How far is Laplace, LA from Sulphur, LA?
The driving distance from Laplace, LA to Sulphur, LA is about 189.6 miles (305.1 km), with a travel time of about 03h 36m by car.
- The straight-line flight distance is about 173.4 miles (279.1 km).
- For a round trip, plan for roughly 07h 13m 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 36m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Laplace and Sulphur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Laplace and Sulphur.
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1
Start on the route
13 m · 5 sec
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2
Turn left onto West Airline Highway
1.3 mi · 2 min · West Airline Highway
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3
Turn right onto Belle Terre Boulevard
2.2 mi · 4 min · Belle Terre Boulevard
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4
Keep slight left to continue on I 10 West: Baton Rouge
1.4 km · 2 min
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5
Merge slight left
50.3 mi · 55 min
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6
Keep slight left
128.7 mi · 2 hr 23 min
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7
Take the exit slight right toward US 90 West
1377 ft · 34 sec
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8
Keep slight right
5.9 mi · 9 min
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9
Arrive at your destination
0 m · 1 sec · East Napoleon Street
Car Route Details
A richer read on the saved driving route between Laplace and Sulphur.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 10 West
Keep slight left
129 mi · 02h 23m
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.
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms leaving Laplace and Chance Showers And Thunderstorms near Sulphur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Laplace to Sulphur?
The road trip is about 189.6 miles (305.1 km) and usually takes 03h 36m 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?
Henderson is a useful midpoint, sitting about 94.6 miles from Laplace and 94.9 miles from Sulphur.
How much longer is the road route than the straight-line distance?
The direct path is about 173.4 miles (279.1 km), while the road route adds roughly 16.2 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 9:46 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $25.34 one way or $50.67 round trip. Estimated CO2 is about 59.5 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms around Laplace and Chance Showers And Thunderstorms near Sulphur.
Stop Ideas Near Henderson
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Parks City Hall
Lafayette Consolidated Government
Housing Authority of Lafayette
City of St. Martinville Tourist Information Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Henderson.
Lafayette
New Iberia
Baton Rouge, Louisiana
Schriever
Flight Path Map
This map shows the direct air route between Laplace and Sulphur. Straight-line distance: 173.41 mi (279.07 km).
#1 Laplace
Unincorporated suburban community and census-designated place in Saint John the Baptist Parish, Louisiana, United States of America
| Population | 29,872 |
| Coordinates | 30.0669800, -90.4814700 |
| Altitude | 3 |
| Country | United States |
#2 Sulphur
Suburb city of Lake Charles, located in Calcasieu Parish, Louisiana, United States
| Population | 20,120 |
| Coordinates | 30.2365900, -93.3773800 |
| Altitude | 5 |
| Country | United States |
End: Sulphur (-93.37738, 30.23659)
Estimated Travel Time
Distance: 305 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 18m |
| 40 mph (64.37 km/h) | 04h 44m |
| 50 mph (80.47 km/h) | 03h 47m |
| 60 mph (96.56 km/h) | 03h 09m |
| 70 mph (112.65 km/h) | 02h 42m |
| 80 mph (129 km/h) | 02h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $25.34 | $50.67 |
| Mid-grade | $4.26 | $28.49 | $56.99 |
| Premium | $4.63 | $30.94 | $61.88 |
| Diesel | $5.42 | $36.23 | $72.45 |
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 Louisiana · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.