How far is Tornillo, TX from San Antonio, TX?
The driving distance from Tornillo, TX to San Antonio, TX is about 518.2 miles (833.9 km), with a travel time of about 07h 35m by car.
- The straight-line flight distance is about 473.4 miles (761.8 km).
- For a round trip, plan for roughly 15h 11m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
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 35m.
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 Pecos County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Tornillo and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Tornillo and San Antonio.
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1
Start on Alameda Avenue
24 m · 3 sec · Alameda Avenue
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2
Turn right onto O T Smith Road
1.8 mi · 4 min · O T Smith Road
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3
At the end of the road, turn right onto O T Smith Road
1.2 km · 52 sec · O T Smith Road
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4
Take the exit right
1380 ft · 34 sec
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5
Merge slight left
131 mi · 2 hr 3 min
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6
Keep slight right
363.5 mi · 5 hr 45 min
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7
Keep slight right
17.4 mi · 20 min
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8
Keep slight right to continue on McDermott Freeway
1.7 mi · 2 min · McDermott Freeway
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9
Take the exit slight right toward Santa Rosa Street, Downtown
2505 ft · 1 min
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10
Turn straight onto North Pecos-La Trinidad
804 ft · 16 sec · North Pecos-La Trinidad
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11
Keep slight right to continue on North Pecos-La Trinidad
2963 ft · 1 min · North Pecos-La Trinidad
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12
Turn left onto Dolorosa Street
2582 ft · 56 sec · Dolorosa Street
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13
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Tornillo and San Antonio.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
O T Smith Road
Keep slight right
363 mi · 05h 45m
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.
Partly Sunny leaving Tornillo 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 Tornillo to San Antonio?
The road trip is about 518.2 miles (833.9 km) and usually takes 07h 35m 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?
Iraan is a useful midpoint, sitting about 258.8 miles from Tornillo and 259.4 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 473.4 miles (761.8 km), while the road route adds roughly 44.8 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 MDT. 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 $69.08 one way or $138.16 round trip. Estimated CO2 is about 162.5 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Tornillo and San Antonio, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Partly Sunny around Tornillo and Mostly Sunny near San Antonio.
Stop Ideas Near Iraan
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Iraan.
Sanderson
Flight Path Map
This map shows the direct air route between Tornillo and San Antonio. Straight-line distance: 473.37 mi (761.82 km).
#1 Tornillo
Census designated place
| Population | 1,568 |
| Coordinates | 31.4454000, -106.0883100 |
| Altitude | 1093 |
| 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: 834 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 17h 15m |
| 40 mph (64.37 km/h) | 12h 57m |
| 50 mph (80.47 km/h) | 10h 21m |
| 60 mph (96.56 km/h) | 08h 38m |
| 70 mph (112.65 km/h) | 07h 24m |
| 80 mph (129 km/h) | 06h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $69.08 | $138.16 |
| Mid-grade | $4.25 | $77.73 | $155.45 |
| Premium | $4.59 | $83.92 | $167.85 |
| Diesel | $3.99 | $72.99 | $145.98 |
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 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.