This 399.2-mile journey from Islip, NY to Portville, NY will take you approximately 8 hours and 7 minutes of driving time. With a fuel cost estimated at $66, this route is best tackled over two days to allow for comfortable pacing and rest. You'll spend most of your time on major roadways, including I-86, the Christopher Columbus Highway, and the Southern Tier Expressway. Since both your origin and destination are within the Northeast region, you'll remain in familiar territory throughout this drive. Considering the duration and distance, splitting this trip into two days is highly recommended for a more enjoyable experience.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
199.6 miles from Islip, NY
A natural place for your longest stop of the day
, about 4h 10m into the drive
.
Drive Character
This is a highway-focused drive, with 74% of the route utilizing major expressways. You can expect long stretches of consistent travel, including a notable 100-mile segment on I-86. The majority of the drive will feel like a steady cruise on well-maintained highways, making it efficient for covering distance. While the primary roads are expressways, be prepared for the transition as you approach your destination, where the character might shift slightly from the main highways.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 60 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 86 is the longest continuous segment at about 100 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 86 and Christopher Columbus Highway. 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 39 significant decision points across 399.2 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 39 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
8
50.3 mi into trip|~1h 11m in
Keep slight left at fork toward I 95 South, NJTP South: Hackensack
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Toward I 95 South, NJTP South: Hackensack
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 Portville, NY, road signs point toward Cross Island Parkway North, Hempstead Avenue West, Grandstand, Upper Level, Njtp South: Hackensack and Hackensack.
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
Hackensack
52.6 mi in|~1h 14m
Main Roads
Road
Distance
Duration
I 86
100 mi
1h 56m
Christopher Columbus Highway
68.2 mi
1h 20m
Southern Tier Expressway
60.6 mi
1h 10m
I 81
58.1 mi
1h 9m
I 380
27.7 mi
30m
Southern State Parkway
24.7 mi
31m
Keystone Shortway
17.3 mi
24m
Cross Bronx Expressway
6.6 mi
8m
Longest stretch:
I 86
— 100 mi, about 1h 56m
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip, NY and Portville, 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 left at fork
0.4 mi·29 sec
Toward I 95 South, NJTP South: HackensackUse the slight left / slight right lanes.
35
Merge onto I 95; NJTP
2.0 mi·2 min·New Jersey Turnpike
Use the straight / slight right lanes.
36
Take the exit
0.8 mi·1 min
Exit 69Toward I 80 West: Paterson, HackensackUse the straight / slight right lanes.
37
Continue on I 80
68 mi·1 hr 20 min·Christopher Columbus Highway
Use the straight / slight right lanes.
38
Keep slight left at fork onto I 80
5.5 mi·8 min·Keystone Shortway
Use the straight / slight right lanes.
39
Keep slight left at fork onto I 80
12 mi·15 min·Keystone Shortway
40
Take the exit
0.7 mi·46 sec
Exit 293Toward I 380 North: Scranton
41
Continue on I 380
28 mi·30 min·I 380
Use the straight lane.
42
Merge onto I 81
58 mi·1 hr 9 min·I 81
Use the straight lane.
43
Keep slight left at fork onto I 86; NY 17
100 mi·1 hr 56 min·I 86; NY 17
Toward I 86: Corning
44
Keep slight right at fork onto I 86; NY 17
61 mi·1 hr 10 min·Southern Tier Expressway
Toward I 86 West, NY 17 West: Erie
45
Turn left onto State Highway 16
5.7 mi·8 min·State Highway 16
46
Continue on NY 16
1.1 mi·1 min·North Union Street
47
Enter roundabout onto NY 16
94 ft·1 sec·North Union Street
48
Continue on NY 16
0.1 mi·10 sec·North Union Street
49
Enter roundabout onto NY 16
98 ft·1 sec·North Union Street
50
Continue on NY 16
0.1 mi·12 sec·North Union Street
51
Enter roundabout onto NY 16
98 ft·1 sec·North Union Street
52
Continue on NY 16
479 ft·8 sec·North Union Street
53
Enter roundabout onto NY 16
101 ft·2 sec·North Union Street
54
Continue on NY 16
0.3 mi·23 sec·North Union Street
55
Enter roundabout onto NY 417
184 ft·4 sec·East State Street
56
Continue on NY 417
1.6 mi·2 min·East State Street
57
Continue on NY 417
3.6 mi·5 min·Olean-Portville Road
58
Continue on NY 417
0.4 mi·38 sec·North Main Street
59
Turn right onto Barrett Street
54 ft·2 sec·Barrett Street
60
Arrive at destination
Barrett Street
Trip Plan
To make the most of this trip, consider departing early in the morning to maximize daylight hours. Given the 8-hour driving duration, splitting the journey over two days is advisable; aim to cover roughly half the distance on day one. Plan for at least two stops along the way for fuel and rest, especially with the longest stretch being 100 miles on I-86. A practical tip for this route is to ensure your vehicle is well-maintained before you depart, as much of the drive is on high-speed expressways where breakdowns can be more inconvenient.
