How far is Idalou, TX from San Antonio, TX?
The driving distance from Idalou, TX to San Antonio, TX is about 390.8 miles (628.9 km), with a travel time of about 06h 09m by car.
- The straight-line flight distance is about 348.1 miles (560.2 km).
- For a round trip, plan for roughly 12h 18m 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 09m.
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 Texas, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Driving Route Map
The map below follows the saved road route between Idalou and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Idalou and San Antonio.
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1
Start on Walnut Street
24 m · 8 sec · Walnut Street
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2
Turn left onto West 1st Street
7.6 mi · 8 min · West 1st Street
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3
Take the exit slight right toward Loop 289
859 ft · 24 sec
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4
Turn straight onto Idalou Road
948 ft · 36 sec · Idalou Road
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5
Turn left onto Northeast Loop 289
115 m · 10 sec · Northeast Loop 289
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6
Continue on East Loop 289
1395 ft · 25 sec · East Loop 289
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7
Take the ramp slight left
1043 ft · 25 sec
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8
Merge slight left
4.1 mi · 5 min
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9
Take the exit slight right toward Spur 331: Southeast Drive
128 m · 10 sec
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10
Keep slight right to continue on Spur 331: Southeast Drive
71 m · 6 sec
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11
Turn straight onto Southeast Loop 289
563 ft · 16 sec · Southeast Loop 289
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12
Turn right onto Southeast Drive
1.9 mi · 3 min · Southeast Drive
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13
Merge slight right onto Slaton Road
996 ft · 13 sec · Slaton Road
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14
Continue on East Highway 84
6.9 mi · 7 min · East Highway 84
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15
Continue on Trooper Jerry Don Davis Memorial Highway
4.5 mi · 5 min · Trooper Jerry Don Davis Memorial Highway
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16
Continue on East Highway 84
20 mi · 20 min · East Highway 84
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17
Continue on North US Highway 84
1 mi · 1 min · North US Highway 84
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18
Turn left onto East 15th Street
734 ft · 17 sec · East 15th Street
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19
Turn right onto Ralls Road
1863 ft · 38 sec · Ralls Road
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20
Turn straight onto North Avenue F
1.1 mi · 2 min · North Avenue F
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21
At the end of the road, turn left onto US Highway 84
73.9 mi · 1 hr 14 min · US Highway 84
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22
Keep slight left to continue on I 20 East, US 84 East: Abilene
6.5 mi · 7 min
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23
Take the exit slight right toward SH 70 South, SH 70 Business: Sweetwater, San Angelo
737 ft · 18 sec
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24
Turn slight left onto Southwest Georgia Avenue
624 ft · 17 sec · Southwest Georgia Avenue
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25
Turn right onto Lamar Street
1.2 km · 1 min · Lamar Street
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26
Continue on State Highway 70
10.4 mi · 11 min · State Highway 70
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27
Turn left onto State Highway 153
29.5 mi · 33 min · State Highway 153
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28
Turn right
12.3 mi · 13 min
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29
Turn left
6.3 mi · 7 min
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30
At the end of the road, turn right onto Hutchings Avenue
118 m · 18 sec · Hutchings Avenue
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31
Turn left onto South 7th Street
16.5 mi · 18 min · South 7th Street
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32
Continue on Grassmeyer Street
41.9 mi · 45 min · Grassmeyer Street
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33
Continue on Ellis Street
29.4 mi · 31 min · Ellis Street
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34
Take the exit left toward I 10 East: San Antonio
40 mi · 38 min
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35
Continue straight
54.3 mi · 55 min
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36
Keep slight right
17.4 mi · 20 min
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37
Keep slight right to continue on McDermott Freeway
1.7 mi · 2 min · McDermott Freeway
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38
Take the exit slight right toward Santa Rosa Street, Downtown
2505 ft · 1 min
-
39
Turn straight onto North Pecos-La Trinidad
804 ft · 16 sec · North Pecos-La Trinidad
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40
Keep slight right to continue on North Pecos-La Trinidad
2963 ft · 1 min · North Pecos-La Trinidad
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41
Turn left onto Dolorosa Street
2582 ft · 56 sec · Dolorosa Street
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42
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Idalou 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 Idalou and Partly Sunny near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Idalou to San Antonio?
The road trip is about 390.8 miles (628.9 km) and usually takes 06h 09m 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?
Ballinger is a useful midpoint, sitting about 196 miles from Idalou and 194.7 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 348.1 miles (560.2 km), while the road route adds roughly 42.7 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 $52.11 one way or $104.22 round trip. Estimated CO2 is about 122.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Idalou and Partly Sunny near San Antonio.
Stop Ideas Near Ballinger
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Ballinger City Park
Ballinger City Administrator
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Ballinger.
Flight Path Map
This map shows the direct air route between Idalou and San Antonio. Straight-line distance: 348.07 mi (560.16 km).
#1 Idalou
City in Lubbock County, Texas, United States
| Population | 2,313 |
| Coordinates | 33.6664700, -101.6829400 |
| Altitude | 973 |
| 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: 629 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 01m |
| 40 mph (64.37 km/h) | 09h 46m |
| 50 mph (80.47 km/h) | 07h 48m |
| 60 mph (96.56 km/h) | 06h 30m |
| 70 mph (112.65 km/h) | 05h 34m |
| 80 mph (129 km/h) | 04h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $52.11 | $104.22 |
| Mid-grade | $4.25 | $58.64 | $117.27 |
| Premium | $4.59 | $63.31 | $126.62 |
| Diesel | $3.99 | $55.06 | $110.13 |
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 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.