How far is Austin, TX from Castle Hills, TX?
The driving distance from Austin, TX to Castle Hills, TX is about 76.1 miles (122.4 km), with a travel time of about 01h 25m by car.
- The straight-line flight distance is about 69.2 miles (111.4 km).
- For a round trip, plan for roughly 02h 51m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 25m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Census designated place
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 Austin and Castle Hills.
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin and Castle Hills.
-
1
Start on East 5th Street
2551 ft · 1 min · East 5th Street
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2
At the end of the road, turn right onto North Interstate 35
1893 ft · 40 sec · North Interstate 35
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3
Take the ramp slight left toward I 35 South
899 ft · 22 sec
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4
Merge slight left onto Purple Heart Trail
46.4 mi · 50 min · Purple Heart Trail
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5
Continue on Interstate Highway 35
1.7 mi · 2 min · Interstate Highway 35
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6
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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7
Continue on North Pan Am Expressway
6.9 mi · 8 min · North Pan Am Expressway
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8
Take the exit slight right toward I 410 West, Loop 368 South
2289 ft · 56 sec
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9
Keep slight left to continue on I 410 West
1680 ft · 33 sec
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10
Merge slight left onto Connally Loop
6.9 mi · 8 min · Connally Loop
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11
Take the exit slight right toward Honeysuckle Lane, Frontage Road
925 ft · 21 sec
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12
Turn right onto Roleto Drive
601 ft · 28 sec · Roleto Drive
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13
Turn right onto South Gardenview Drive
700 ft · 31 sec · South Gardenview Drive
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14
Arrive at your destination
0 m · 1 sec · South Gardenview Drive
Car Route Details
A richer read on the saved driving route between Austin and Castle Hills.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Purple Heart Trail
Merge slight left onto Purple Heart Trail
46.4 mi · 00h 50m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny leaving Austin and Partly Sunny near Castle Hills.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Austin to Castle Hills?
The road trip is about 76.1 miles (122.4 km) and usually takes 01h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Redwood is a useful midpoint, sitting about 38 miles from Austin and 38 miles from Castle Hills.
How much longer is the road route than the straight-line distance?
The direct path is about 69.2 miles (111.4 km), while the road route adds roughly 6.9 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 3:38 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.13 one way or $20.26 round trip. Estimated CO2 is about 23.8 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Austin and Partly Sunny near Castle Hills.
Stop Ideas Near Redwood
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
New Braunfels Parks and Recreation
New Braunfels City Hall
Comal County Courthouse(Gerichtsgebäude)
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Redwood.
San Marcos Station
Austin
San Antonio Station
Taylor
Flight Path Map
This map shows the direct air route between Austin and Castle Hills. Straight-line distance: 69.19 mi (111.35 km).
#1 Austin
The eleventh most populous city in the United States and the center of the Austin metropolitan area.
| Population | 995,484 |
| Coordinates | 30.2671500, -97.7430600 |
| Altitude | 149 |
| Country | United States |
#2 Castle Hills
City in Bexar County, Texas, United States
| Population | 4,448 |
| Coordinates | 29.5232900, -98.5164100 |
| Altitude | 256 |
| Country | United States |
End: Castle Hills (-98.51641, 29.52329)
Estimated Travel Time
Distance: 122 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 32m |
| 40 mph (64.37 km/h) | 01h 54m |
| 50 mph (80.47 km/h) | 01h 31m |
| 60 mph (96.56 km/h) | 01h 16m |
| 70 mph (112.65 km/h) | 01h 05m |
| 80 mph (129 km/h) | 00h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $10.13 | $20.26 |
| Mid-grade | $4.25 | $11.40 | $22.79 |
| Premium | $4.59 | $12.30 | $24.61 |
| Diesel | $3.99 | $10.70 | $21.40 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.