How far is Castle Hills, TX from Austin, TX?
The driving distance from Castle Hills, TX to Austin, TX is about 76.1 miles (122.4 km), with a travel time of about 01h 20m by car.
- The straight-line flight distance is about 69.2 miles (111.4 km).
- For a round trip, plan for roughly 02h 41m 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 20m.
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.
Cloudy
Mostly Cloudy then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Castle Hills and Austin.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Hills and Austin.
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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
85 m · 6 sec · Northwest Loop 410
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4
Take the ramp slight left toward I 410 East
1476 ft · 36 sec
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5
Merge slight left onto Connally Loop
7 mi · 8 min · Connally Loop
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6
Keep slight left to continue on I 35 North: Austin
1694 ft · 41 sec
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7
Merge slight left onto North Pan Am Expressway
6.8 mi · 8 min · North Pan Am Expressway
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8
Continue on Purple Heart Trail
11.9 mi · 13 min · Purple Heart Trail
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9
Continue on Interstate Highway 35
1.9 mi · 2 min · Interstate Highway 35
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10
Continue on Purple Heart Trail
46.7 mi · 51 min · Purple Heart Trail
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11
Take the exit slight right toward 6th - 12th Streets
665 ft · 24 sec
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12
Turn left onto East 6th Street
2863 ft · 1 min · East 6th Street
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13
Turn left onto Congress Avenue
109 m · 18 sec · Congress Avenue
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14
Turn left onto East 5th Street
8 m · 1 sec · East 5th Street
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15
Arrive at your destination
0 m · 1 sec · East 5th Street
Car Route Details
A richer read on the saved driving route between Castle Hills and Austin.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Purple Heart Trail
Continue on Purple Heart Trail
46.7 mi · 00h 51m
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.
Cloudy leaving Castle Hills and Mostly Cloudy then Chance Showers And Thunderstorms near Austin.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castle Hills to Austin?
The road trip is about 76.1 miles (122.4 km) and usually takes 01h 20m 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 38.1 miles from Castle Hills and 38 miles from Austin.
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 3:48 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 Cloudy around Castle Hills and Mostly Cloudy then Chance Showers And Thunderstorms near Austin.
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 Castle Hills and Austin. Straight-line distance: 69.19 mi (111.35 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 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 |
End: East 5th Street (-97.743073, 30.267115)
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.