How far is Bay Saint Louis, MS from Marrero, LA?
The driving distance from Bay Saint Louis, MS to Marrero, LA is about 70.5 miles (113.5 km), with a travel time of about 01h 25m by car.
- The straight-line flight distance is about 54.1 miles (87 km).
- For a round trip, plan for roughly 02h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CST.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 25m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Census-designated place in St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Bay Saint Louis and Marrero.
Turn-by-Turn Driving Directions
Step-by-step road directions between Bay Saint Louis and Marrero.
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1
Start on South 2nd Street
1012 ft · 33 sec · South 2nd Street
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2
Turn left onto Main Street
1.1 mi · 2 min · Main Street
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3
Turn left
2 mi · 3 min
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4
Turn slight right
113 m · 13 sec
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5
Continue straight
5.4 mi · 8 min
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6
Turn left
1837 ft · 47 sec
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7
Merge slight left
18.8 mi · 20 min
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8
Keep slight left
33.4 mi · 38 min
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9
Take the exit slight left toward US 90 West, US 90 Business West: Mississippi River Bridge
2093 ft · 36 sec
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10
Keep slight left to continue on US 90 Business West: Mississippi River Bridge
2418 ft · 41 sec
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11
Merge slight left onto Pontchartrain Expressway
1.4 mi · 1 min · Pontchartrain Expressway
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12
Continue on Crescent City Connection
1.1 km · 1 min · Crescent City Connection
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13
Continue on Westbank Expressway
5.4 mi · 7 min · Westbank Expressway
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14
Take the exit slight right toward LA 45: Barataria Boulevard
1395 ft · 30 sec
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15
Turn straight onto Westbank Expressway
1403 ft · 36 sec · Westbank Expressway
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16
Turn right onto Barataria Boulevard
1612 ft · 39 sec · Barataria Boulevard
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17
Arrive at your destination
0 m · 1 sec · Barataria Boulevard
Car Route Details
A richer read on the saved driving route between Bay Saint Louis and Marrero.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Main Street
Keep slight left
33.4 mi · 00h 38m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Sunny leaving Bay Saint Louis and Mostly Sunny near Marrero.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Bay Saint Louis to Marrero?
The road trip is about 70.5 miles (113.5 km) and usually takes 01h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Eden Isle is a useful midpoint, sitting about 35.2 miles from Bay Saint Louis and 35.3 miles from Marrero.
How much longer is the road route than the straight-line distance?
The direct path is about 54.1 miles (87 km), while the road route adds roughly 16.4 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 8:00 AM to 10:00 AM CST. If you want a more comfortable same-day return, try to leave by 3:40 PM CST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.07 one way or $18.14 round trip. Estimated CO2 is about 22.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Bay Saint Louis and Mostly Sunny near Marrero.
Stop Ideas Near Eden Isle
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 Eden Isle.
Slidell
Picayune
New Orleans Union Passenger Terminal
Hammond
Flight Path Map
This map shows the direct air route between Bay Saint Louis and Marrero. Straight-line distance: 54.04 mi (86.97 km).
#1 Bay Saint Louis
City in Hancock County, Mississippi, United States of America
| Population | 14,529 |
| Coordinates | 30.3088100, -89.3300500 |
| Altitude | 7 |
| Country | United States |
#2 Marrero
CDP in Jefferson Parish, Louisiana
| Population | 33,141 |
| Coordinates | 29.8993700, -90.1003500 |
| Altitude | 1 |
| Country | United States |
End: Marrero (-90.10035, 29.89937)
Estimated Travel Time
Distance: 114 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 21m |
| 40 mph (64.37 km/h) | 01h 45m |
| 50 mph (80.47 km/h) | 01h 24m |
| 60 mph (96.56 km/h) | 01h 10m |
| 70 mph (112.65 km/h) | 01h 00m |
| 80 mph (129 km/h) | 00h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.64 | $9.07 | $18.14 |
| Mid-grade | $4.13 | $10.28 | $20.57 |
| Premium | $4.52 | $11.25 | $22.50 |
| Diesel | $5.73 | $14.27 | $28.54 |
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 Mississippi · Nov 11, 2026