Traveling from Islip to Watervliet covers 194.5 miles, a journey that typically takes about 4 hours and 6 minutes. Because this is a highway-focused drive, you can easily complete the trip in a single day, making it an efficient way to traverse the Northeast region. You should budget approximately $32 for fuel to cover the distance. Navigating via the Southern State Parkway, NJ 17, and NY 17, you will transition from Long Island through parts of New Jersey before heading north toward the Capital District. This route is straightforward for those who prefer staying on major thoroughfares rather than navigating complex local roads. It serves as a practical connection between these two points in New York state.
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
97.3 miles from Islip, NY
A natural place for your longest stop of the day
, about 2h 9m into the drive
.
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
I 787
8.4 mi
11m
NJ 4
6.7 mi
9m
Cross Bronx Expressway
6.6 mi
8m
Clearview Expressway
5 mi
5m
Throgs Neck Bridge
2 mi
3m
Longest stretch:
NY 17
— 111.7 mi, about 2h 8m
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip, NY and Watervliet, 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
8.4 mi·11 min·I 787
Use the straight / slight right lanes.
46
Take the exit onto 8
0.2 mi·35 sec·8
Exit 8Toward Watervliet, Green IslandUse the slight right lane.
47
Turn left onto 23rd Street
0.2 mi·38 sec·23rd Street
Use the straight lane.
48
Turn left onto NY 32
0.2 mi·33 sec·2nd Avenue
49
Turn left onto NY 2
334 ft·9 sec·19th Street
Use the left lane.
50
Continue on NY 2
0.2 mi·33 sec·Congress Street
51
Turn slight right
0.1 mi·29 sec
52
Turn right onto Division Street
221 ft·6 sec·Division Street
53
Continue on Front Street
0.2 mi·27 sec·Front Street
54
Turn right onto Congress Street
217 ft·10 sec·Congress Street
55
Turn right onto NY 2
438 ft·12 sec·River Street
56
Continue on NY 2
0.3 mi·48 sec·19th Street
57
Arrive at destination
NY 2
Trip Plan
To keep your drive smooth, plan for at least one dedicated stop to stretch your legs during the 4-hour trek. Leaving Islip early in the day is your best strategy to avoid potential congestion on the Southern State Parkway and the initial highway sections. Since you are facing a longest stretch of 111.7 miles on NY 17, ensure your fuel tank is topped off before hitting that section to avoid unnecessary mid-stretch detours. Given the 1-day recommended duration, you have plenty of flexibility to adjust your pace based on real-time traffic conditions. Keep a close watch on your GPS, as transitioning between these major roads requires navigating several key interchanges.
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 97.3 miles from Islip, NY, or about 2h 9m 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 43 miles or 1h in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 97.3 miles or 2h 9m 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 20m
Traffic, exits, and arrival timing usually matter more near Watervliet, 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 194.5 miles and 4h 6m.
Your first comfortable stop window is around 43 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.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 34
5 decision points cluster between mile 3.6 and 50.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
Fuel & Cost
Regular Gas
$32.02 one way
$64.03 round trip
$4.18/gal25.4 MPG avg68 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.52
$34.62
$69.24
premium
$4.92
$37.70
$75.40
diesel
$5.61
$42.94
$85.89
Estimated Tolls: $22.55
George Washington Bridge
$16.00
Throgs Neck Bridge
$6.55
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
$32
Tolls
$23
Meals
$25–$50
Total
$80–$105
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 68.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $20 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
58.3
0
$20.42
$9.34
Efficient EV
48.6
0
$17.02
$7.78
EV Truck/SUV
77.8
0
$27.23
$12.45
Gas CO2
68 kg
EV CO2
23 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 13, 2026
Origin
Islip, NY
Late night
in Islip on Tuesday
Local time
4:10 AM
EDT
Current temp
54°F
Slight Chance Rain Showers then Areas Of Fog
SW 5 to 14 mph15% chanceLive forecast
Flood Warning
Flood Warning issued April 13 at 11:26AM EDT until April 15 at 8:00AM EDT by NWS Binghamton NY
Destination
Watervliet, NY
Late night
in Watervliet on Tuesday
Local time
4:10 AM
EDT
Current temp
39°F
Unavailable
Live forecast
63°F
Ramapo, NY
97 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
15 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 6m 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.
More Details
What kind of drive is this?
With 93% of the journey spent on highways, this route is designed for steady progress rather than winding exploration. You will spend a significant portion of your time on NY 17, which features the longest uninterrupted stretch of 111.7 miles. Expect the road's personality to shift as you move from the high-traffic parkways of the New York City metro area onto the more open, high-speed highway segments. It is a functional, efficient drive that prioritizes speed and directness over technical or scenic detours. Staying alert is key, as the mix of fast-moving highways and varying traffic densities requires consistent focus from behind the wheel.
93% highway — fuel and pacing are the main things to plan.
57 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 111.7 mi on NY 17.
How Hard Is This Drive?
10/10
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 34 significant decision points across 194.5 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.
Elevation Profile
Mostly flat terrain
624 ft12 ft
Total Climb
951 ft
Total Descent
938 ft
Highest Point
624 ft
~111.1 mi in
Elevation Range
612 ft
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 Watervliet, NY, road signs point toward Cross Island Parkway North, Hempstead Avenue West, Grandstand, Upper Level, Njtp South: Hackensack and Gsp South - among others.
Islip (pronounced "ICE-lip") is a town on Long Island in the state of New York. Located within Suffolk County, the Town of Islip includes the villages of Brightwaters, Islandia, Ocean Beach and Saltaire. It also includes numerous hamlets including Bay Shore and Sayville which are ferry terminals for Fire Island. Other prominent communities are Bayport, Brentwood, Central Islip, Hauppauge, Islip village (the town seat), and Ronkonkoma.
Top landmarks
•Bayport Aerodrome — airport in Suffolk County, New York, United States
•Connetquot River State Park Preserve — state park in New York
•Modesty — oyster-dredging sloop built in Long Island
Doable as a same-day drive at 4h 6m. Total distance: 194.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 6m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (93%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 111.7 miles on NY 17. The full list of main roads is in the Roads section above.
Expect about $22.55 in tolls one way, starting with George Washington Bridge. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Watervliet, NY before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
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.
Possible but tiring. At 4.1 hours each way, an in-and-out day trip would put you behind the wheel for 8.2 hours — manageable with a long break at Watervliet, NY, but most travelers stay overnight.
