continue on East Highway 84
6.9 mi · 7 min · East Highway 84
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19
Continue on Trooper Jerry Don Davis Memorial Highway
4.5 mi · 5 min · Trooper Jerry Don Davis Memorial Highway
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20
Continue on East Highway 84
20 mi · 20 min · East Highway 84
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21
Continue on North US Highway 84
1 mi · 1 min · North US Highway 84
-
22
Turn left onto East 15th Street
734 ft · 17 sec · East 15th Street
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23
Turn right onto Ralls Road
1863 ft · 38 sec · Ralls Road
-
24
Turn straight onto North Avenue F
1.1 mi · 2 min · North Avenue F
-
25
At the end of the road, turn left onto US Highway 84
73.9 mi · 1 hr 14 min · US Highway 84
-
26
Keep slight left to continue on I 20 East, US 84 East: Abilene
6.5 mi · 7 min
-
27
Take the exit slight right toward SH 70 South, SH 70 Business: Sweetwater, San Angelo
737 ft · 18 sec
-
28
Turn slight left onto Southwest Georgia Avenue
624 ft · 17 sec · Southwest Georgia Avenue
-
29
Turn right onto Lamar Street
1.2 km · 1 min · Lamar Street
-
30
Continue on State Highway 70
10.4 mi · 11 min · State Highway 70
-
31
Turn left onto State Highway 153
29.5 mi · 33 min · State Highway 153
-
32
Turn right
12.3 mi · 13 min
-
33
Turn left
6.3 mi · 7 min
-
34
At the end of the road, turn right onto Hutchings Avenue
118 m · 18 sec · Hutchings Avenue
-
35
Turn left onto South 7th Street
16.5 mi · 18 min · South 7th Street
-
36
Continue on Grassmeyer Street
41.9 mi · 45 min · Grassmeyer Street
-
37
Continue on Ellis Street
29.4 mi · 31 min · Ellis Street
-
38
Take the exit left toward I 10 East: San Antonio
40 mi · 38 min
-
39
Continue straight
54.3 mi · 55 min
-
40
Keep slight right
17.4 mi · 20 min
-
41
Keep slight right to continue on McDermott Freeway
1.7 mi · 2 min · McDermott Freeway
-
42
Take the exit slight right toward Santa Rosa Street, Downtown
2505 ft · 1 min
-
43
Turn straight onto North Pecos-La Trinidad
804 ft · 16 sec · North Pecos-La Trinidad
-
44
Keep slight right to continue on North Pecos-La Trinidad
2963 ft · 1 min · North Pecos-La Trinidad
-
45
Turn left onto Dolorosa Street
2582 ft · 56 sec · Dolorosa Street
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46
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Hart and San Antonio.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
US Highway 84
At the end of the road, turn left onto US Highway 84
73.9 mi · 01h 14m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving Hart and Mostly Sunny near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Hart to San Antonio?
The road trip is about 453.3 miles (729.5 km) and usually takes 07h 08m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Blackwell is a useful midpoint, sitting about 232.5 miles from Hart and 220.8 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 403.2 miles (648.9 km), while the road route adds roughly 50.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $60.46 one way or $120.93 round trip. Estimated CO2 is about 142.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Hart and Mostly Sunny near San Antonio.
Flight Path Map
This map shows the direct air route between Hart and San Antonio. Straight-line distance: 403.19 mi (648.87 km).
#1 Hart
City in Texas, USA
| Population | 1,016 |
| Coordinates | 34.3850700, -102.1157400 |
| Altitude | 1118 |
| Country | United States |
#2 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
End: Dolorosa Street (-98.493645, 29.424163)
Estimated Travel Time
Distance: 729 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 06m |
| 40 mph (64.37 km/h) | 11h 19m |
| 50 mph (80.47 km/h) | 09h 03m |
| 60 mph (96.56 km/h) | 07h 33m |
| 70 mph (112.65 km/h) | 06h 28m |
| 80 mph (129 km/h) | 05h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $60.46 | $120.93 |
| Mid-grade | $4.25 | $68.03 | $136.06 |
| Premium | $4.59 | $73.46 | $146.91 |
| Diesel | $3.99 | $63.89 | $127.78 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Texas · May 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.