This 200.1-mile journey from Islip, NY, to Poestenkill, NY, is designed for a single day of driving, estimated to take about 4 hours and 15 minutes. Primarily following NY 17 and the Southern State Parkway, with a segment on NJ 17, this route is heavily highway-focused, with 91% of the drive on high-speed roads. The estimated fuel cost for this trip is around $33. Given its manageable distance and duration, it’s a straightforward trip that doesn't necessarily require an overnight stop. You'll experience a consistent driving pace for most of the way, making it an efficient option for getting between these two Northeast locations.
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
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
100 miles from Islip, NY
A natural place for your longest stop of the day
, about 2h 12m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 15m. Total distance: 200.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 15m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (91%). Some complex stretches to watch for.
Drive Character
Expect a drive that's predominantly on highways, accounting for 91% of the total distance. This means you'll be on fast-paced roads for the majority of your 200.1 miles. The longest uninterrupted stretch you'll encounter is a significant 111.7 miles along NY 17, offering extended periods of steady driving. While the focus is on highway travel, the transition between different parkways and state routes will provide some variation in the driving experience, keeping it from being entirely monotonous. This highway-focused profile suggests a route geared towards efficient travel rather than extensive sightseeing.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 55 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
NY 17 is the longest continuous segment at about 111.7 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on NY 17 and Southern State Parkway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 3.6 miles in near CR 57 / Howells Road.
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 33 significant decision points across 200.1 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 3.6 miles (CR 57 / Howells Road): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 31.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 31.2 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 33 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
9
3.6 mi into trip|~6m in|CR 57 / Howells Road
Keep slight right at fork onto CR 57 / Howells Road toward Howells Road, Deer Park
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the right lane.
Toward Howells Road, Deer Park
8
31.1 mi into trip|~43m in
Keep slight left at fork toward NY 24 West: Hempstead Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward NY 24 West: Hempstead Avenue
8
31.2 mi into trip|~43m in
Keep slight right at fork toward Hempstead Avenue West
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward Hempstead Avenue West
8
50 mi into trip|~1h 10m in
Take the exit toward I 95 South, NJTP South: Hackensack
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.
Toward I 95 South, NJTP South: Hackensack
9
50.3 mi into trip|~1h 11m in
Keep slight right at fork toward NJ 4 West: Paramus
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 72A
Toward NJ 4 West: Paramus
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Islip, NY and Poestenkill, NY, road signs point toward Cross Island Parkway North, Hempstead Avenue West, Grandstand, Upper Level, Njtp South: Hackensack and Gsp South - among others.
Cross Island Parkway North
29.4 mi in|~40m
Hempstead Avenue West
31.1 mi in|~43m
Grandstand
31.3 mi in|~43m
Upper Level
47.5 mi in|~1h 6m|via I 95; US 1
Njtp South: Hackensack
50 mi in|~1h 10m
Gsp South
57.1 mi in|~1h 20m
Gsp North
57.1 mi in|~1h 20m
Newark
57.1 mi in|~1h 20m
Mahwah
57.1 mi in|~1h 20m
New York State Thruway North: Albany
72.4 mi in|~1h 40m|via NY 17
Troy
184.1 mi in|~3h 49m
Boston
187.5 mi in|~3h 54m
Main Roads
Road
Distance
Duration
NY 17
111.7 mi
2h 8m
Southern State Parkway
24.7 mi
31m
NJ 17
14.7 mi
18m
NJ 4
6.7 mi
9m
Cross Bronx Expressway
6.6 mi
8m
NY 43
6.3 mi
11m
Clearview Expressway
5 mi
5m
I 787
3.1 mi
4m
Longest stretch:
NY 17
— 111.7 mi, about 2h 8m
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip, NY and Poestenkill, NY.
1
Start on NY 27A
0.8 mi·1 min·Main Street
2
Continue on Montauk Highway
0.2 mi·19 sec·Montauk Highway
3
Continue on NY 27A
1.1 mi·1 min·Main Street
4
Turn right onto 3rd Avenue
0.6 mi·1 min·3rd Avenue
5
Continue on CR 57
0.3 mi·36 sec·Rossevelt Street
6
Continue on CR 57
0.7 mi·1 min·Howells Road
Use the left lane.
