Monticello to Islip is 131.4 miles and takes about 2h 53m via NY 17 and Southern State Parkway, with a fuel budget near $22 and enough daylight to finish in a day. This drive stays within New York, making it a convenient trip for those looking to travel within the Northeast. With a highway-focused profile and only one recommended stop, this route is designed for efficient travel. You'll find it a straightforward journey, primarily utilizing major roadways to cover the 131.4 miles.
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
65.7 miles from Monticello, NY
A natural place for your longest stop of the day
, about 1h 21m into the drive
.
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 2h 53m. Total distance: 131.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 53m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (79%). Some complex stretches to watch for.
Drive Character
This route is predominantly a highway-focused drive, with 79% of it on major roads. You'll experience stretches where the speed limit is higher and the focus is on covering ground efficiently. The longest uninterrupted stretch you'll encounter is 41.4 miles along NY 17, offering a continuous segment of highway driving. As you progress, the character will shift as you transition from NY 17 onto the Southern State Parkway and NJ 17, maintaining a consistent, high-speed feel for most of the 2h 53m journey.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 45 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 41.4 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 42.9 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 28 significant decision points across 131.4 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 42.9 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 58.2 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 59.6 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 28 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
8
42.9 mi into trip|~52m in
Keep slight left at fork toward I 87, NYST: Albany, New York City
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 87, NYST: Albany, New York City
9
58.2 mi into trip|~1h 11m 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
59.6 mi into trip|~1h 13m 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
88.6 mi into trip|~1h 53m 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
126.8 mi into trip|~2h 44m 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 Monticello, NY and Islip, NY, road signs point toward Nyst: Albany, New York City, Gsp South: Paterson, Fort Lee, New York and Cross Island Parkway South - among others.
Nyst: Albany
42.9 mi in|~52m
New York City
42.9 mi in|~52m
Gsp South: Paterson
73.7 mi in|~1h 31m
Fort Lee
73.7 mi in|~1h 31m
New York
73.7 mi in|~1h 31m
Cross Island Parkway South
100.1 mi in|~2h 9m
Southern State Parkway East
101.6 mi in|~2h 12m
Eastern Long Island
101.6 mi in|~2h 12m
Main Roads
Road
Distance
Duration
NY 17
41.4 mi
49m
Southern State Parkway
24.7 mi
31m
NJ 17
14.1 mi
18m
New York State Thruway
13.7 mi
15m
NJ 4
6.7 mi
9m
Cross Bronx Expressway
6.6 mi
8m
Clearview Expressway
5 mi
5m
Broadway
2.2 mi
3m
Longest stretch:
NY 17
— 41.4 mi, about 49m
Turn-by-Turn Driving Directions
Step-by-step road directions between Monticello, NY and Islip, NY.
1
Start on NY 42
2.2 mi·3 min·Broadway
2
Enter roundabout
224 ft·12 sec
Toward NY 17
3
Continue
85 ft·1 sec
Toward NY 17
4
Take the ramp
0.2 mi·25 sec
Toward NY 17 East: New York City
5
Merge onto NY 17
40 mi·48 min·NY 17
Use the straight / slight right lanes.
6
Keep slight left at fork
0.7 mi·59 sec
Toward I 87, NYST: Albany, New York CityUse the slight right lane.
7
Keep slight right at fork
0.9 mi·1 min
Toward I 87 Toll South: New York CityUse the slight right lane.
8
Merge onto I 87
14 mi·15 min·New York State Thruway
Use the straight / slight right lanes.
9
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.
10
Continue on I 287; NJ 17
0.5 mi·39 sec·I 287; NJ 17
11
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.
12
Take the exit
0.1 mi·19 sec
Toward NJ 4, GSP South: Paterson, Fort Lee, New York
13
Keep slight left at fork
0.5 mi·1 min
Toward NJ 4 East: Fort Lee, New York
14
Merge onto NJ 4
0.3 mi·24 sec·NJ 4
Use the right lane.
15
Continue on NJ 4
6.4 mi·8 min·NJ 4
Use the straight / slight right lanes.
16
Take the exit
0.2 mi·18 sec
Toward I 95 North: George Washington BridgeUse the straight / slight left lanes.
17
Merge onto I 95 EXPR
0.7 mi·54 sec·I 95 EXPR
Use the straight / slight right lanes.
18
Keep slight left at fork onto I 95 EXPR
0.8 mi·1 min·I 95 EXPR
19
Continue on I 95; US 1; US 9
0.6 mi·1 min·George Washington Bridge (upper level)
Use the straight / slight right lanes.
20
Continue on I 95; US 1
0.7 mi·1 min·Trans-Manhattan Expressway
21
Continue on I 95; US 1
4.7 mi·6 min·Cross Bronx Expressway
Use the straight / slight right lanes.
22
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.
23
Merge onto I 295
0.6 mi·58 sec·Throgs Neck Expressway
24
Continue on I 295
2.0 mi·3 min·Throgs Neck Bridge
Use the straight / slight right lanes.
