The drive from Buffalo, NY to Smithtown, NY covers 423.2 miles and takes about 8h 51m behind the wheel.
It usually feels better as a 2-day road trip than as one long push.
The route leans on Southern Tier Expressway, Keystone Shortway, I 81 for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 104.5 miles on Southern Tier Expressway.
At current regular gas prices, budget about $69.66 one way before food or hotel costs.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
211.6 miles from Buffalo, NY
A natural place for your longest stop of the day
, about 4h 28m into the drive
.
Drive Character
This is a 8h 51m highway drive covering 423.2 miles, with most of the trip on Southern Tier Expressway and Keystone Shortway. The longest continuous stretch is about 104.5 miles on Southern Tier Expressway.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 63 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Southern Tier Expressway is the longest continuous segment at about 104.5 miles.
Elevation Profile
Hilly terrain with moderate elevation changes
1,877 ft54 ft
Total Climb
3,242 ft
Total Descent
3,786 ft
Highest Point
1,877 ft
~272.1 mi in
Elevation Range
1,823 ft
Notable High Points
1,522 ft at ~30.2 miles+919 ft prominence
1,877 ft at ~272.1 miles+739 ft prominence
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Southern Tier Expressway and Keystone Shortway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.4 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 39 significant decision points across 423.2 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 0.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 5.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 7.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 39 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
9
0.4 mi into trip|~1m in
Keep slight left at fork toward I 190 South, NY 5 West: Skyway
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the left / right lanes.
Toward I 190 South, NY 5 West: Skyway
8
5.5 mi into trip|~8m in
Keep slight right at fork toward I 90 West: Erie
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 54-61
Toward I 90 West: Erie
8
7.1 mi into trip|~10m in
Take the exit toward NY 400, NY 16: West Seneca, East Aurora
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 54
Toward NY 400, NY 16: West Seneca, East Aurora
9
255.8 mi into trip|~5h 20m in|US 6
Keep slight right at fork onto US 6 toward I 84 East, I 380 South, US 6 East: Carbondale, Mt Pocono
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Exit 187
Toward I 84 East, I 380 South, US 6 East: Carbo...
9
370.7 mi into trip|~7h 37m in
Keep slight right at fork toward Leonia, Teaneck
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 70A-B
Toward Leonia, Teaneck
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Buffalo, NY and Smithtown, NY, road signs point toward Mt Pocono, Milford, New York City, Leonia, Teaneck and George Washington Bridge Upper Level - among others.
The midpoint is around 211.6 miles from Buffalo, NY, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Southern Tier Expressway if your tank is already low. That segment runs about 104.5 miles.
Overnight split
Hotel stop
For a steadier pace, wrap day one after about 212 miles or 4.4 hours on the road.
Arriving in Smithtown, NY
The final approach into Smithtown, 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 Smithtown, NY.
On a multi-day trip, keep the last day a little lighter so you reach Smithtown, NY with some flexibility left in the schedule.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
National Parks Near This Route
Worth a detour if your schedule allows.
Hamilton Grange National Memorial
National Memorial
Merchant’s clerk, Revolutionary War soldier, first Secretary Treasury of the United States: Alexander Hamilton’s life is memorialized at The Grange, the home he built on a country estate in uptown Man...
5 mi from route
~12 min detour
Free
near mile 379.4
The final resting place of President Ulysses S. Grant and his wife, Julia, is the largest mausoleum in North America. It testifies to a people’s gratitude for the man who ended the bloodiest conflict...
6 mi from route
~14 min detour
Free
near mile 379.4
Before the 1960s, almost everything about living authentically as a lesbian, a bisexual person or a gay man was illegal. The Stonewall Uprising on June 28, 1969 is a milestone in the quest for civil r...
10 mi from route
~25 min detour
Free
near mile 379.4
The African Burial Ground stands as the oldest and largest known excavated burial site in North America for both free and enslaved Africans. It offers a profound testament to the enduring legacy of Af...
11 mi from route
~28 min detour
Free
near mile 379.4
Located at the southern tip of Manhattan, Castle Clinton marks the place where New York City began and reflects the growth of both the city and the nation. Built to defend the harbor during the War of...
12 mi from route
~31 min detour
Free
near mile 379.4
Here at Federal Hall, George Washington took the oath of office as the first President of the United States, marking the beginning of the American constitutional republic. This historic site served as...
12 mi from route
~30 min detour
Free
near mile 379.4
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$69.66 one way
$139.32 round trip
$4.18/gal25.4 MPG avg148 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.52
$75.33
$150.65
premium
$4.92
$82.02
$164.05
diesel
$5.61
$93.44
$186.87
Estimated Tolls: $23.12
George Washington Bridge
$16.00
Throgs Neck Bridge
$6.55
Jericho Turnpike
(3.9 mi)$0.27
Niagara Thruway
(4.9 mi)$0.24
New York State Thruway
(1.3 mi)$0.06
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$70
Tolls
$23
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$223–$333
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 148.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $44 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
127
1
$44.44
$20.31
Efficient EV
105.8
1
$37.03
$16.93
EV Truck/SUV
169.3
2
$59.25
$27.08
Gas CO2
148 kg
EV CO2
50 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 16, 2026
Origin
Buffalo, NY
Morning
in Buffalo on Friday
Local time
8:44 AM
EDT
Current temp
50°F
Unavailable
Live forecast
Destination
Smithtown, NY
Morning
in Smithtown on Friday
Local time
8:44 AM
EDT
Current temp
86°F
Mostly Sunny
SW 3 to 10 mph4% chanceLive forecast
57°F
Ramapo, NY
212 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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
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
36 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
8h 51m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Buffalo, NY to Smithtown, NY covers 423.2 miles and takes about 8h 51m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Southern Tier Expressway, Keystone Shortway, I 81. Most of the drive stays on highways, so watch for ramps and exits.
Consider an overnight stop or starting very early.
Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 212 miles on day one.
The midpoint is about 211.6 miles from Buffalo, NY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $69.66 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 is a demanding drive. With 39 significant decision points across 423.2 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 0.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 5.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 7.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Between Buffalo, NY and Smithtown, NY, road signs point toward Mt Pocono, Milford, New York City, Leonia, Teaneck and George Washington Bridge Upper Level - among others.
Hilly terrain with moderate elevation changes. The route ranges from 54 ft to 1,877 ft elevation with about 3,242 ft of total climbing. There are 2 notable high points along the way.
Yes. Nearby national parks include Hamilton Grange National Memorial, General Grant National Memorial and Stonewall National Monument. There are 6 parks within detour distance of this route.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from
OSRM
over
OpenStreetMap.
Fuel cost uses
EIA
weekly regional averages.
Elevation is sampled from
USGS 3DEP.
National park proximity is from the
NPS API.
Pages are published only after passing our data-quality checks; our
methodology page
documents refresh cadence, editorial standards, and known limitations.
