Origin
Thompson, NY
Late night in Thompson on Sunday
Local time
3:43 AM
EDT
Current temp
59°F
Unavailable
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
7h 6m
Distance
328.4 mi
529 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$54
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Thompson, NY
Wikimedia Commons
Islip, NY
Wikimedia Commons
This 328.4-mile journey from Thompson, NY, to Islip, NY, is estimated to take about 7 hours and 6 minutes of driving time. With a fuel cost estimated at $54, this route is best tackled as a single-day trip, as recommended by its 1-day duration. You'll primarily navigate on I 81 and the Keystone Shortway, with the Southern State Parkway marking the final approach. The drive offers a mix of interstate travel and local roads, making it a practical option for getting between these two points within New York.
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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
164.2 miles from Thompson, NY
A natural place for your longest stop of the day , about 3h 38m into the drive .
| Road | Distance | Duration |
|---|---|---|
| I 81 | 98.8 mi | 1h 57m |
| Keystone Shortway | 80 mi | 1h 37m |
| Southern State Parkway | 24.7 mi | 31m |
| I 380 | 23.6 mi | 25m |
| East Lake Road | 9.9 mi | 14m |
| State Highway 41 | 9.8 mi | 13m |
| Clark Street Road | 9.6 mi | 11m |
| Cross Bronx Expressway | 6.6 mi | 8m |
Step-by-step road directions between Thompson, NY and Islip, NY.
Start on Townline Road
Turn right onto Avery Road
Turn left onto NY 14
Take the exit
Keep slight right at fork
Merge onto I 90
Take the exit
Keep slight right at fork
Continue on NY 414
Turn left onto NY 318
At end of road, turn left onto US 20; NY 5
Continue on US 20; NY 5
Turn right onto State Street
Turn left onto Dill Street
Continue on Loop Road
Turn left onto Genesee Street
Continue on US 20
Turn right onto NY 41
Continue on NY 41
Continue on NY 41
Continue on NY 41
Continue on NY 41
Turn right onto NY 281
Take the ramp
Keep slight right at fork
Merge onto I 81
Keep slight right at fork onto I 81
Keep slight right at fork onto US 6
Continue on I 84; I 380
Keep slight right at fork onto I 380
Keep slight left at fork
Merge onto I 80
Keep slight right at fork onto I 80
Keep slight left at fork
Keep slight right at fork
Turn right
Turn straight onto CR 56
Continue on CR 56
Continue on CR 56
Take the ramp
Merge onto US 1; US 9; US 46
Take the exit
Merge onto I 95 EXPR
Keep slight left at fork onto I 95 EXPR
Continue on I 95; US 1; US 9
Continue on I 95; US 1
Continue on I 95; US 1
Keep slight right at fork onto I 295
Merge onto I 295
Continue on I 295
Continue on I 295
Continue on NY 24
At end of road, turn left onto NY 24
Turn right onto Hempstead Avenue
Turn right onto 225th Street
Take the ramp
Merge onto CI
Take the exit
Merge onto SO
Keep slight left at fork onto SO
Take the exit
Turn straight onto CR 57
Continue on CR 57
Turn straight onto CR 57
Keep slight right at fork onto CR 57
Continue on CR 57
Continue on CR 57
At end of road, turn left onto NY 27A
Continue on Montauk Highway
Continue on NY 27A
Arrive at destination
Given the 7-hour driving time, starting your trip early in the morning from Thompson, NY, is advisable to maximize daylight and allow for your two planned stops. The estimated fuel cost of $54 should be factored into your budget. Keep an eye on your fuel gauge, especially during the 98.8-mile stretch on I 81, as services might be less frequent. The 'turn-heavy local drive' profile means you should be prepared for more frequent adjustments and navigation checks as you get closer to Islip, NY.
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 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 72 miles or 1h 48m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 164.2 miles or 3h 38m 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 43m
Traffic, exits, and arrival timing usually matter more near Islip, NY than in the middle of the route.
Open the route before leaving Thompson, 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.
Day 1
Settle into the route from Thompson, NY
This is one driving day of about 328.4 miles and 7h 6m.
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
164 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.
A short stop after about 72 miles helps settle the day before fatigue starts building.
The midpoint is around 164.2 miles from Thompson, NY, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 81 if your tank is already low. That segment runs about 98.8 miles.
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 11.1 and 323.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Take the exit toward NY 414: Waterloo, Clyde
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Keep slight right at fork onto US 6 toward I 84 East, I 380 South, US 6 East: Carbondale, Mt Pocono
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Keep slight left at fork toward I 95 North: George Washington Bridge, New York City
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Keep slight right at fork toward Leonia, Teaneck
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
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
Regular Gas
$54.06 one way
$108.11 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.52 | $58.45 | $116.91 |
| premium | $4.92 | $63.65 | $127.30 |
| diesel | $5.61 | $72.51 | $145.01 |
Estimated Tolls: $22.87
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
$54
Tolls
$23
Meals
$25–$50
Total
$102–$127
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 114.9 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $34 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 98.5 | 1 | $34.48 | $15.76 |
| Efficient EV | 82.1 | 0 | $28.73 | $13.14 |
| EV Truck/SUV | 131.4 | 1 | $45.98 | $21.02 |
Gas CO2
115 kg
EV CO2
38 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.
Current conditions at both ends of the drive.
Origin
Late night in Thompson on Sunday
Local time
3:43 AM
EDT
Current temp
59°F
Unavailable
Destination
Late night in Islip on Sunday
Local time
3:43 AM
EDT
Current temp
78°F
Mostly Sunny
49°F
Ramapo, NY
164 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
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
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.
Worth a detour if your schedule allows.
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Park data from the National Park Service API. Alerts update every 2 hours.
Expect a turn-heavy local drive with 57% of the route on highways. The longest continuous stretch you'll encounter is 98.8 miles on I 81, offering a period of more consistent speed. However, the overall profile suggests a road that will require your attention with frequent changes in direction and speed as you transition between major roads and local thoroughfares. This isn't a monotonous interstate cruise; it's a drive that keeps you engaged with its dynamic road personality.
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 11.1 miles in.
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 45 significant decision points across 328.4 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 11.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 161.4 miles (US 6): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 275.9 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Thompson, NY and Islip, NY, road signs point toward Mt Pocono, Milford, New York City, Leonia, Teaneck and George Washington Bridge Upper Level - among others.
Mt Pocono
Milford
New York City
Leonia
Teaneck
George Washington Bridge Upper Level
Cross Island Parkway South
Southern State Parkway East
Eastern Long Island
Top landmarks
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).
Weekend Trip
Doable as a same-day drive at 7h 6m. Total distance: 328.4 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 6m 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, and NPS for national parks. See our methodology for refresh cadence and limitations.
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