Drive Time
17m
Distance
12.2 mi
20 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$2
one way
The drive from Smithtown, NY to Port Jefferson, NY covers 12.2 miles and takes about 17m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Nicolls Road, Nesconset Highway, Middle Country Road for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 3.2 miles on Nicolls Road. At current regular gas prices, budget about $1.99 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
0 planned breaks
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
6.1 miles from Smithtown, NY
A natural place for your longest stop of the day , about 8m into the drive .
Expect a 17m drive with frequent turns across 12.2 miles of local and secondary roads.
Mostly flat terrain
Total Climb
242 ft
Total Descent
291 ft
Highest Point
204 ft
~7.1 mi in
Elevation Range
199 ft
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. Navigation is very simple — set it and forget it for most of the drive. The trickiest moment comes around 5.6 miles in near CR 97 / Nicolls Road.
Very easy - short and simple to drive
The drive from Smithtown, NY to Port Jefferson, NY is easy. At 17m with 8% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 5.6 miles (CR 97 / Nicolls Road): Lane positioning matters here; at 8.8 miles: Exit ramp - move to the correct lane early; at 12.2 miles (NY 25A / Main Street): Navigation decision point.
These are the spots where you need to pay the most attention. Preview them before you drive.
Turn left onto CR 97 / Nicolls Road
Lane positioning matters here
Take the exit
Exit ramp - move to the correct lane early
Turn right onto NY 25A / Main Street
Navigation decision point
| Road | Distance | Duration |
|---|---|---|
| Nicolls Road | 3.2 mi | 4m |
| Nesconset Highway | 2.3 mi | 2m |
| Middle Country Road | 2 mi | 3m |
| West Main Street | 1.3 mi | 2m |
| Main Street | 1.2 mi | 1m |
| Route 25A | 1 mi | 1m |
| West Broadway | 0.9 mi | 1m |
| North Country Road | 0.3 mi | <1m |
Step-by-step road directions between Smithtown, NY and Port Jefferson, NY.
Start on NY 25; NY 25A
Continue on NY 25
Turn left onto NY 347
Turn left onto CR 97
Take the exit
Turn straight onto NY 25A
Continue on NY 25A
Continue on NY 25A
Continue on NY 25A
Turn right onto NY 25A
Arrive at destination
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.
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 12.2 miles or 17m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 6.1 miles or 8m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 15m
Traffic, exits, and arrival timing usually matter more near Port Jefferson, NY than in the middle of the route.
Open the route before leaving Smithtown, NY 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.
Day 1
Settle into the route from Smithtown, NY
This is one driving day of about 12.2 miles and 17m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 6.1 mi from Smithtown, NY · 8m into the drive
Mid-route town
Meal stop
6 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
A short stop after about 12.2 miles helps settle the day before fatigue starts building.
The midpoint is around 6.1 miles from Smithtown, NY, which is a good place for a longer meal and fuel stop.
The final approach into Port Jefferson, NY usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Port Jefferson, NY.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$1.99 one way
$3.97 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.48 | $2.15 | $4.30 |
| premium | $4.88 | $2.35 | $4.69 |
| diesel | $5.64 | $2.71 | $5.42 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$2
Meals
$25–$50
Total
$27–$52
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 4.3 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $1 in charging · 0 stops · 75% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 3.7 | 0 | $1.28 | $0.59 |
| Efficient EV | 3.1 | 0 | $1.07 | $0.49 |
| EV Truck/SUV | 4.9 | 0 | $1.71 | $0.78 |
Gas CO2
4 kg
EV CO2
1 kg (75% 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. If you're planning ahead, check the forecast closer to your travel date.
Origin
Night in Smithtown on Saturday
Local time
10:50 PM
EDT
Current temp
38°F
Clear
Flood Warning
Flood Warning issued April 11 at 2:05PM EDT by NWS Binghamton NY
Special Weather Statement
Special Weather Statement issued April 11 at 4:31AM EDT by NWS Upton NY
Destination
Night in Port Jefferson on Saturday
Local time
10:50 PM
EDT
Current temp
40°F
Clear
Flood Warning
Flood Warning issued April 11 at 2:05PM EDT by NWS Binghamton NY
Special Weather Statement
Special Weather Statement issued April 11 at 4:31AM EDT by NWS Upton NY
Along the Route
51°F
Brentwood, NY
6 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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Thanks for your feedback!
Your tip has been submitted. Thanks!
/500
Recent Tips
·
Explore more options from Smithtown, NY or browse trips ending in Port Jefferson, NY.
Looking for more statewide routes? Browse NY road trips.
Explore maps for Smithtown, NY or Port Jefferson, NY on MapSof.net.
