The drive from Smithfield, NY to Islip, NY covers 125.4 miles and takes about 2h 59m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on State Highway 22, I 684, Southern State Parkway for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 33.6 miles on State Highway 22.
At current regular gas prices, budget about $20.64 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
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
62.7 miles from Smithfield, NY
A natural place for your longest stop of the day
, about 1h 30m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 59m. Total distance: 125.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 59m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (88%). Some complex stretches to watch for.
Drive Character
This is a 2h 59m highway drive covering 125.4 miles, with most of the trip on State Highway 22 and I 684. The longest continuous stretch is about 33.6 miles on State Highway 22.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 37 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
State Highway 22 is the longest continuous segment at about 33.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on State Highway 22 and I 684. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 66 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 21 significant decision points across 125.4 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 66 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 81.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 81.1 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 21 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
9
66 mi into trip|~1h 34m in
Keep slight left at fork toward Hutchinson River Parkway, New York City
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight lane.
Exit 1
Toward Hutchinson River Parkway, New York City
8
81.1 mi into trip|~1h 55m in
Take the exit toward I 95 South: George Washington Bridge, Stillwell Avenue
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 2A
Toward I 95 South: George Washington Bridge, St...
8
81.1 mi into trip|~1h 55m in
Keep slight right at fork toward I 95 South: George Washington Bridge
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / right lanes.
Toward I 95 South: George Washington Bridge
9
83.1 mi into trip|~1h 59m in|I 695 / Throgs Neck Expressway
Keep slight left at fork onto I 695 / Throgs Neck Expressway toward I 695 South: Throgs Neck Bridge, Long Island
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Exit 7A
Toward I 695 South: Throgs Neck Bridge, Long Is...
9
120.8 mi into trip|~2h 50m in
Take the exit toward Bay Shore Road South, Bay Shore
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 41S
Toward Bay Shore Road South, Bay Shore
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Smithfield, NY and Islip, NY, road signs point toward New York City, Long Island, Cross Island Parkway South, Southern State Parkway East and Eastern Long Island.
New York City
66 mi in|~1h 34m
Long Island
83.1 mi in|~1h 59m|via I 695
Cross Island Parkway South
94.1 mi in|~2h 15m
Southern State Parkway East
95.6 mi in|~2h 17m
Eastern Long Island
95.6 mi in|~2h 17m
Main Roads
Road
Distance
Duration
State Highway 22
33.6 mi
50m
I 684
27.4 mi
32m
Southern State Parkway
24.7 mi
31m
Hutchinson River Parkway
13.6 mi
19m
Clearview Expressway
5 mi
5m
Smithfield Valley Road
2.6 mi
6m
Throgs Neck Expressway
2.2 mi
3m
Throgs Neck Bridge
2 mi
3m
Longest stretch:
State Highway 22
— 33.6 mi, about 50m
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithfield, NY and Islip, NY.
1
Start on Smithfield Valley Road
72 ft·3 sec·Smithfield Valley Road
2
Continue on CR 83
0.7 mi·1 min·Sn Fri Road
3
Continue on CR 83
2.6 mi·6 min·Smithfield Valley Road
4
Merge onto US 44
1.2 mi·1 min·US 44
5
Turn right onto West Lake Amenia Road
0.5 mi·1 min·West Lake Amenia Road
6
Turn sharp right onto NY 22; NY 343
34 mi·50 min·State Highway 22
Use the straight / right lanes.
7
Continue on I 684
27 mi·32 min·I 684
8
Keep slight left at fork
1.5 mi·2 min
Exit 1Toward Hutchinson River Parkway, New York CityUse the straight lane.
9
Merge onto Hutchinson River Parkway
7.7 mi·10 min·Hutchinson River Parkway
Use the straight / slight right lanes.
10
Keep slight right at fork onto Hutchinson River Parkway
5.9 mi·8 min·Hutchinson River Parkway
Toward Whitestone BridgeUse the straight / slight right lanes.
11
Take the exit
141 ft·4 sec
Exit 2AToward I 95 South: George Washington Bridge, Stillwell AvenueUse the straight / slight right lanes.
12
Keep slight right at fork
0.2 mi·47 sec
Toward I 95 South: George Washington BridgeUse the straight / right lanes.
13
Merge onto I 95
0.4 mi·31 sec·New England Thruway
14
Continue on I 95
1.3 mi·2 min·Bruckner Expressway
Use the straight / right lanes.
15
Keep slight left at fork onto I 695
2.2 mi·3 min·Throgs Neck Expressway
Exit 7AToward I 695 South: Throgs Neck Bridge, Long IslandUse the slight left / slight right lanes.
