How far is San Leon, TX from Plano, TX?
The driving distance from San Leon, TX to Plano, TX is about 300.7 miles (484 km), with a travel time of about 04h 46m by car.
- The straight-line flight distance is about 265.9 miles (428 km).
- For a round trip, plan for roughly 09h 33m 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.
City in Leon County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between San Leon and Plano.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Leon and Plano.
-
1
Start on Avenue I
50 m · 9 sec · Avenue I
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2
Continue straight
8.7 mi · 14 min
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3
Turn left onto Parke Street
1677 ft · 29 sec · Parke Street
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4
Turn straight onto Main Street
136 m · 10 sec · Main Street
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5
Continue on Pine Street
1717 ft · 31 sec · Pine Street
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6
Continue on Pine Drive
1.4 mi · 2 min · Pine Drive
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7
Turn right onto Gulf Freeway Frontage Road
1.5 km · 2 min · Gulf Freeway Frontage Road
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8
Take the ramp slight left toward I 45 North
1035 ft · 25 sec
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9
Merge slight left onto South Gulf Freeway
28.6 mi · 33 min · South Gulf Freeway
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10
Continue on North Freeway
237.4 mi · 4 hr 9 min · North Freeway
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11
Continue on North Central Expressway
15.2 mi · 16 min · North Central Expressway
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12
Take the exit slight right toward Plano Parkway, 15th Street
2162 ft · 53 sec
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13
Turn straight onto North Central Expressway
1.4 mi · 2 min · North Central Expressway
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14
Turn right onto East 15th Street
3101 ft · 1 min · East 15th Street
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15
Arrive at your destination
0 m · 1 sec · East 15th Street
Car Route Details
A richer read on the saved driving route between San Leon and Plano.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
North Freeway
Continue on North Freeway
237 mi · 04h 09m
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.
Mostly Cloudy then Chance Showers And Thunderstorms leaving San Leon and 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 San Leon to Plano?
The road trip is about 300.7 miles (484 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?
Leona is a useful midpoint, sitting about 148 miles from San Leon and 152.7 miles from Plano.
How much longer is the road route than the straight-line distance?
The direct path is about 265.9 miles (428 km), while the road route adds roughly 34.8 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 7:26 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $40.10 one way or $80.19 round trip. Estimated CO2 is about 94.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Chance Showers And Thunderstorms around San Leon and Chance Showers And Thunderstorms near Plano.
Stop Ideas Near Leona
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 Leona.
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Flight Path Map
This map shows the direct air route between San Leon and Plano. Straight-line distance: 265.92 mi (427.96 km).
#1 San Leon
Census designated place
| Population | 4,970 |
| Coordinates | 29.4832900, -94.9221500 |
| Altitude | 3 |
| 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: 484 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 01m |
| 40 mph (64.37 km/h) | 07h 31m |
| 50 mph (80.47 km/h) | 06h 00m |
| 60 mph (96.56 km/h) | 05h 00m |
| 70 mph (112.65 km/h) | 04h 17m |
| 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 | $40.10 | $80.19 |
| Mid-grade | $4.25 | $45.11 | $90.23 |
| Premium | $4.59 | $48.71 | $97.42 |
| Diesel | $3.99 | $42.37 | $84.73 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.