25
Continue on I 295
5.0 mi·5 min·Clearview Expressway
Use the straight / slight right lanes.
26
Continue on NY 24
0.7 mi·1 min·Hollis Court Boulevard
Use the straight lane.
27
At end of road, turn left onto NY 24
0.2 mi·35 sec·Jamaica Avenue
Use the left lane.
28
Turn right onto Hempstead Avenue
0.9 mi·2 min·Hempstead Avenue
29
Turn right onto 225th Street
228 ft·9 sec·225th Street
Use the right lane.
30
Take the ramp
0.2 mi·28 sec
Toward Cross Island Parkway South, Verrazano Bridge
31
Merge onto CI
1.3 mi·1 min·Cross Island Parkway
Use the straight / slight right lanes.
32
Take the exit
0.5 mi·1 min
Exit 25AToward Southern State Parkway East, Eastern Long IslandUse the slight left / straight lanes.
33
Merge onto SO
25 mi·31 min·Southern State Parkway
Use the straight / slight right lanes.
34
Keep slight left at fork onto SO
0.2 mi·16 sec·Southern State Parkway
Use the straight / slight right lanes.
35
Take the exit
0.2 mi·31 sec
Exit 41SToward Bay Shore Road South, Bay ShoreUse the slight right lane.
36
Turn straight onto CR 57
0.5 mi·1 min·Bay Shore Road
37
Continue on CR 57
0.3 mi·43 sec·Howells Road
38
Turn straight onto CR 57
341 ft·6 sec·Sunrise Highway
39
Keep slight right at fork onto CR 57
0.6 mi·1 min·Howells Road
Toward Howells Road SouthUse the right lane.
40
Continue on CR 57
0.2 mi·24 sec·Roosevelt Street
41
Continue on CR 57
0.7 mi·1 min·3rd Avenue
42
At end of road, turn left onto NY 27A
1.1 mi·1 min·East Main Street
43
Continue on Montauk Highway
0.2 mi·17 sec·Montauk Highway
44
Continue on NY 27A
0.8 mi·1 min·Main Street
45
Arrive at destination
NY 27A
Trip Plan
Given the relatively short distance of 131.4 miles and a drive time under 3 hours, this trip is easily completed in a single day. Aim to depart in the morning to take advantage of daylight and avoid potential afternoon traffic. With only one recommended stop, you can be flexible with your timing. Keep an eye on your fuel levels, as the estimated cost is around $22, and plan your refueling accordingly, especially before embarking on the longest stretch of 41.4 miles on NY 17.
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 65.7 miles from Monticello, NY, or about 1h 21m into the drive.
The longest continuous stretch on this route runs about 41.4 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 29 miles or 36m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 65.7 miles or 1h 21m 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 20m
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 Monticello, 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 Monticello, NY
This is one driving day of about 131.4 miles and 2h 53m.
Your first comfortable stop window is around 29 miles from Monticello, 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 41.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 65.7 mi from Monticello, NY
· 1h 21m into the drive
The midpoint is around 68 miles from Monticello, NY, which is a good place for a longer meal and fuel stop.
Arriving in Islip, NY
The final approach into Islip, 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 Islip, NY.
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.
General Grant National Memorial
National Memorial
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...
3 mi from route
~8 min detour
Free
near mile 81.6
Caution: Lower Crypt Access Subject to Safe Conditions
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...
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
~22 min detour
Free
near mile 81.6
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 81.6
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 81.6
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 81.6
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$21.63 one way
$43.26 round trip
$4.18/gal25.4 MPG avg46 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.52
$23.39
$46.78
premium
$4.92
$25.47
$50.94
diesel
$5.61
$29.01
$58.02
Estimated Tolls: $23.23
George Washington Bridge
$16.00
Throgs Neck Bridge
$6.55
New York State Thruway
(13.7 mi)$0.68
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
$22
Tolls
$23
Meals
$25–$50
Total
$70–$95
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 46 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $14 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
39.4
0
$13.80
$6.31
Efficient EV
32.9
0
$11.50
$5.26
EV Truck/SUV
52.6
0
$18.40
$8.41
Gas CO2
46 kg
EV CO2
15 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 18, 2026
Origin
Monticello, NY
Late night
in Monticello on Saturday
Local time
5:35 AM
EDT
Current temp
54°F
Unavailable
Live forecast
Destination
Islip, NY
Late night
in Islip on Saturday
Local time
5:35 AM
EDT
Current temp
50°F
Partly Cloudy
NE 3 mph0% chanceLive forecast
Wind Advisory
Wind Advisory issued April 18 at 2:37AM EDT until April 19 at 12:00AM EDT by NWS Burlington VT
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
4 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
2h 53m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Monticello, NY to Islip, NY covers 131.4 miles and takes about 2h 53m 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 65.7 miles from Monticello, NY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $21.63 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 28 significant decision points across 131.4 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 42.9 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 58.2 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 59.6 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here.
Between Monticello, NY and Islip, NY, road signs point toward Nyst: Albany, New York City, Gsp South: Paterson, Fort Lee, New York and Cross Island Parkway South - among others.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
