Westport to Islip is 313.1 miles and takes about 6h 23m via I 87 and Southern State Parkway, with a fuel budget near $51 and enough daylight to finish in a day. This drive stays within New York, taking you from the Northeast region down to the southern part of the state. You'll experience a mix of highway cruising and surface road driving. Given the duration and distance, it's a manageable one-day trip, but consider starting earlier if you prefer a more relaxed pace with fewer stops.
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
156.6 miles from Westport, NY
A natural place for your longest stop of the day
, about 3h 4m into the drive
.
Main Roads
Road
Distance
Duration
I 87
118.6 mi
2h 17m
Adirondack Northway
116.9 mi
2h 16m
Southern State Parkway
24.7 mi
31m
NJ 17
14.1 mi
18m
NJ 4
6.7 mi
9m
Cross Bronx Expressway
6.6 mi
8m
Clearview Expressway
5 mi
5m
State Highway 9N
2.8 mi
4m
Longest stretch:
I 87
— 118.6 mi, about 2h 17m
Traffic on I-87
Hour-of-day weekday pattern from 60 FHWA count stations on your route.
Peak
4 PM
~2,496 veh/hr typical
· worst 3,286
Quietest
1 AM
~113 veh/hr
Peak-to-quiet ratio
22.1×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Westport, NY and Islip, NY.
1
Start on NY 9N
1.4 mi·2 min·Main Street
2
Continue on NY 9N
2.8 mi·4 min·State Highway 9N
3
Take the ramp
0.2 mi·18 sec
4
Merge onto I 87
117 mi·2 hr 16 min·Adirondack Northway
Use the slight right lane.
5
Keep slight right at fork onto I 87
0.3 mi·31 sec·I 87
Exit 1E-WToward I 87 South, I 90: Boston, Albany, New York, BuffaloUse the slight right lane.
6
Continue on I 87
0.5 mi·51 sec·I 87
Exit 1WToward I 87 South, I 90 West: New York, Buffalo
7
Keep slight right at fork onto I 87
118 mi·2 hr 16 min·I 87
Toward I 87 South: New YorkUse the straight / slight right lanes.
8
Keep slight right at fork onto NY 17
0.9 mi·59 sec·NY 17
Exit 15Toward I 287 South, NJ 17 South: New JerseyUse the slight right lane.
9
Continue on I 287; NJ 17
0.5 mi·39 sec·I 287; NJ 17
10
Keep slight left at fork onto NJ 17
14 mi·18 min·NJ 17
Exit 66Toward NJ 17 South: MahwahUse the slight left / straight lanes.
11
Take the exit
0.1 mi·19 sec
Toward NJ 4, GSP South: Paterson, Fort Lee, New York
12
Keep slight left at fork
0.5 mi·1 min
Toward NJ 4 East: Fort Lee, New York
13
Merge onto NJ 4
0.3 mi·24 sec·NJ 4
Use the right lane.
14
Continue on NJ 4
6.4 mi·8 min·NJ 4
Use the straight / slight right lanes.
15
Take the exit
0.2 mi·18 sec
Toward I 95 North: George Washington BridgeUse the straight / slight left lanes.
16
Merge onto I 95 EXPR
0.7 mi·54 sec·I 95 EXPR
Use the straight / slight right lanes.
17
Keep slight left at fork onto I 95 EXPR
0.8 mi·1 min·I 95 EXPR
18
Continue on I 95; US 1; US 9
0.6 mi·1 min·George Washington Bridge (upper level)
Use the straight / slight right lanes.
19
Continue on I 95; US 1
0.7 mi·1 min·Trans-Manhattan Expressway
20
Continue on I 95; US 1
4.7 mi·6 min·Cross Bronx Expressway
Use the straight / slight right lanes.
21
Keep slight right at fork onto I 295
2.0 mi·2 min·Cross Bronx Expressway
Exit 6BToward I 295 South: Throgs Neck BridgeUse the straight / slight left lanes.
22
Merge onto I 295
0.6 mi·58 sec·Throgs Neck Expressway
23
Continue on I 295
2.0 mi·3 min·Throgs Neck Bridge
Use the straight / slight right lanes.
24
Continue on I 295
5.0 mi·5 min·Clearview Expressway
Use the straight / slight right lanes.
25
Continue on NY 24
0.7 mi·1 min·Hollis Court Boulevard
Use the straight lane.
26
At end of road, turn left onto NY 24
0.2 mi·35 sec·Jamaica Avenue
Use the left lane.
27
Turn right onto Hempstead Avenue
0.9 mi·2 min·Hempstead Avenue
28
Turn right onto 225th Street
228 ft·9 sec·225th Street
Use the right lane.
29
Take the ramp
0.2 mi·28 sec
Toward Cross Island Parkway South, Verrazano Bridge
30
Merge onto CI
1.3 mi·1 min·Cross Island Parkway
Use the straight / slight right lanes.
31
Take the exit
0.5 mi·1 min
Exit 25AToward Southern State Parkway East, Eastern Long IslandUse the slight left / straight lanes.
32
Merge onto SO
25 mi·31 min·Southern State Parkway
Use the straight / slight right lanes.
33
Keep slight left at fork onto SO
0.2 mi·16 sec·Southern State Parkway
Use the straight / slight right lanes.
34
Take the exit
0.2 mi·31 sec
Exit 41SToward Bay Shore Road South, Bay ShoreUse the slight right lane.