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.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 199.6 miles from Islip, NY, or about 4h 10m into the drive.
The longest continuous stretch on this route runs about 100 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 88 miles or 1h 56m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 199.6 miles or 4h 10m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 199.6 miles or 4h 10m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 6h 53m
Traffic, exits, and arrival timing usually matter more near Portville, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Islip, NY
Aim for roughly 200 miles and 4.1 hours of wheel time on this day.
Day 2
Finish the approach into Portville, NY
Aim for roughly 200 miles and 4.1 hours of wheel time on this day.
Your first comfortable stop window is around 88 miles from Islip, NY.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 86 for about 100 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 199.6 mi from Islip, NY
· 4h 10m into the drive
The midpoint is around 199.6 miles from Islip, NY, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before I 86 if your tank is already low. That segment runs about 100 miles.
Overnight split
Hotel stop
For a steadier pace, wrap day one after about 200 miles or 4.1 hours on the road.
Arriving in Portville, NY
The final approach into Portville, 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 Portville, NY.
On a multi-day trip, keep the last day a little lighter so you reach Portville, NY with some flexibility left in the schedule.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
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...
6 mi from route
~15 min detour
Free
near mile 55.1
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...
6 mi from route
~16 min detour
Free
near mile 55.1
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
~24 min detour
Free
near mile 55.1
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
~27 min detour
Free
near mile 55.1
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
~29 min detour
Free
near mile 55.1
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...
11 mi from route
~28 min detour
Free
near mile 55.1
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$65.71 one way
$131.42 round trip
$4.18/gal25.4 MPG avg140 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.52
$71.05
$142.11
premium
$4.92
$77.37
$154.75
diesel
$5.61
$88.14
$176.28
Estimated Tolls: $22.83
George Washington Bridge
$16.00
Throgs Neck Bridge
$6.55
New Jersey Turnpike
(2 mi)$0.28
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
$66
Tolls
$23
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$219–$329
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 139.7 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $42 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
119.8
1
$41.92
$19.16
Efficient EV
99.8
1
$34.93
$15.97
EV Truck/SUV
159.7
1
$55.89
$25.55
Gas CO2
140 kg
EV CO2
47 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 Apr 16, 2026
Origin
Islip, NY
Night
in Islip on Thursday
Local time
11:23 PM
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
Portville, NY
Night
in Portville on Thursday
Local time
11:23 PM
EDT
Current temp
59°F
Unavailable
Live forecast
57°F
Ramapo, NY
200 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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
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
19 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
8h 7m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
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 Portville, NY covers 399.2 miles and takes about 8h 7m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 86, Christopher Columbus Highway, Southern Tier Expressway. Most of the drive stays on highways, so watch for ramps and exits.
Consider an overnight stop or starting very early.
Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 200 miles on day one.
The midpoint is about 199.6 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 $65.71 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks 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 39 significant decision points across 399.2 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 Portville, NY, road signs point toward Cross Island Parkway North, Hempstead Avenue West, Grandstand, Upper Level, Njtp South: Hackensack and Hackensack.
Yes. Nearby national parks include General Grant National Memorial, Hamilton Grange National Memorial and Stonewall National Monument. There are 6 parks within detour distance of this route.
