How far is Sundown, TX from San Antonio, TX?
The driving distance from Sundown, TX to San Antonio, TX is about 411.7 miles (662.5 km), with a travel time of about 06h 33m by car.
- The straight-line flight distance is about 364.7 miles (587 km).
- For a round trip, plan for roughly 13h 06m 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 06h 33m.
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.
The most populous city in Tom Green County, Texas.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Sundown and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sundown and San Antonio.
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1
Start on East Richardson Street
2620 ft · 52 sec · East Richardson Street
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2
Continue on FM 301
6 mi · 11 min · FM 301
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3
Turn right onto South US Highway 385
17.2 mi · 17 min · South US Highway 385
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4
Turn right onto State Highway 137
2.3 mi · 2 min · State Highway 137
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5
Continue on North 14th Street
2 mi · 4 min · North 14th Street
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6
Turn sharp left onto Seagraves Road
1240 ft · 20 sec · Seagraves Road
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7
Turn right onto Lamesa Highway
1.4 km · 1 min · Lamesa Highway
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8
Continue on State Highway 137
1.6 km · 1 min · State Highway 137
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9
Continue on Lamesa Highway
14.7 mi · 15 min · Lamesa Highway
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10
Continue on Brownfield Highway
2.4 mi · 3 min · Brownfield Highway
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11
Continue on North State Highway 137
15.3 mi · 23 min · North State Highway 137
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12
Continue on North Bryan Avenue
1.2 mi · 2 min · North Bryan Avenue
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13
Turn left onto North 4th Street
1.1 km · 55 sec · North 4th Street
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14
Turn right onto North Lynn Avenue
1.2 mi · 1 min · North Lynn Avenue
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15
Continue on South Dallas Avenue
1.3 mi · 1 min · South Dallas Avenue
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16
Continue on South US Highway 87
18.1 mi · 18 min · South US Highway 87
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17
Continue on William Crooker Highway
1.4 mi · 1 min · William Crooker Highway
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18
Continue on North US Highway 87
18.1 mi · 18 min · North US Highway 87
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19
Continue on William B Crooker Memorial Highway
52.1 mi · 52 min · William B Crooker Memorial Highway
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20
Continue on 4th Street
1.2 mi · 2 min · 4th Street
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21
Continue on US Highway 87 South
14.6 mi · 15 min · US Highway 87 South
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22
Continue straight
72.2 mi · 1 hr 18 min
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23
Turn right onto South Main Street
21.5 mi · 23 min · South Main Street
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24
Continue on Ellis Street
29.4 mi · 31 min · Ellis Street
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25
Take the exit left toward I 10 East: San Antonio
40 mi · 38 min
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26
Continue straight
54.3 mi · 55 min
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27
Keep slight right
17.4 mi · 20 min
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28
Keep slight right to continue on McDermott Freeway
1.7 mi · 2 min · McDermott Freeway
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29
Take the exit slight right toward Santa Rosa Street, Downtown
2505 ft · 1 min
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30
Turn straight onto North Pecos-La Trinidad
804 ft · 16 sec · North Pecos-La Trinidad
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31
Keep slight right to continue on North Pecos-La Trinidad
2963 ft · 1 min · North Pecos-La Trinidad
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32
Turn left onto Dolorosa Street
2582 ft · 56 sec · Dolorosa Street
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33
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Sundown 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 87 South
Continue straight
72.2 mi · 01h 18m
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.
Mostly Sunny leaving Sundown and Mostly Cloudy near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sundown to San Antonio?
The road trip is about 411.7 miles (662.5 km) and usually takes 06h 33m 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?
San Angelo is a useful midpoint, sitting about 205.4 miles from Sundown and 206.2 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 364.7 miles (587 km), while the road route adds roughly 47 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 $54.91 one way or $109.82 round trip. Estimated CO2 is about 129.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Sundown and Mostly Cloudy near San Antonio.
Flight Path Map
This map shows the direct air route between Sundown and San Antonio. Straight-line distance: 364.74 mi (587 km).
#1 Sundown
City in Hockley County, Texas, United States
| Population | 1,414 |
| Coordinates | 33.4562100, -102.4893600 |
| Altitude | 1079 |
| 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: 662 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 42m |
| 40 mph (64.37 km/h) | 10h 17m |
| 50 mph (80.47 km/h) | 08h 13m |
| 60 mph (96.56 km/h) | 06h 51m |
| 70 mph (112.65 km/h) | 05h 52m |
| 80 mph (129 km/h) | 05h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $54.91 | $109.82 |
| Mid-grade | $4.25 | $61.78 | $123.56 |
| Premium | $4.59 | $66.71 | $133.41 |
| Diesel | $3.99 | $58.02 | $116.04 |
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 · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.