How far is Slidell, LA from Mandeville, LA?
The estimated driving distance from Slidell, LA to Mandeville, LA is about 24.2 miles (38.9 km), with a travel time of about 00h 37m by car.
- This page is using an estimated road distance while the full route geometry is refreshed.
- The straight-line flight distance is about 17.9 miles (28.8 km).
- For a round trip, plan for roughly 01h 14m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
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This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 37m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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
Driving Route Map
Road route is being refreshed. This page currently uses an estimated driving distance.
Turn-by-Turn Driving Directions
Step-by-step road directions between Slidell and Mandeville.
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Slidell and Mostly Sunny near Mandeville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Slidell to Mandeville?
The road trip is about 24.2 miles (38.9 km) and usually takes 00h 37m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Eden Isle is a useful midpoint, sitting about 8.9 miles from Slidell and 15.2 miles from Mandeville.
How much longer is the road route than the straight-line distance?
The direct path is about 17.9 miles (28.8 km), while the road route adds roughly 6.3 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.22 one way or $6.44 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Slidell and Mostly Sunny near Mandeville.
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 Slidell and Mandeville. Straight-line distance: 17.91 mi (28.82 km).
#1 Slidell
City in Louisiana
| Population | 27,541 |
| Coordinates | 30.2751900, -89.7811700 |
| Altitude | 1 |
| Country | United States |
#2 Mandeville
Town in Louisiana, USA
| Population | 12,559 |
| Coordinates | 30.3582500, -90.0656300 |
| Altitude | 2 |
| Country | United States |
End: Mandeville (-90.06563, 30.35825)
Estimated Travel Time
Distance: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 48m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 29m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $3.22 | $6.44 |
| Mid-grade | $4.26 | $3.62 | $7.24 |
| Premium | $4.63 | $3.93 | $7.86 |
| Diesel | $5.42 | $4.60 | $9.21 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
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