Embarking on this 364.5-mile journey from Horn Lake, MS, to Bay Saint Louis, MS, will take approximately 7 hours and 8 minutes of driving time. This route is best suited for a single day of travel, with a projected fuel cost of around $56. You'll navigate through local roads, indicated by a 0% highway share, making it a more engaged driving experience. The drive primarily takes place within the Southeast region, specifically Mississippi, offering a consistent regional feel throughout your trip. With two planned stops, you can break up the travel time effectively.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
182.3 miles from Horn Lake, MS
A natural place for your longest stop of the day
, about 3h 20m into the drive
.
Main Roads
Road
Distance
Duration
I 55
193.5 mi
3h 29m
Highway 49 South
80.3 mi
1h 37m
Lance Corporal Roy M Wheat Memorial Highway
40.1 mi
43m
MS 603
25 mi
37m
South Main Street
15.7 mi
23m
US 49
2.2 mi
3m
US 90
2.1 mi
3m
Goodman Road West
1.8 mi
2m
Longest stretch:
I 55
— 193.5 mi, about 3h 29m
Turn-by-Turn Driving Directions
Step-by-step road directions between Horn Lake, MS and Bay Saint Louis, MS.
1
Start on Camelot Road
193 ft·13 sec·Camelot Road
2
Turn left onto Hurt Road
0.5 mi·2 min·Hurt Road
3
Turn right onto MS 302
1.8 mi·2 min·Goodman Road West
4
Take the ramp
0.4 mi·54 sec
Toward Jackson
5
Merge onto I 55; I 69
194 mi·3 hr 29 min·I 55; I 69
6
Take the exit
0.9 mi·1 min
Toward I 20 East, US 49 South: Meridian, Hattiesburg
7
Keep slight right at fork onto US 49
0.7 mi·1 min·US 49
Toward Richland, Hattiesburg
8
Merge onto US 49
80 mi·1 hr 37 min·Highway 49 South
Use the straight lane.
9
Continue on US 49; MS 42
0.4 mi·35 sec·US 49; MS 42
Use the straight lane.
10
Continue on US 49; MS 42
1.1 mi·1 min·US 49; MS 42
Use the straight lane.
11
Take the exit
0.4 mi·36 sec
Toward I 59 South: New Orleans, Gulf CoastUse the slight right lane.
12
Merge onto I 59
40 mi·43 min·Lance Corporal Roy M Wheat Memorial Highway
Toward Mississippi Gulf CoastUse the straight lane.
13
Take the exit
0.2 mi·27 sec
Toward MS 53: Poplarville, Necaise
14
Turn left onto MS 53
16 mi·23 min·South Main Street
15
Continue on MS 603
25 mi·37 min·MS 603
16
Turn left onto US 90
2.1 mi·3 min·US 90
17
Turn right onto Main Street
1.1 mi·1 min·Main Street
18
Turn right onto South 2nd Street
0.2 mi·27 sec·South 2nd Street
19
Arrive at destination
South 2nd Street
Trip Plan
For this 7-hour, 364.5-mile drive, consider an early morning departure from Horn Lake, MS, to maximize daylight and minimize potential traffic encountered on local roads. With two stops factored in, aim for roughly every two to three hours of driving to stretch your legs and refuel, keeping the $56 fuel budget in mind. As this is a turn-heavy local drive, pay close attention to GPS or navigation to avoid missing crucial turns, especially as you approach Bay Saint Louis, MS. Being flexible with your timing is an advantage on a route like this, allowing you to adjust to local conditions.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 182.3 miles from Horn Lake, MS, or about 3h 20m into the drive.
The longest continuous stretch on this route runs about 193.5 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 80 miles or 1h 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 182.3 miles or 3h 20m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 44m
Traffic, exits, and arrival timing usually matter more near Bay Saint Louis, MS than in the middle of the route.
Before You Leave
+
Open the route before leaving Horn Lake, MS so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Day 1
Settle into the route from Horn Lake, MS
This is one driving day of about 364.5 miles and 7h 8m.
Your first comfortable stop window is around 80 miles from Horn Lake, MS.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 55 for about 193.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 12
5 decision points cluster between mile 196.3 and 280.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
196.3 mi into trip|~3h 35m in
Take the exit toward I 20 East, US 49 South: Meridian, Hattiesburg
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 20 East, US 49 South: Meridian, Hattie...