7
Turn straight onto Sunrise Highway
163 ft·3 sec·Sunrise Highway
8
Keep slight right at fork onto CR 57
0.3 mi·36 sec·Howells Road
Toward Howells Road, Deer ParkUse the right lane.
9
Continue on CR 57
0.6 mi·1 min·Bay Shore Road
10
Take the ramp
0.1 mi·19 sec
Toward SO West: New York
11
Continue on this road
363 ft·8 sec·this road
12
Merge onto SO
25 mi·31 min·Southern State Parkway
Use the straight / right lanes.
13
Take the exit
0.3 mi·43 sec
Toward Cross Island Parkway North, Whitestone BridgeUse the slight right lane.
14
Merge onto CI
1.3 mi·1 min·Cross Island Parkway
15
Take the exit
317 ft·9 sec
Exit 26BToward NY 24: UBS Arena-Belmont ParkUse the slight right lane.
16
Keep slight left at fork
437 ft·12 sec
Toward NY 24 West: Hempstead AvenueUse the slight left / slight right lanes.
17
Keep slight right at fork
0.1 mi·15 sec
Toward Cross Island Parkway North, Hempstead Avenue West
18
Keep slight right at fork
266 ft·8 sec
Toward Hempstead Avenue WestUse the slight left / slight right lanes.
19
Continue on this road
0.1 mi·13 sec·this road
Toward Grandstand, Hempstead Avenue West
20
Keep slight left at fork
100 ft·4 sec
Toward Hempstead Avenue
21
Turn right onto NY 24
1.0 mi·2 min·Hempstead Avenue
Use the right lane.
22
Turn left onto Jamaica Avenue
0.1 mi·17 sec·Jamaica Avenue
23
Turn right onto NY 24
0.7 mi·1 min·212th Street
24
Continue on I 295
5.0 mi·5 min·Clearview Expressway
Toward I 295 North: Clearview Expressway, Through Neck BridgeUse the straight / slight right lanes.
25
Continue on I 295
2.0 mi·3 min·Throgs Neck Bridge
26
Continue on I 295
0.7 mi·1 min·Throgs Neck Expressway
Use the straight / slight right lanes.
27
Keep slight left at fork onto I 295
6.6 mi·8 min·Cross Bronx Expressway
Use the straight / slight right lanes.
28
Keep slight left at fork onto I 95; US 1
0.7 mi·1 min·Trans-Manhattan Expressway
Toward Upper Level
29
Continue on I 95; US 1
0.6 mi·59 sec·George Washington Bridge (upper level)
30
Continue on I 95 EXPR; US 1 EXPR; US 9 EXPR
0.5 mi·48 sec·I 95 EXPR; US 1 EXPR; US 9 EXPR
31
Keep slight left at fork onto I 95 EXPR; US 1 EXPR; US 9 EXPR
0.6 mi·39 sec·I 95 EXPR; US 1 EXPR; US 9 EXPR
Use the straight / slight right lanes.
32
Keep slight left at fork onto I 95 EXPR; NJTP
0.1 mi·8 sec·I 95 EXPR; NJTP
33
Take the exit
0.2 mi·22 sec
Toward I 95 South, NJTP South: HackensackUse the straight / slight right lanes.
34
Keep slight right at fork
0.2 mi·23 sec
Exit 72AToward NJ 4 West: ParamusUse the slight left / slight right lanes.
35
Merge onto NJ 4
6.7 mi·9 min·NJ 4
Use the slight right lane.
36
Take the exit
0.2 mi·26 sec
Toward GSP South, NJ 17 South, GSP North, NJ 17 North: Grand State Plaza, Newark, MahwahUse the straight lane.
37
Keep slight right at fork
0.2 mi·36 sec
Toward NJ 17 North: MahwahUse the straight / slight right lanes.
38
Merge onto NJ 17
3.3 mi·4 min·NJ 17
Use the straight / slight right lanes.
39
Continue on NJ 17
7.3 mi·9 min·NJ 17
Use the straight / right lanes.