16
Continue on I 295
2.0 mi·3 min·Throgs Neck Bridge
Use the straight / slight right lanes.
17
Continue on I 295
5.0 mi·5 min·Clearview Expressway
Use the straight / slight right lanes.
18
Continue on NY 24
0.7 mi·1 min·Hollis Court Boulevard
Use the straight lane.
19
At end of road, turn left onto NY 24
0.2 mi·35 sec·Jamaica Avenue
Use the left lane.
20
Turn right onto Hempstead Avenue
0.9 mi·2 min·Hempstead Avenue
21
Turn right onto 225th Street
228 ft·9 sec·225th Street
Use the right lane.
22
Take the ramp
0.2 mi·28 sec
Toward Cross Island Parkway South, Verrazano Bridge
23
Merge onto CI
1.3 mi·1 min·Cross Island Parkway
Use the straight / slight right lanes.
24
Take the exit
0.5 mi·1 min
Exit 25AToward Southern State Parkway East, Eastern Long IslandUse the slight left / straight lanes.
25
Merge onto SO
25 mi·31 min·Southern State Parkway
Use the straight / slight right lanes.
26
Keep slight left at fork onto SO
0.2 mi·16 sec·Southern State Parkway
Use the straight / slight right lanes.
27
Take the exit
0.2 mi·31 sec
Exit 41SToward Bay Shore Road South, Bay ShoreUse the slight right lane.
28
Turn straight onto CR 57
0.5 mi·1 min·Bay Shore Road
29
Continue on CR 57
0.3 mi·43 sec·Howells Road
30
Turn straight onto CR 57
341 ft·6 sec·Sunrise Highway
31
Keep slight right at fork onto CR 57
0.6 mi·1 min·Howells Road
Toward Howells Road SouthUse the right lane.
32
Continue on CR 57
0.2 mi·24 sec·Roosevelt Street
33
Continue on CR 57
0.7 mi·1 min·3rd Avenue
34
At end of road, turn left onto NY 27A
1.1 mi·1 min·East Main Street
35
Continue on Montauk Highway
0.2 mi·17 sec·Montauk Highway
36
Continue on NY 27A
0.8 mi·1 min·Main Street
37
Arrive at destination
NY 27A
Trip Plan
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.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 62.7 miles from Smithfield, NY, or about 1h 30m into the drive.
The longest continuous stretch on this route runs about 33.6 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 28 miles or 46m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 62.7 miles or 1h 30m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 27m
Traffic, exits, and arrival timing usually matter more near Islip, NY than in the middle of the route.
Before You Leave
+
Open the route before leaving Smithfield, 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 Smithfield, NY
This is one driving day of about 125.4 miles and 2h 59m.
Your first comfortable stop window is around 28 miles from Smithfield, NY.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on State Highway 22 for about 33.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 62.7 mi from Smithfield, NY
· 1h 30m into the drive
Place data sourced from public business listings. Hours and availability may vary.
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...
7 mi from route
~17 min detour
Free
near mile 82.2
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...
8 mi from route
~19 min detour
Free
near mile 82.2
Immerse yourself in an enchanting collage of coastal life and history. Rhythmic waves, high dunes, ancient maritime forests, historic landmarks and glimpses of wildlife, Fire Island has been a special...
11 mi from route
~28 min detour
Free
near mile 125.4
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...
12 mi from route
~31 min detour
Free
near mile 90.8
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...
12 mi from route
~29 min detour
Free
near mile 86.5
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...
13 mi from route
~33 min detour
Free
near mile 90.8
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $13 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
37.6
0
$13.17
$6.02
Efficient EV
31.4
0
$10.97
$5.02
EV Truck/SUV
50.2
0
$17.56
$8.03
Gas CO2
44 kg
EV CO2
15 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 15, 2026
Origin
Smithfield, NY
Night
in Smithfield on Thursday
Local time
10:12 PM
EDT
Current temp
42°F
Unavailable
Live forecast
Destination
Islip, NY
Night
in Islip on Thursday
Local time
10:12 PM
EDT
Current temp
44°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
2 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
2h 59m 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.
Frequently Asked Questions
The drive from Smithfield, NY to Islip, NY covers 125.4 miles and takes about 2h 59m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are State Highway 22, I 684, Southern State Parkway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 62.7 miles from Smithfield, NY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $20.64 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 21 significant decision points across 125.4 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 66 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 81.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 81.1 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Between Smithfield, NY and Islip, NY, road signs point toward New York City, Long Island, Cross Island Parkway South, Southern State Parkway East and Eastern Long Island.