6
197.2 mi into trip|~3h 36m in|US 49
Keep slight right at fork onto US 49 toward Richland, Hattiesburg
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward Richland, Hattiesburg
5
198 mi into trip|~3h 38m in|US 49 / Highway 49 South
Merge onto US 49 / Highway 49 South
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
7
279.8 mi into trip|~5h 17m in
Take the exit toward I 59 South: New Orleans, Gulf Coast
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 59 South: New Orleans, Gulf Coast
6
280.1 mi into trip|~5h 18m in|I 59 / Lance Corporal Roy M Wheat Memorial Highway
Merge onto I 59 / Lance Corporal Roy M Wheat Memorial Highway toward Mississippi Gulf Coast
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
Toward Mississippi Gulf Coast
Fuel & Cost
Regular Gas
$55.05 one way
$110.10 round trip
$3.84/gal25.4 MPG avg128 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.21
$60.43
$120.86
premium
$4.56
$65.42
$130.85
diesel
$5.61
$80.48
$160.95
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$55
Meals
$25–$50
Total
$80–$105
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 127.5 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
7 DC fast chargers
· Coverage: good
Tesla Supercharger
Southaven, Mississippi
Tesla
1 DCFC
Noodoe Charging Station
Bay St Louis, Mississippi
Other
1 DCFC
Tesla Supercharger
Horn Lake, Mississippi
Tesla
1 DCFC
Pilot Flying J Charging Station
Winona, Mississippi
Other
1 DCFC
ChargePoint Charging Station
Southaven, Mississippi
ChargePoint
1 DCFC
ChargePoint Charging Station
Southaven, Mississippi
ChargePoint
1 DCFC
Nissan Charging Station
Southaven, Mississippi
Other
1 DCFC
Other: 3
Tesla: 2
ChargePoint: 2
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $38 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
109.4
1
$38.27
$17.50
Efficient EV
91.1
1
$31.89
$14.58
EV Truck/SUV
145.8
1
$51.03
$23.33
Gas CO2
128 kg
EV CO2
43 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 15, 2026
Origin
Horn Lake, MS
Evening
in Horn Lake on Saturday
Local time
8:30 PM
CDT
Current temp
77°F
Unavailable
Live forecast
Destination
Bay Saint Louis, MS
Evening
in Bay Saint Louis on Saturday
Local time
8:30 PM
CDT
Current temp
88°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
11 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
7h 8m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Medgar and Myrlie Evers Home National Monument
National Monument
Medgar and Myrlie Evers were partners in the civil rights struggle. The assassination of Medgar Evers in the carport of their home on June 12, 1963, was the first murder of a nationally significant le...
5 mi from route
~13 min detour
Free
near mile 188.6
Emmett Till and Mamie Till-Mobley National Monument
National Monument
In 1955, 14-year-old Emmett Till traveled to Money, Mississippi, to visit relatives. He was kidnapped, tortured, and murdered after reportedly whistling at a white woman. His mother, Mamie Till-Mobley...
28 mi from route
~71 min detour
Free
near mile 62.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This is a turn-heavy local drive, meaning you'll be actively navigating through towns and local streets for the majority of the 364.5 miles. With a 0% highway share, expect a constant engagement with traffic signals, intersections, and varying speed limits. The longest uninterrupted stretch isn't specified, but given the 'turn-heavy' profile, frequent adjustments will be part of the experience. This route will feel like a continuous exploration of Mississippi's local roads, rather than a high-speed transit.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 19 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 55 is the longest continuous segment at about 193.5 miles.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on I 55 and Highway 49 South. You will hit about 12 points where you need to pay attention to lane position or signs. The trickiest moment comes around 196.3 miles in.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 364.5 miles you will encounter 12 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 196.3 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 197.2 miles (US 49): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 198 miles (US 49 / Highway 49 South): Merge point - match speed before joining. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Horn Lake, MS and Bay Saint Louis, MS, road signs point toward Hattiesburg, Richland, Gulf Coast, Mississippi Gulf Coast and Necaise.
Hattiesburg
196.3 mi in|~3h 35m
Richland
197.2 mi in|~3h 36m|via US 49
Gulf Coast
279.8 mi in|~5h 17m
Mississippi Gulf Coast
280.1 mi in|~5h 18m|via I 59
Necaise
320.3 mi in|~6h 1m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 8m. Total distance: 364.5 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 8m drive, plan rest stops for pacing.
Frequently Asked Questions
The drive from Horn Lake, MS to Bay Saint Louis, MS covers 364.5 miles and takes about 7h 8m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 55, Highway 49 South, Lance Corporal Roy M Wheat Memorial Highway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 182.3 miles from Horn Lake, MS. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $55.05 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This drive requires moderate attention. Across 364.5 miles you will encounter 12 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: at 196.3 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 197.2 miles (US 49): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 198 miles (US 49 / Highway 49 South): Merge point - match speed before joining. Lane positioning matters here.
Between Horn Lake, MS and Bay Saint Louis, MS, road signs point toward Hattiesburg, Richland, Gulf Coast, Mississippi Gulf Coast and Necaise.
Yes. Nearby national parks include Medgar and Myrlie Evers Home National Monument and Emmett Till and Mamie Till-Mobley National Monument.
