Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Sep 2, 2026 · Editorial standards
Drive Time
8h 8m
Distance
392.9 mi
632 km
Drive Score
9/10
Great drive
Same Day?
2-day trip
Fuel Cost
$66
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Islip, NY
Wikimedia Commons
Constable, NY
Renan Tagliaferro
The drive from Islip, NY to Constable, NY covers 392.9 miles and takes about 8h 8m behind the wheel. It usually feels better as a 2-day road trip than as one long push.
The route leans on Adirondack Northway, NY 17, Southern State Parkway for much of the mileage, and the overall profile is mostly surface roads. The longest uninterrupted segment is about 145.9 miles on Adirondack Northway. At current regular gas prices, budget about $65.90 one way before food or hotel costs.
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
196.4 miles from Islip, NY
A natural place for your longest stop of the day , about 4h 6m into the drive .
| Road | Distance | Duration |
|---|---|---|
| Adirondack Northway | 145.9 mi | 2h 49m |
| NY 17 | 111.7 mi | 2h 8m |
| Southern State Parkway | 24.7 mi | 31m |
| Military Turnpike | 23.5 mi | 32m |
| State Route 11 | 17.8 mi | 24m |
| NJ 17 | 14.7 mi | 18m |
| I 787 | 9 mi | 12m |
| NJ 4 | 6.7 mi | 9m |
Hour-of-day weekday pattern from 46 FHWA count stations on your route.
Peak
4 PM
~2,467 veh/hr typical · worst 3,399
Quietest
1 AM
~114 veh/hr
Peak-to-quiet ratio
21.6×
busier at peak than in the quiet hours
Averaged across 79 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Step-by-step road directions between Islip, NY and Constable, NY.
Start on NY 27A
Continue on Montauk Highway
Continue on NY 27A
Turn right onto 3rd Avenue
Continue on CR 57
Continue on CR 57
Turn straight onto Sunrise Highway
Keep slight right at fork onto CR 57
Continue on CR 57
Take the ramp
Continue on this road
Merge onto SO
Take the exit
Merge onto CI
Take the exit
Keep slight left at fork
Keep slight right at fork
Keep slight right at fork
Continue on this road
Keep slight left at fork
Turn right onto NY 24
Turn left onto Jamaica Avenue
Turn right onto NY 24
Continue on I 295
Continue on I 295
Continue on I 295
Keep slight left at fork onto I 295
Keep slight left at fork onto I 95; US 1
Continue on I 95; US 1
Continue on I 95 EXPR; US 1 EXPR; US 9 EXPR
Keep slight left at fork onto I 95 EXPR; US 1 EXPR; US 9 EXPR
Keep slight left at fork onto I 95 EXPR; NJTP
Take the exit
Keep slight right at fork
Merge onto NJ 4
Take the exit
Keep slight right at fork
Merge onto NJ 17
Continue on NJ 17
Continue on NJ 17
Continue on NJ 17
Continue on I 287; NY 17
Keep slight left at fork onto NY 17
Take the exit
Continue on I 787
Keep slight left at fork onto NY 787
Take the exit
Merge onto NY 7
Take the exit
Merge onto I 87
Take the exit
Turn left onto NY 3
Turn right onto NY 190
Turn left onto US 11
Continue on US 11
Continue on US 11
Turn slight right onto NY 122; CR 22
Arrive at destination
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.
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 86 miles or 1h 56m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 196.4 miles or 4h 6m 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 196.4 miles or 4h 6m
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 45m
Traffic, exits, and arrival timing usually matter more near Constable, NY than in the middle of the route.
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 196 miles and 4.1 hours of wheel time on this day.
Day 2
Finish the approach into Constable, NY
Aim for roughly 196 miles and 4.1 hours of wheel time on this day.
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Overnight candidate
196 mi into the route
Best for: Hotel check-in, dinner, and a fresh start
This lines up well with a realistic day-end stop if you are breaking the drive into stages.
Find hotels in Tarrytown, NYNight 1
196 mi · about 4.1h in
A practical overnight split lands near Tarrytown, NY after about 196 miles or 4.1 hours of driving.
Find hotelsA short stop after about 86 miles helps settle the day before fatigue starts building.
The midpoint is around 196.4 miles from Islip, NY, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Adirondack Northway if your tank is already low. That segment runs about 145.9 miles.
Overnight split
Hotel stopFor a steadier pace, wrap day one after about 196 miles or 4.1 hours on the road.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
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.
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
Keep slight left at fork toward NY 24 West: Hempstead Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Keep slight right at fork toward Hempstead Avenue West
Highway fork - watch signs carefully. Lane positioning matters here
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
Keep slight right at fork toward NJ 4 West: Paramus
Highway fork - watch signs carefully. Lane positioning matters here
Regular Gas
$65.90 one way
$131.79 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.63 | $71.56 | $143.11 |
| premium | $5.05 | $78.16 | $156.32 |
| diesel | $5.60 | $86.61 | $173.22 |
Estimated Tolls: $24.19
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
$66
Tolls
$24
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$220–$330
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 137.5 kg one way. Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $41 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 117.9 | 1 | $41.25 | $18.86 |
| Efficient EV | 98.2 | 1 | $34.38 | $15.72 |
| EV Truck/SUV | 157.2 | 1 | $55.01 | $25.15 |
Gas CO2
137 kg
EV CO2
46 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.
Current conditions at both ends of the drive.
Origin
Late night in Islip on Wednesday
Local time
12:20 AM
EDT
Current temp
66°F
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
Destination
Late night in Constable on Wednesday
Local time
12:20 AM
EDT
Current temp
60°F
Mostly Cloudy then Slight Chance Rain Showers
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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
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.
Worth a detour if your schedule allows.
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National Monument
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Park data from the National Park Service API. Alerts update every 2 hours.
392.9 mi in 8h 8m across surface roads — expect steady turns and local traffic rather than long highway runs.
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.
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 36 significant decision points across 392.9 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.
Gently rolling terrain
Total Climb
2,093 ft
Total Descent
1,747 ft
Highest Point
950 ft
~364.8 mi in
Elevation Range
937 ft
Notable High Points
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Islip, NY and Constable, 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
Hempstead Avenue West
Grandstand
Upper Level
Njtp South: Hackensack
Gsp South
Gsp North
Newark
Mahwah
New York State Thruway North: Albany
Troy
Saratoga Springs
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
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Solo Traveler
8h 8m drive, plan rest stops for pacing.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, NPS for national parks, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.
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