How far is Port Sulphur, LA from Monroe, LA?
The driving distance from Port Sulphur, LA to Monroe, LA is about 348.3 miles (560.5 km), with a travel time of about 05h 28m by car.
- The straight-line flight distance is about 253.8 miles (408.5 km).
- For a round trip, plan for roughly 10h 57m 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 05h 28m.
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 Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Clear
Driving Route Map
The map below follows the saved road route between Port Sulphur and Monroe.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Sulphur and Monroe.
-
1
Start on the route
39.8 mi · 52 min
-
2
Turn right onto Behrman Highway
2.3 mi · 4 min · Behrman Highway
-
3
Turn straight onto Behrman Place
1908 ft · 36 sec · Behrman Place
-
4
Keep slight left to continue on Behrman Place
1567 ft · 45 sec · Behrman Place
-
5
At the end of the road, turn left onto General de Gaulle Drive
1.2 mi · 2 min · General de Gaulle Drive
-
6
Take the ramp straight toward US 90 Business East: New Orleans
2126 ft · 42 sec
-
7
Merge slight left onto Westbank Expressway
1.5 km · 1 min · Westbank Expressway
-
8
Continue on Crescent City Connection
1 km · 58 sec · Crescent City Connection
-
9
Continue on Pontchartrain Expressway
80.6 mi · 1 hr 32 min · Pontchartrain Expressway
-
10
Keep slight right to continue on Martin Luther King Jr Memorial Freeway
6.2 mi · 8 min · Martin Luther King Jr Memorial Freeway
-
11
Continue on Martin Luther King, Jr. Memorial Freeway
2.6 mi · 3 min · Martin Luther King, Jr. Memorial Freeway
-
12
Keep slight right to continue on US 61 North: Natchez
1227 ft · 17 sec
-
13
Continue on Scenic Highway
3.8 mi · 6 min · Scenic Highway
-
14
Continue on Samuels Road
75.7 mi · 1 hr 29 min · Samuels Road
-
15
Turn left
566 ft · 18 sec
-
16
Continue on John R Junkin Drive
2.4 mi · 3 min · John R Junkin Drive
-
17
Continue on Natchez-Vidalia Bridge
10.6 mi · 12 min · Natchez-Vidalia Bridge
-
18
Continue on E. E. Wallace Boulevard North
63.2 mi · 1 hr 13 min · E. E. Wallace Boulevard North
-
19
Turn left
1459 ft · 36 sec
-
20
Merge slight left
20.3 mi · 22 min
-
21
Take the exit slight right toward US 165 BUS, LA 15: Civic Center
775 ft · 19 sec
-
22
Keep slight right
93 m · 7 sec
-
23
Turn straight onto Lea Joyner Memorial Expressway
2694 ft · 46 sec · Lea Joyner Memorial Expressway
-
24
Continue on North 6th Street
1643 ft · 35 sec · North 6th Street
-
25
Turn left onto Louisville Avenue
628 ft · 18 sec · Louisville Avenue
-
26
Turn left
14 m · 5 sec
-
27
Turn right
12 m · 3 sec
-
28
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Port Sulphur and Monroe.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Pontchartrain Expressway
Continue on Pontchartrain Expressway
80.6 mi · 01h 32m
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 Clear leaving Port Sulphur and Mostly Sunny near Monroe.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port Sulphur to Monroe?
The road trip is about 348.3 miles (560.5 km) and usually takes 05h 28m 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?
Saint Francisville is a useful midpoint, sitting about 156.7 miles from Port Sulphur and 191.6 miles from Monroe.
How much longer is the road route than the straight-line distance?
The direct path is about 253.8 miles (408.5 km), while the road route adds roughly 94.5 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 6:02 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.54 one way or $93.08 round trip. Estimated CO2 is about 109.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Clear around Port Sulphur and Mostly Sunny near Monroe.
Stop Ideas Near Saint Francisville
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 Saint Francisville.
Baton Rouge, Louisiana
Lafayette
Hammond
New Iberia
Flight Path Map
This map shows the direct air route between Port Sulphur and Monroe. Straight-line distance: 253.81 mi (408.46 km).
#1 Port Sulphur
City in Louisiana, United States of America
| Population | 1,760 |
| Coordinates | 29.4804900, -89.6939500 |
| Altitude | 1 |
| Country | United States |
#2 Monroe
The most populous city in Ouachita Parish, Louisiana.
| Population | 46,998 |
| Coordinates | 32.5093100, -92.1193000 |
| Altitude | 23 |
| Country | United States |
End: North 4th Street (-92.119438, 32.509236)
Estimated Travel Time
Distance: 561 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 36m |
| 40 mph (64.37 km/h) | 08h 42m |
| 50 mph (80.47 km/h) | 06h 57m |
| 60 mph (96.56 km/h) | 05h 48m |
| 70 mph (112.65 km/h) | 04h 58m |
| 80 mph (129 km/h) | 04h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $46.54 | $93.08 |
| Mid-grade | $4.26 | $52.34 | $104.69 |
| Premium | $4.63 | $56.84 | $113.68 |
| Diesel | $5.42 | $66.55 | $133.10 |
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 Louisiana · 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.