How far is Castle Hills, TX from San Antonio, TX?
The driving distance from Castle Hills, TX to San Antonio, TX is about 10.1 miles (16.2 km), with a travel time of about 00h 14m by car.
- The straight-line flight distance is about 7 miles (11.2 km).
- For a round trip, plan for roughly 00h 28m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 14m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 Bexar County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Castle Hills and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Hills and San Antonio.
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1
Start on South Gardenview Drive
57 m · 8 sec · South Gardenview Drive
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2
Turn right onto Northwest Military Highway
1649 ft · 48 sec · Northwest Military Highway
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3
At the end of the road, turn left onto Northwest Loop 410
2089 ft · 44 sec · Northwest Loop 410
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4
Continue on Northwest Loop 410
1321 ft · 26 sec · Northwest Loop 410
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5
Keep slight left to continue on Northwest Loop 410
816 ft · 21 sec · Northwest Loop 410
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6
Turn right onto San Pedro Avenue
6 mi · 10 min · San Pedro Avenue
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7
Enter the roundabout and take exit 1 toward Navarro Street
22 m · 2 sec · Navarro Street
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8
Exit the roundabout onto Navarro Street
34 m · 2 sec · Navarro Street
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9
Keep slight right to continue on North Main Avenue
2181 ft · 52 sec · North Main Avenue
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10
Turn right onto West Travis Street
68 m · 11 sec · West Travis Street
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11
Turn left onto North Flores Street
807 ft · 20 sec · North Flores Street
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12
Continue on Military Plaza
119 m · 16 sec · Military Plaza
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13
Turn left onto Dolorosa Street
100 m · 8 sec · Dolorosa Street
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14
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Castle Hills and San Antonio.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
San Pedro Avenue
Turn right onto San Pedro Avenue
6.04 mi · 00h 10m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Partly Sunny leaving Castle Hills 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 Castle Hills to San Antonio?
The road trip is about 10.1 miles (16.2 km) and usually takes 00h 14m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Olmos Park is a useful midpoint, sitting about 4 miles from Castle Hills and 6.1 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 7 miles (11.2 km), while the road route adds roughly 3.1 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 8:02 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.36 one way or $2.72 round trip. Estimated CO2 is about 3.2 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Castle Hills and Partly Sunny near San Antonio.
Stop Ideas Near Olmos Park
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Piazza Italia Park
District 4 City Council Office
Municipal Plaza
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Olmos Park.
San Antonio Station
San Marcos Station
Austin
Flight Path Map
This map shows the direct air route between Castle Hills and San Antonio. Straight-line distance: 6.99 mi (11.25 km).
#1 Castle Hills
City in Bexar County, Texas, United States
| Population | 4,448 |
| Coordinates | 29.5232900, -98.5164100 |
| Altitude | 256 |
| 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: 16 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 20m |
| 40 mph (64.37 km/h) | 00h 15m |
| 50 mph (80.47 km/h) | 00h 12m |
| 60 mph (96.56 km/h) | 00h 10m |
| 70 mph (112.65 km/h) | 00h 08m |
| 80 mph (129 km/h) | 00h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $1.36 | $2.72 |
| Mid-grade | $4.25 | $1.53 | $3.06 |
| Premium | $4.59 | $1.65 | $3.31 |
| Diesel | $3.99 | $1.44 | $2.87 |
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.