40
Continue on NJ 17
0.7 mi·50 sec·NJ 17
41
Continue on NJ 17
3.3 mi·4 min·NJ 17
42
Continue on I 287; NY 17
0.2 mi·10 sec·I 287; NY 17
43
Keep slight left at fork onto NY 17
112 mi·2 hr 8 min·NY 17
Toward I 87 North, NY 17 North, New York State Thruway North: AlbanyUse the straight / slight right lanes.
44
Take the exit
0.3 mi·50 sec
Exit 23Toward I 787, US 9W: Albany, TroyUse the slight right lane.
45
Continue on I 787
3.1 mi·4 min·I 787
Use the straight / slight right lanes.
46
Take the exit
0.5 mi·37 sec
Exit 5Toward I 90: Buffalo, BostonUse the slight right lane.
47
Keep slight right at fork
0.3 mi·36 sec
Toward I 90 East: BostonUse the slight right lane.
48
Merge onto I 90
0.9 mi·59 sec·Patroon Island Bridge
Use the straight / slight right lanes.
49
Take the exit
1.0 mi·1 min
Exit 8Toward NY 43: DefreestvilleUse the slight right lane.
50
Continue on NY 43
6.3 mi·11 min·NY 43
51
Turn left onto NY 351
0.3 mi·31 sec·Reichards Lake Road
52
Continue on NY 351
1.3 mi·1 min·Reichard Lake Road
53
Continue on NY 351
2.1 mi·3 min·Round Top Road
54
Turn left onto NY 355
91 ft·1 sec·Main Street
55
Arrive at destination
NY 355
Trip Plan
With a 4-hour and 15-minute estimated drive time, this trip is well-suited for a single day. Consider departing early to take advantage of lighter traffic, especially if you're traveling on a weekday. You'll have one main stretch of 111.7 miles on NY 17 where you can settle into a rhythm between planned stops. With a fuel cost estimated at $33, it's a budget-friendly option. Plan for at least one fuel or rest stop to break up the journey, ensuring you remain comfortable and alert throughout the 200.1 miles. The highway-intensive nature of this route means you can maintain a consistent pace, making it easy to gauge your progress.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 100 miles from Islip, NY, or about 2h 12m into the drive.
The longest continuous stretch on this route runs about 111.7 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 44 miles or 1h 2m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 100 miles or 2h 12m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 26m
Traffic, exits, and arrival timing usually matter more near Poestenkill, NY than in the middle of the route.
Before You Leave
+
Open the route before leaving Islip, 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 Islip, NY
This is one driving day of about 200.1 miles and 4h 15m.
Your first comfortable stop window is around 44 miles from Islip, 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 NY 17 for about 111.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 100 mi from Islip, NY
· 2h 12m 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...
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...
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...
9 mi from route
~21 min detour
Free
near mile 48.3
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...
10 mi from route
~25 min detour
Free
near mile 48.3
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...
10 mi from route
~26 min detour
Free
near mile 48.3
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...
11 mi from route
~27 min detour
Free
near mile 48.3
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $21 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
60
0
$21.01
$9.60
Efficient EV
50
0
$17.51
$8.00
EV Truck/SUV
80
1
$28.01
$12.81
Gas CO2
70 kg
EV CO2
23 kg (67% 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 16, 2026
Origin
Islip, NY
Morning
in Islip on Friday
Local time
6:13 AM
EDT
Current temp
78°F
Mostly Sunny
SW 7 to 10 mph3% chanceLive forecast
Flood Warning
Flood Warning issued April 15 at 11:57PM EDT by NWS Binghamton NY
Destination
Poestenkill, NY
Morning
in Poestenkill on Friday
Local time
6:13 AM
EDT
Current temp
52°F
Unavailable
Live forecast
57°F
Ramapo, NY
100 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
26 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
4h 15m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Islip, NY to Poestenkill, NY covers 200.1 miles and takes about 4h 15m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are NY 17, Southern State Parkway, NJ 17. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 100 miles from Islip, NY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $32.94 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break 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 33 significant decision points across 200.1 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 3.6 miles (CR 57 / Howells Road): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 31.1 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 31.2 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Between Islip, NY and Poestenkill, NY, road signs point toward Cross Island Parkway North, Hempstead Avenue West, Grandstand, Upper Level, Njtp South: Hackensack and Gsp South - among others.
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.
EV charging comes from the
NREL Alternative Fuels
dataset.
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.
