Origin
Islip, NY
Afternoon in Islip on Saturday
Local time
2:42 PM
EDT
Current temp
44°F
Unavailable
Live forecast
Trip from Islip, NY to Sullivan, NY
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
6h 19m
Distance
310.7 mi
500 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$51
one way
EV Charging
Unknown
Best Time to Leave
4 AM
6h 7m
★
6 AM
6h 20m
8 AM
6h 45m
10 AM
6h 28m
12 PM
6h 26m
3 PM
6h 30m
5 PM
6h 44m
8 PM
6h 12m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Islip, NY
Wikimedia Commons
Sullivan, NY
Wikimedia Commons
Trip Overview
Islip, NY to Sullivan, NY is 310.7 miles and takes about 6h 19m via NY 17, New York State Thruway, 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 across to another part of the Northeast. Expect a route that involves a good amount of turning, making it more of a local driving experience than a straight shot on an interstate. It's a manageable distance for a single day, but plan for a potentially engaging drive with varied road conditions.
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
155.3 miles from Islip, NY
A natural place for your longest stop of the day , about 3h 16m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| NY 17 | 117.5 mi | 2h 15m |
| New York State Thruway | 113.7 mi | 2h 11m |
| 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 |
| Clearview Expressway | 5 mi | 5m |
| Seneca Turnpike | 2.7 mi | 4m |
Longest stretch:
NY 17
— 117.5 mi, about 2h 15m
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip, NY and Sullivan, 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 Park
Use 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 Bridge
Use 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 26B
Toward NY 24: UBS Arena-Belmont Park
Use the slight right lane.
16
Keep slight left at fork
437 ft
·
12 sec
Toward NY 24 West: Hempstead Avenue
Use 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 West
Use 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 Bridge
Use 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: Hackensack
Use the straight / slight right lanes.
34
Keep slight right at fork
0.2 mi
·
23 sec
Exit 72A
Toward NJ 4 West: Paramus
Use 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, Mahwah
Use the straight lane.
37
Keep slight right at fork
0.2 mi
·
36 sec
Toward NJ 17 North: Mahwah
Use 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
118 mi
·
2 hr 15 min
·
NY 17
Toward I 87 North, NY 17 North, New York State Thruway North: Albany
Use the straight / slight right lanes.
44
Keep slight left at fork onto I 90
114 mi
·
2 hr 11 min
·
New York State Thruway
Toward I 90 West: Buffalo
45
Take the exit
0.8 mi
·
1 min
Exit 34
Toward NY 13: Canastota, Chittenango
Use the slight right lane.
46
Continue on this road
350 ft
·
11 sec
·
this road
47
Turn left onto NY 13
1.3 mi
·
3 min
·
North Peterboro Street
48
Turn right onto NY 5; NY 13
2.7 mi
·
4 min
·
Seneca Turnpike
Use the straight lane.
49
Continue on NY 5; NY 13
2.2 mi
·
3 min
·
State Route 5
50
Turn right onto Canaseraga Road
63 ft
·
2 sec
·
Canaseraga Road
51
Arrive at destination
Canaseraga Road
Trip Plan
Given the 6h 19m estimated duration, starting your trip in the morning from Islip is recommended to maximize daylight. With only one planned stop and a fuel cost around $51, this trip is designed for a single-day adventure, so flexibility is key. Pay close attention to signage, especially when transitioning between the parkways, thruway, and NY 17, as the 'turn-heavy' nature of this route means frequent adjustments. Ensure you have a full tank of gas before departing, as it's always wise to top off when heading into a drive with varied road types.
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 155.3 miles from Islip, NY, or about 3h 16m into the drive.
The longest continuous stretch on this route runs about 117.5 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 68 miles or 1h 35m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 155.3 miles or 3h 16m 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 10m
Traffic, exits, and arrival timing usually matter more near Sullivan, 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 310.7 miles and 6h 19m.
Your first comfortable stop window is around 68 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 117.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
155 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 68 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 155.3 miles from Islip, NY, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 315 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
$51.14 one way
$102.29 round trip
$4.18/gal
25.4 MPG avg
109 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.52 | $55.30 | $110.60 |
| premium | $4.92 | $60.22 | $120.44 |
| diesel | $5.61 | $68.60 | $137.20 |
Estimated Tolls: $28.43
George Washington Bridge
$16.00
Throgs Neck Bridge
$6.55
New York State Thruway
(113.7 mi)
$5.69
Seneca Turnpike
(2.7 mi)
$0.19
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
$28
Meals
$25–$50
Total
$105–$130
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 108.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $33 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 93.2 | 1 | $32.62 | $14.91 |
| Efficient EV | 77.7 | 0 | $27.19 | $12.43 |
| EV Truck/SUV | 124.3 | 1 | $43.50 | $19.88 |
Gas CO2
109 kg
EV CO2
36 kg (67% 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.
Destination
Sullivan, NY
Afternoon in Sullivan on Saturday
Local time
2:42 PM
EDT
Current temp
49°F
Unavailable
Live forecast
49°F
Ramapo, NY
155 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
5 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 19m 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.
Fort Stanwix National Monument
National Monument
For centuries, the Oneida Carrying Place, a six-mile portage connecting the Mohawk River and Wood Creek, served as a vital link for those traveling by water from the ocean to the Great Lakes. When Eur...
5 mi from route
~13 min detour
Free
near mile 289.3
View on nps.gov
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
~14 min detour
Free
near mile 42.9
View on nps.gov
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 53.6
View on nps.gov
Stonewall National Monument
National Monument
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 42.9
View on nps.gov
African Burial Ground National Monument
National Monument
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
~29 min detour
Free
near mile 42.9
View on nps.gov
Fire Island National Seashore
National Seashore
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
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
This is a turn-heavy local drive, with 59% of the route on highways. You'll encounter segments on the Southern State Parkway and the New York State Thruway, but the bulk of your travel will be on NY 17. The longest uninterrupted stretch you'll experience is 117.5 miles on NY 17, so while there are turns, there are also opportunities for more consistent driving. Be prepared for a route that requires attention to navigation as you transition between different road types.
This route has more turning and local-road decision points than a simple highway run.
There are about 51 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 117.5 miles.
How Hard Is This Drive?
10/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. 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 Effort
10/10
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 31 significant decision points across 310.7 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.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
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 Sullivan, 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
About the Cities
Starting in Islip, NY
Full guide →Founded 1683
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
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 19m. Total distance: 310.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 19m drive, plan rest stops for pacing.
Scenic Drive
Turn-heavy local drive route profile with national parks nearby.
Frequently Asked Questions
The drive from Islip, NY to Sullivan, NY covers 310.7 miles and takes about 6h 19m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are NY 17, New York State Thruway, Southern State Parkway. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 155.3 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 $51.14 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 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 31 significant decision points across 310.7 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 Sullivan, NY, road signs point toward Cross Island Parkway North, Hempstead Avenue West, Grandstand, Upper Level, Njtp South: Hackensack and Gsp 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.
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