How far is Houston, TX from Castle Hills, TX?
The driving distance from Houston, TX to Castle Hills, TX is about 202.6 miles (326.1 km), with a travel time of about 03h 35m by car.
- The straight-line flight distance is about 190.1 miles (305.9 km).
- For a round trip, plan for roughly 07h 11m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 03h 35m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Town in Fayette County, Texas, United States
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 Houston and Castle Hills.
Turn-by-Turn Driving Directions
Step-by-step road directions between Houston and Castle Hills.
-
1
Start on Louisiana Street
761 ft · 25 sec · Louisiana Street
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2
Take the ramp straight toward I 10 West: San Antonio
2149 ft · 52 sec
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3
Merge slight right onto Katy Freeway
174.9 mi · 3 hr 2 min · Katy Freeway
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4
Keep slight left
12 mi · 13 min
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5
Keep slight left to continue on 90th Infantry Division Highway
1230 ft · 16 sec · 90th Infantry Division Highway
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6
Take the exit slight right toward I 410, TX 130
1627 ft · 40 sec
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7
Keep slight right to continue on I 410 North
2195 ft · 54 sec
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8
Merge slight left onto Connally Loop
3 mi · 4 min · Connally Loop
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9
Merge slight left onto North Pan Am Expressway
2.7 mi · 3 min · North Pan Am Expressway
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10
Take the exit slight right toward I 410 West, Loop 368 South
8 mi · 9 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 Houston and Castle Hills.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Katy Freeway
Merge slight right onto Katy Freeway
175 mi · 03h 02m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Partly Sunny leaving Houston 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 Houston to Castle Hills?
The road trip is about 202.6 miles (326.1 km) and usually takes 03h 35m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Flatonia is a useful midpoint, sitting about 101.2 miles from Houston and 101.5 miles from Castle Hills.
How much longer is the road route than the straight-line distance?
The direct path is about 190.1 miles (305.9 km), while the road route adds roughly 12.5 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 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 9:48 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.02 one way or $54.04 round trip. Estimated CO2 is about 63.5 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Houston and Partly Sunny near Castle Hills.
Stop Ideas Near Flatonia
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 Flatonia.
San Marcos Station
Austin
Taylor
Prairie View, TX
Flight Path Map
This map shows the direct air route between Houston and Castle Hills. Straight-line distance: 190.06 mi (305.88 km).
#1 Houston
The fourth most populous city in the United States and the center of the Houston metropolitan area.
| Population | 2,316,120 |
| Coordinates | 29.7632800, -95.3632700 |
| Altitude | 12 |
| 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: 326 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 45m |
| 40 mph (64.37 km/h) | 05h 03m |
| 50 mph (80.47 km/h) | 04h 03m |
| 60 mph (96.56 km/h) | 03h 22m |
| 70 mph (112.65 km/h) | 02h 53m |
| 80 mph (129 km/h) | 02h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $27.02 | $54.04 |
| Mid-grade | $4.25 | $30.40 | $60.80 |
| Premium | $4.59 | $32.83 | $65.65 |
| Diesel | $3.99 | $28.55 | $57.10 |
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.