35
Turn straight onto CR 57
0.5 mi·1 min·Bay Shore Road
36
Continue on CR 57
0.3 mi·43 sec·Howells Road
37
Turn straight onto CR 57
341 ft·6 sec·Sunrise Highway
38
Keep slight right at fork onto CR 57
0.6 mi·1 min·Howells Road
Toward Howells Road SouthUse the right lane.
39
Continue on CR 57
0.2 mi·24 sec·Roosevelt Street
40
Continue on CR 57
0.7 mi·1 min·3rd Avenue
41
At end of road, turn left onto NY 27A
1.1 mi·1 min·East Main Street
42
Continue on Montauk Highway
0.2 mi·17 sec·Montauk Highway
43
Continue on NY 27A
0.8 mi·1 min·Main Street
44
Arrive at destination
NY 27A
Trip Plan
For this 6h 23m drive, leaving Westport in the morning is your best bet to maximize daylight. You'll have one main stretch of 118.6 miles on I 87, so plan your fuel and rest stops accordingly, perhaps before or after this longer segment. With a fuel cost estimated at $51, it's a relatively economical trip. Since it's a one-day drive, you have flexibility, but be mindful of the 59% highway share, which can mean more traffic as you get closer to Islip.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 156.6 miles from Westport, NY, or about 3h 4m into the drive.
The longest continuous stretch on this route runs about 118.6 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 69 miles or 1h 22m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 156.6 miles or 3h 4m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 4m
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 Westport, 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 Westport, NY
This is one driving day of about 313.1 miles and 6h 23m.
Your first comfortable stop window is around 69 miles from Westport, 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 I 87 for about 118.6 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 26
5 decision points cluster between mile 121.3 and 308.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
9
121.3 mi into trip|~2h 23m in|I 87
Keep slight right at fork onto I 87 toward I 87 South, I 90: Boston, Albany, New York, Buffalo
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 1E-W
Toward I 87 South, I 90: Boston, Albany, New Yo...
9
239.9 mi into trip|~4h 41m in|NY 17
Keep slight right at fork onto NY 17 toward I 287 South, NJ 17 South: New Jersey
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 15
Toward I 287 South, NJ 17 South: New Jersey
8
241.3 mi into trip|~4h 43m in|NJ 17
Keep slight left at fork onto NJ 17 toward NJ 17 South: Mahwah
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / straight lanes.
Exit 66
Toward NJ 17 South: Mahwah
8
270.3 mi into trip|~5h 23m in|I 295 / Cross Bronx Expressway
Keep slight right at fork onto I 295 / Cross Bronx Expressway toward I 295 South: Throgs Neck Bridge
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight left lanes.
Exit 6B
Toward I 295 South: Throgs Neck Bridge
9
308.5 mi into trip|~6h 14m 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
Fuel & Cost
Regular Gas
$50.65 one way
$101.30 round trip
$4.11/gal25.4 MPG avg110 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.46
$54.97
$109.93
premium
$4.85
$59.76
$119.52
diesel
$4.80
$59.12
$118.24
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
$51
Tolls
$23
Meals
$25–$50
Total
$98–$123
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 109.5 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $33 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
93.9
1
$32.88
$15.03
Efficient EV
78.3
0
$27.40
$12.52
EV Truck/SUV
125.2
1
$43.83
$20.04
Gas CO2
110 kg
EV CO2
37 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 Jul 17, 2026
Origin
Westport, NY
Night
in Westport on Monday
Local time
10:18 PM
EDT
Current temp
83°F
Unavailable
Live forecast
Destination
Islip, NY
Night
in Islip on Monday
Local time
10:18 PM
EDT
Current temp
84°F
Areas Of Smoke
W 5 to 9 mph0% chanceLive 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
1 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
6h 23m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
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
~13 min detour
Free
near mile 269.9
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
~15 min detour
Free
near mile 269.9
In 1777, a large British invasion force met an equally large American army here at Saratoga. After two intense battles, an eight-mile retreat, and a three-day siege, British General John Burgoyne surr...
8 mi from route
~20 min detour
Free
near mile 97.2
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
~26 min detour
Free
near mile 269.9
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 269.9
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 313.1
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
You'll spend 59% of this 313.1-mile drive on highways, primarily I 87. The longest continuous stretch on a highway is 118.6 miles on I 87. Expect to transition from highway driving to surface roads partway through your trip. The extensive highway portion means you'll encounter numerous exits and potentially merge with other traffic as you approach more populated areas.
59% highway, the rest on surface roads — varied driving throughout.
44 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 118.6 mi on I 87.
How Hard Is This Drive?
10/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 121.3 miles in near I 87.
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 26 significant decision points across 313.1 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 121.3 miles (I 87): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 239.9 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 241.3 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Gently rolling terrain
977 ft12 ft
Total Climb
1,458 ft
Total Descent
1,602 ft
Highest Point
977 ft
~22.4 mi in
Elevation Range
965 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Westport, NY and Islip, NY, road signs point toward Albany, New York, Buffalo, Gsp South: Paterson, Fort Lee and Cross Island Parkway 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 6h 23m. Total distance: 313.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 23m drive, plan rest stops for pacing.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 118.6 miles on I 87. 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.
Yes — we found about 22 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Islip, 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. There are 22 rest areas along the route for bathroom stops.
The main spots that need attention: at 121.3 miles (I 87): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 239.9 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 241.3 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Hamilton Grange National Memorial, General Grant National Memorial and Saratoga National Historical Park (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.4 hours each way, a round trip means 12.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Islip, NY before the return drive.
