If you are looking to travel from Sulphur to Lafayette, you can expect an 83.5-mile journey that typically takes about 1 hour and 22 minutes. This trip is designed as a single-day excursion, meaning you won't need to worry about booking overnight accommodations along the way. With an estimated fuel cost of just $11, it is a very budget-friendly trip to navigate through Southeast Louisiana. Since the route involves zero formal stops, you should plan to drive straight through to your destination. It is a straightforward local connection, perfect for those who prefer avoiding the major interstate systems in favor of a more direct, ground-level approach.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
41.7 miles from Sulphur, LA
A natural place for your longest stop of the day
, about 49m into the drive
.
Main Roads
Road
Distance
Duration
I 10
56.1 mi
1h
US 90
18.6 mi
21m
East Napoleon Street
6 mi
9m
North University Avenue
1.9 mi
3m
Versailles Boulevard
0.3 mi
1m
Rue Vermilion Ouest
0.2 mi
<1m
Saint John Street
<0.1 mi
<1m
Longest stretch:
I 10
— 56.1 mi, about 1h
Turn-by-Turn Driving Directions
Step-by-step road directions between Sulphur, LA and Lafayette, LA.
1
Start on US 90
6.0 mi·9 min·East Napoleon Street
Use the straight lane.
2
Take the ramp onto US 90
19 mi·21 min·US 90
3
Continue on I 10
56 mi·1 hr·I 10
4
Take the exit
0.3 mi·32 sec
Toward LA 182
5
Keep slight right at fork
306 ft·7 sec
6
Turn slight right onto North University Avenue
1.9 mi·3 min·North University Avenue
7
Turn left onto Versailles Boulevard
0.3 mi·1 min·Versailles Boulevard
8
At end of road, turn right onto Saint John Street
235 ft·11 sec·Saint John Street
9
Turn left onto Rue Vermilion Ouest
0.2 mi·43 sec·Rue Vermilion Ouest
10
Arrive at destination
Rue Vermilion Ouest
Trip Plan
Since this is a relatively short trip, you have plenty of flexibility regarding your departure time, though planning for light traffic is always a smart move. Given that there are no scheduled stops, ensure your vehicle is fueled up before you leave, keeping in mind the $11 estimate for your gas budget. Stay alert on LA 182 and North University Avenue, as the turn-heavy nature of this route demands consistent focus compared to a standard highway drive. Because the duration is just under an hour and a half, you can easily complete this drive in one go without needing to build in rest breaks. Keep your navigation tools handy for the transition onto Versailles Boulevard to ensure you stay on track through the local turns.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 41.7 miles from Sulphur, LA, or about 49m into the drive.
The longest continuous stretch on this route runs about 56.1 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 18 miles or 23m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 41.7 miles or 49m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 20m
Traffic, exits, and arrival timing usually matter more near Lafayette, LA than in the middle of the route.
Before You Leave
+
Open the route before leaving Sulphur, LA so your first major turns are already loaded.
Day 1
Settle into the route from Sulphur, LA
This is one driving day of about 83.4 miles and 1h 37m.
Your first comfortable stop window is around 18 miles from Sulphur, LA.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 10 for about 56.1 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 6
5 decision points cluster between mile 0 and 83.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0 mi into trip|~0m in|US 90 / East Napoleon Street
Depart onto US 90 / East Napoleon Street
Lane positioning matters here
Use the straight lane.
4
80.7 mi into trip|~1h 31m in
Take the exit toward LA 182
Exit ramp - move to the correct lane early
Toward LA 182
5
81 mi into trip|~1h 31m in
Keep slight right at fork
Highway fork - watch signs carefully
6
83.2 mi into trip|~1h 36m in|Saint John Street
At end of road, turn right onto Saint John Street
Complex interchange - multiple decisions in a short stretch
5
83.3 mi into trip|~1h 36m in|Rue Vermilion Ouest
Turn left onto Rue Vermilion Ouest
Navigation decision point
Fuel & Cost
Regular Gas
$12.60 one way
$25.19 round trip
$3.84/gal25.4 MPG avg29 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.21
$13.83
$27.65
premium
$4.56
$14.97
$29.94
diesel
$5.61
$18.41
$36.83
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$13
Meals
$25–$50
Total
$38–$63
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 29.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $9 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
25
0
$8.76
$4.00
Efficient EV
20.9
0
$7.30
$3.34
EV Truck/SUV
33.4
0
$11.68
$5.34
Gas CO2
29 kg
EV CO2
10 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 17, 2026
Origin
Sulphur, LA
Late night
in Sulphur on Sunday
Local time
3:00 AM
CDT
Current temp
81°F
Unavailable
Live forecast
Destination
Lafayette, LA
Late night
in Lafayette on Sunday
Local time
3:00 AM
CDT
Current temp
61°F
Unavailable
Live forecast
78°F
Jennings, LA
42 mi in
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
20 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
1h 37m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a high-speed interstate cruise, as this route keeps you off the major highways entirely. You will spend your time navigating roads like LA 182, North University Avenue, and Versailles Boulevard. Because the highway share is 0%, you won't experience long, uninterrupted stretches of open road; instead, the driving experience is defined by local maneuvers. The longest stretch you will encounter is 0 miles on LA 182, indicating a constant series of turns that require your full attention behind the wheel. It is a practical, hands-on drive that keeps you engaged with the local landscape throughout the entire 83.5-mile duration.
90% highway — fuel and pacing are the main things to plan.
10 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 56.1 mi on I 10.
How Hard Is This Drive?
2/10
This is a straightforward highway drive that stays mostly on I 10 and US 90. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes early in the drive near US 90 / East Napoleon Street.
Driving Effort2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Sulphur, LA to Lafayette, LA is easy. At 1h 37m with 90% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: near the start (US 90 / East Napoleon Street): Lane positioning matters here; at 80.7 miles: Exit ramp - move to the correct lane early; at 81 miles: Highway fork - watch signs carefully.
Elevation Profile
Mostly flat terrain
42 ft11 ft
Total Climb
59 ft
Total Descent
37 ft
Highest Point
42 ft
~23.8 mi in
Elevation Range
32 ft
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 37m. Total distance: 83.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
The longest stretch is about 56.1 miles on I 10. The full list of main roads is in the Roads section above.
Yes — we found about 1 rest area or service plaza within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: near the start (US 90 / East Napoleon Street): Lane positioning matters here; at 80.7 miles: Exit ramp - move to the correct lane early; at 81 miles: Highway fork - watch signs carefully.
Yes. A round trip is manageable in a single day if you plan a break at Lafayette, LA before heading back.
