Origin
Port Washington, NY
Afternoon in Port Washington on Saturday
Local time
3:27 PM
EDT
Current temp
48°F
Unavailable
Live forecast
Trip from Port Washington, NY to Islip, NY
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
52m
Distance
34.3 mi
55 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Good
8 stations
Best Time to Leave
4 AM
0h 48m
★
6 AM
0h 53m
8 AM
1h 1m
10 AM
0h 56m
12 PM
0h 55m
3 PM
0h 56m
5 PM
1h 1m
8 PM
0h 50m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Port Washington, NY
Wikimedia Commons
Islip, NY
Wikimedia Commons
Trip Overview
The drive from Port Washington, NY to Islip, NY covers 34.3 miles and takes about 52m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Long Island Expressway, Islip Avenue, Port Washington Boulevard for much of the mileage, and the overall profile is mostly highway. The longest uninterrupted segment is about 22.8 miles on Long Island Expressway. At current regular gas prices, budget about $5.65 one way before food or hotel costs.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Long Island Expressway | 22.8 mi | 31m |
| Islip Avenue | 4 mi | 7m |
| Port Washington Boulevard | 2.3 mi | 4m |
| Searingtown Road | 1.3 mi | 2m |
| Joshuas Path | 1.1 mi | 1m |
| Motor Parkway | 1 mi | 1m |
| Murray Avenue | 0.4 mi | 1m |
| Willowdale Avenue | 0.4 mi | <1m |
Longest stretch:
Long Island Expressway
— 22.8 mi, about 31m
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Washington, NY and Islip, NY.
1
Start on Murray Avenue
0.4 mi
·
1 min
·
Murray Avenue
2
At end of road, turn right onto Mackey Avenue
0.2 mi
·
27 sec
·
Mackey Avenue
3
Turn left onto Willowdale Avenue
0.4 mi
·
58 sec
·
Willowdale Avenue
4
At end of road, turn right onto NY 101
2.3 mi
·
4 min
·
Port Washington Boulevard
5
Continue on Searingtown Road
1.3 mi
·
2 min
·
Searingtown Road
Use the straight lane.
6
Turn left onto South Service Road
526 ft
·
10 sec
·
South Service Road
Use the left lane.
7
Take the ramp
0.2 mi
·
30 sec
Toward I 495 East: Riverhead
8
Merge onto I 495
23 mi
·
31 min
·
Long Island Expressway
Use the straight / slight right lanes.
9
Take the exit
0.2 mi
·
31 sec
Exit 55
Toward CR 67: Motor Parkway, Central Islip
Use the straight / slight right lanes.
10
Turn straight onto Express Drive South
0.2 mi
·
26 sec
·
Express Drive South
11
Turn right onto CR 67
1.0 mi
·
1 min
·
Motor Parkway
Use the straight / right lanes.
12
Turn right onto NY 111
1.1 mi
·
1 min
·
Joshuas Path
Use the right lane.
13
Continue on NY 111
4.0 mi
·
7 min
·
Islip Avenue
14
At end of road, turn right onto NY 27A
0.2 mi
·
14 sec
·
Main Street
Use the right lane.
15
Arrive at destination
NY 27A
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
17 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 34 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 17.2 miles from Port Washington, 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 105 decision points cluster between mile 0.4 and 34.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.4 mi into trip
|
~1m in
|
Mackey Avenue
At end of road, turn right onto Mackey Avenue
Navigation decision point
5
4.5 mi into trip
|
~9m in
|
South Service Road
Turn left onto South Service Road
Lane positioning matters here
Use the left lane.
8
27.7 mi into trip
|
~41m in
Take the exit toward CR 67: Motor Parkway, Central Islip
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.
Exit 55
Toward CR 67: Motor Parkway, Central Islip
6
29.1 mi into trip
|
~43m in
|
NY 111 / Joshuas Path
Turn right onto NY 111 / Joshuas Path
Lane positioning matters here
Use the right lane.
6
34.2 mi into trip
|
~52m in
|
NY 27A / Main Street
At end of road, turn right onto NY 27A / Main Street
Lane positioning matters here
Use the right lane.
Fuel & Cost
Regular Gas
$5.65 one way
$11.29 round trip
$4.18/gal
25.4 MPG avg
12 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.52 | $6.11 | $12.21 |
| premium | $4.92 | $6.65 | $13.30 |
| diesel | $5.61 | $7.57 | $15.15 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 12 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 10.3 | 0 | $3.60 | $1.65 |
| Efficient EV | 8.6 | 0 | $3.00 | $1.37 |
| EV Truck/SUV | 13.7 | 0 | $4.80 | $2.20 |
Gas CO2
12 kg
EV CO2
4 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.
Destination
Islip, NY
Afternoon in Islip on Saturday
Local time
3:27 PM
EDT
Current temp
58°F
Partly Sunny
E 3 to 9 mph
0% chance
Live forecast
Wind Advisory
Wind Advisory issued April 18 at 2:37AM EDT until April 19 at 12:00AM EDT by NWS Burlington VT
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
10 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
52m 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.
What kind of drive is this?
34.3 mi in 52m, mostly highway — 22.8 mi of that is on Long Island Expressway.
69% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 22.8 mi on Long Island Expressway.
How Hard Is This Drive?
6/10
This is a straightforward highway drive that stays mostly on Long Island Expressway and Islip Avenue. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.4 miles in near Mackey Avenue.
Driving Effort
6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 34.3 miles you will encounter 10 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (Mackey Avenue): Navigation decision point; at 4.5 miles (South Service Road): Lane positioning matters here; at 27.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
About the Cities
Starting in Port Washington, NY
Full guide →Port Washington is a hamlet in Nassau County, on the North Shore of Long Island, in New York.
Arriving 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 52m. Total distance: 34.3 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
52m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (69%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 22.8 miles on Long Island Expressway. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Islip, NY before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 0.4 miles (Mackey Avenue): Navigation decision point; at 4.5 miles (South Service Road): Lane positioning matters here; at 27.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Fire Island National Seashore, Hamilton Grange National Memorial and General Grant National Memorial (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Islip, NY before heading back.
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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