Origin
Castle Hills, TX
Morning in Castle Hills on Thursday
Local time
9:44 AM
CDT
Current temp
74°F
Unavailable
Live forecast
Trip from Castle Hills, TX to San Antonio, TX
Last recalculated Apr 16, 2026
Drive Time
14m
Distance
8 mi
13 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$1
one way
Best Time to Leave
4 AM
0h 13m
★
6 AM
0h 14m
8 AM
0h 17m
10 AM
0h 15m
12 PM
0h 15m
3 PM
0h 15m
5 PM
0h 16m
8 PM
0h 13m
★
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Castle Hills, TX
Jeff Stapleton
San Antonio, TX
Wikimedia Commons
Trip Overview
Navigating the 10.1 miles from Castle Hills to San Antonio is a quick, straightforward journey that takes about 14 minutes. Because the entire trip stays within the Great Plains region of Texas, you won't need to worry about changing landscapes or overnight accommodations, making this a perfect single-day trip. You can easily budget about $2 for fuel, keeping your travel expenses minimal. The route relies on local roads rather than major interstates, providing a direct link between the two locations. It is an ideal option if you need to manage a quick commute or run errands between these points without any scheduled stops.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 14m. Total distance: 8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
14m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a turn-heavy, local driving experience that prioritizes city streets over open highway speed. You will navigate via Northwest Military Highway, Northwest Loop 410, and San Pedro Avenue, with the route maintaining a 0% highway share. Because there is no extended highway cruising, your longest uninterrupted stretch on Northwest Military Highway is effectively 0 miles. The road’s personality is defined by urban maneuvering rather than long-distance endurance. Behind the wheel, you should stay alert for frequent turns as you transition through the local road network.
This route has more turning and local-road decision points than a simple highway run.
There are about 14 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
San Pedro Avenue is the longest continuous segment at about 6 miles.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.3 miles in near Northwest Loop 410.
Route Complexity
7/10
Focused - busy navigation packed into a short drive
This is a short but busy drive. With 8 decision points packed into just 8 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 14m.
Where does it get tricky?
The main spots that need attention: at 0.3 miles (Northwest Loop 410): Lane positioning matters here; at 1 miles (Northwest Loop 410): Highway fork - watch signs carefully. Lane positioning matters here; at 1.1 miles (San Pedro Avenue): Lane positioning matters here.
Critical Maneuvers
5 of 8 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
6
0.3 mi into trip
|
~0m in
|
Northwest Loop 410
At end of road, turn left onto Northwest Loop 410
Lane positioning matters here
Use the left lane.
7
1 mi into trip
|
~2m in
|
Northwest Loop 410
Keep slight left at fork onto Northwest Loop 410
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
1.1 mi into trip
|
~2m in
|
San Pedro Avenue
Turn right onto San Pedro Avenue
Lane positioning matters here
Use the right lane.
6
7.2 mi into trip
|
~12m in
|
North Main Avenue
Keep slight right at fork onto North Main Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
5
7.9 mi into trip
|
~13m in
|
Dolorosa Street
Turn left onto Dolorosa Street
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| San Pedro Avenue | 6 mi | 9m |
| Northwest Loop 410 | 0.8 mi | 1m |
| North Main Avenue | 0.4 mi | <1m |
| Northwest Military Highway | 0.3 mi | <1m |
| North Flores Street | 0.2 mi | <1m |
| Military Plaza | <0.1 mi | <1m |
| Dolorosa Street | <0.1 mi | <1m |
| West Travis Street | <0.1 mi | <1m |
Longest stretch:
San Pedro Avenue
— 6 mi, about 9m
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Hills, TX and San Antonio, TX.
1
Start on South Gardenview Drive
186 ft
·
8 sec
·
South Gardenview Drive
2
Turn right onto FM 1535
0.3 mi
·
48 sec
·
Northwest Military Highway
3
At end of road, turn left onto Northwest Loop 410
0.4 mi
·
43 sec
·
Northwest Loop 410
Use the left lane.
4
Continue on Northwest Loop 410
0.3 mi
·
26 sec
·
Northwest Loop 410
5
Keep slight left at fork onto Northwest Loop 410
0.2 mi
·
20 sec
·
Northwest Loop 410
Use the straight / slight right lanes.
6
Turn right onto San Pedro Avenue
6.0 mi
·
9 min
·
San Pedro Avenue
Use the right lane.
7
Enter roundabout onto Navarro Street
71 ft
·
1 sec
·
Navarro Street
8
Continue on Navarro Street
111 ft
·
2 sec
·
Navarro Street
9
Keep slight right at fork onto North Main Avenue
0.4 mi
·
51 sec
·
North Main Avenue
Use the slight left / slight right lanes.
10
Turn right onto West Travis Street
222 ft
·
10 sec
·
West Travis Street
11
Turn left onto North Flores Street
0.2 mi
·
20 sec
·
North Flores Street
12
Continue on Military Plaza
392 ft
·
15 sec
·
Military Plaza
13
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
14
Arrive at destination
Dolorosa Street
Fuel & Cost
Regular Gas
$1.21 one way
$2.42 round trip
$3.84/gal
25.4 MPG avg
3 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $1.32 | $2.65 |
| premium | $4.54 | $1.43 | $2.86 |
| diesel | $5.61 | $1.77 | $3.53 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$1
Estimated CO2 emission: 2.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $1 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 2.4 | 0 | $0.84 | $0.38 |
| Efficient EV | 2 | 0 | $0.70 | $0.32 |
| EV Truck/SUV | 3.2 | 0 | $1.12 | $0.51 |
Gas CO2
3 kg
EV CO2
1 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
San Antonio, TX
Morning in San Antonio on Thursday
Local time
9:44 AM
CDT
Current temp
85°F
Mostly Cloudy
SSE 5 to 15 mph
3% chance
Live forecast
Wind Advisory
Wind Advisory issued April 14 at 6:30AM CDT until April 14 at 9:00PM CDT by NWS Amarillo TX
Red Flag Warning
Red Flag Warning issued April 14 at 6:28AM CDT until April 14 at 9:00PM CDT by NWS Amarillo TX
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
11 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
14m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Castle Hills, TX to San Antonio, TX covers 8 miles and takes about 14m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are San Pedro Avenue, Northwest Loop 410, North Main Avenue. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 4 miles from Castle Hills, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $1.21 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a short but busy drive. With 8 decision points packed into just 8 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 14m.
The main spots that need attention: at 0.3 miles (Northwest Loop 410): Lane positioning matters here; at 1 miles (Northwest Loop 410): Highway fork - watch signs carefully. Lane positioning matters here; at 1.1 miles (San Pedro Avenue): Lane positioning matters here.
The route from Castle Hills, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.
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