How far is Castle Hills, TX from Plano, TX?
The driving distance from Castle Hills, TX to Plano, TX is about 301.6 miles (485.4 km), with a travel time of about 04h 46m by car.
- The straight-line flight distance is about 264.3 miles (425.4 km).
- For a round trip, plan for roughly 09h 32m 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 04h 46m.
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.
The most populous city in Bell County, Texas.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Castle Hills and Plano.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castle Hills and Plano.
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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
47.8 mi · 52 min · Purple Heart Trail
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11
Keep slight right to continue on Purple Heart Trail
95.6 mi · 1 hr 40 min · Purple Heart Trail
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12
Continue on South Jack Kultgen Expressway
6.6 mi · 8 min · South Jack Kultgen Expressway
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13
Continue on Purple Heart Trail
33 mi · 33 min · Purple Heart Trail
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14
Keep slight right to continue on I 35E: Dallas
56.2 mi · 58 min
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15
Take the exit slight right toward I 30 East: Texarkana, Riverfront Boulevard, Griffin Street
2094 ft · 42 sec
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16
Keep slight left to continue on I 35E North, I 30 West: Denton, Fort Worth, Texarkana
129 m · 6 sec
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17
Keep slight right to continue on I 30 East: Texarkana, Convention Center
2206 ft · 33 sec
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18
Keep slight left to continue on I 30 East: Texarkana
117 m · 6 sec
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19
Continue on East R L Thornton Freeway
1.2 km · 1 min · East R L Thornton Freeway
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20
Take the exit slight right toward I 45, US 75: Houston, McKinney
2421 ft · 46 sec
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21
Keep slight left to continue on US 75 North: McKinney
2512 ft · 1 min
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22
Keep slight right to continue on US 75 North: McKinney, Bryan Street East
1697 ft · 27 sec
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23
Merge slight left onto Julius Schepps Freeway
1.2 km · 49 sec · Julius Schepps Freeway
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24
Continue on North Central Expressway
15.2 mi · 16 min · North Central Expressway
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25
Take the exit slight right toward Plano Parkway, 15th Street
2162 ft · 53 sec
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26
Turn straight onto North Central Expressway
1.4 mi · 2 min · North Central Expressway
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27
Turn right onto East 15th Street
3101 ft · 1 min · East 15th Street
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28
Arrive at your destination
0 m · 1 sec · East 15th Street
Car Route Details
A richer read on the saved driving route between Castle Hills and Plano.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Purple Heart Trail
Keep slight right to continue on Purple Heart Trail
95.6 mi · 01h 40m
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.
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms leaving Castle Hills and Slight Chance Showers And Thunderstorms near Plano.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castle Hills to Plano?
The road trip is about 301.6 miles (485.4 km) and usually takes 04h 46m 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?
Temple is a useful midpoint, sitting about 144.8 miles from Castle Hills and 156.8 miles from Plano.
How much longer is the road route than the straight-line distance?
The direct path is about 264.3 miles (425.4 km), while the road route adds roughly 37.3 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 7:28 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $40.21 one way or $80.42 round trip. Estimated CO2 is about 94.6 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms around Castle Hills and Slight Chance Showers And Thunderstorms near Plano.
Stop Ideas Near Temple
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 Temple.
Temple
Killeen, Texas
McGregor
Fort Hood, Texas
Flight Path Map
This map shows the direct air route between Castle Hills and Plano. Straight-line distance: 264.34 mi (425.42 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 Plano
The second most populous city in Texas and the center of the Dallas-Fort Worth metropolitan area.
| Population | 291,296 |
| Coordinates | 33.0198400, -96.6988900 |
| Altitude | 203 |
| Country | United States |
End: East 15th Street (-96.698873, 33.019694)
Estimated Travel Time
Distance: 485 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 02m |
| 40 mph (64.37 km/h) | 07h 32m |
| 50 mph (80.47 km/h) | 06h 01m |
| 60 mph (96.56 km/h) | 05h 01m |
| 70 mph (112.65 km/h) | 04h 18m |
| 80 mph (129 km/h) | 03h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $40.21 | $80.42 |
| Mid-grade | $4.25 | $45.24 | $90.48 |
| Premium | $4.59 | $48.85 | $97.70 |
| Diesel | $3.99 | $42.49 | $84.97 |
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 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.