Clark Mills, NY to Islip, NY is 286.3 miles and takes about 5h 53m via New York State Thruway, with a fuel budget near $47 and enough daylight to finish in a day. This trip stays within New York, connecting the Northeast region of the state to its southern portion. With over half the drive on surface roads, expect a mix of cruising and navigating local traffic. If you're looking for a straightforward, single-day drive with a moderate fuel cost, this route should fit the bill.
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
143.1 miles from Clark Mills, NY
A natural place for your longest stop of the day
, about 2h 50m into the drive
.
Main Roads
Road
Distance
Duration
New York State Thruway
201.9 mi
3h 53m
Southern State Parkway
24.7 mi
31m
NJ 17
14.1 mi
18m
NJ 4
6.7 mi
9m
Cross Bronx Expressway
6.6 mi
8m
Clearview Expressway
5 mi
5m
Judd Road Expressway
3.6 mi
4m
North-South Arterial Highway
2.9 mi
3m
Longest stretch:
New York State Thruway
— 201.9 mi, about 3h 53m
Traffic on I-95
Hour-of-day weekday pattern from 26 FHWA count stations on your route.
Peak
7 AM
~4,060 veh/hr typical
Quietest
2 AM
~1,244 veh/hr
Peak-to-quiet ratio
3.3×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 72 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Clark Mills, NY and Islip, NY.
1
Start on this road
24 ft·3 sec·this road
2
Turn right onto White Street
103 ft·8 sec·White Street
3
Turn right onto CR 19
0.2 mi·42 sec·Main Street
4
Turn left onto CR 32
438 ft·12 sec·Westmoreland Road
5
Turn right onto CR 19
1.5 mi·2 min·Clark Mills Road
6
Turn right onto NY 840
3.6 mi·4 min·Judd Road Expressway
7
Take the exit
0.2 mi·30 sec
8
Continue on NY 5; NY 12
2.9 mi·3 min·North-South Arterial Highway
9
Take the exit
0.1 mi·17 sec
10
Keep slight right at fork
219 ft·6 sec
11
Turn slight right onto Court Street
0.3 mi·55 sec·Court Street
12
Turn left onto Genesee Street
1.5 mi·2 min·Genesee Street
13
Take the ramp
0.4 mi·49 sec
Toward I 90
14
Keep slight right at fork
0.3 mi·43 sec
Toward I 90 East
15
Merge onto I 90
84 mi·1 hr 36 min·New York State Thruway
16
Keep slight right at fork onto New York State Thruway
118 mi·2 hr 16 min·New York State Thruway
Toward I 87 South: New York, BostonUse the slight right lane.
17
Keep slight right at fork onto NY 17
0.9 mi·59 sec·NY 17
Exit 15Toward I 287 South, NJ 17 South: New JerseyUse the slight right lane.
18
Continue on I 287; NJ 17
0.5 mi·39 sec·I 287; NJ 17
19
Keep slight left at fork onto NJ 17
14 mi·18 min·NJ 17
Exit 66Toward NJ 17 South: MahwahUse the slight left / straight lanes.
20
Take the exit
0.1 mi·19 sec
Toward NJ 4, GSP South: Paterson, Fort Lee, New York
21
Keep slight left at fork
0.5 mi·1 min
Toward NJ 4 East: Fort Lee, New York
22
Merge onto NJ 4
0.3 mi·24 sec·NJ 4
Use the right lane.
23
Continue on NJ 4
6.4 mi·8 min·NJ 4
Use the straight / slight right lanes.
24
Take the exit
0.2 mi·18 sec
Toward I 95 North: George Washington BridgeUse the straight / slight left lanes.
25
Merge onto I 95 EXPR
0.7 mi·54 sec·I 95 EXPR
Use the straight / slight right lanes.
26
Keep slight left at fork onto I 95 EXPR
0.8 mi·1 min·I 95 EXPR
27
Continue on I 95; US 1; US 9
0.6 mi·1 min·George Washington Bridge (upper level)
Use the straight / slight right lanes.
28
Continue on I 95; US 1
0.7 mi·1 min·Trans-Manhattan Expressway
29
Continue on I 95; US 1
4.7 mi·6 min·Cross Bronx Expressway
Use the straight / slight right lanes.
30
Keep slight right at fork onto I 295
2.0 mi·2 min·Cross Bronx Expressway
Exit 6BToward I 295 South: Throgs Neck BridgeUse the straight / slight left lanes.
31
Merge onto I 295
0.6 mi·58 sec·Throgs Neck Expressway
32
Continue on I 295
2.0 mi·3 min·Throgs Neck Bridge
Use the straight / slight right lanes.
33
Continue on I 295
5.0 mi·5 min·Clearview Expressway
Use the straight / slight right lanes.
34
Continue on NY 24
0.7 mi·1 min·Hollis Court Boulevard
Use the straight lane.
35
At end of road, turn left onto NY 24
0.2 mi·35 sec·Jamaica Avenue
Use the left lane.
36
Turn right onto Hempstead Avenue
0.9 mi·2 min·Hempstead Avenue
37
Turn right onto 225th Street
228 ft·9 sec·225th Street
Use the right lane.
38
Take the ramp
0.2 mi·28 sec
Toward Cross Island Parkway South, Verrazano Bridge
39
Merge onto CI
1.3 mi·1 min·Cross Island Parkway
Use the straight / slight right lanes.
40
Take the exit
0.5 mi·1 min
Exit 25AToward Southern State Parkway East, Eastern Long IslandUse the slight left / straight lanes.
41
Merge onto SO
25 mi·31 min·Southern State Parkway
Use the straight / slight right lanes.
42
Keep slight left at fork onto SO
0.2 mi·16 sec·Southern State Parkway
Use the straight / slight right lanes.
43
Take the exit
0.2 mi·31 sec
Exit 41SToward Bay Shore Road South, Bay ShoreUse the slight right lane.
44
Turn straight onto CR 57
0.5 mi·1 min·Bay Shore Road
45
Continue on CR 57
0.3 mi·43 sec·Howells Road
46
Turn straight onto CR 57
341 ft·6 sec·Sunrise Highway
47
Keep slight right at fork onto CR 57
0.6 mi·1 min·Howells Road
Toward Howells Road SouthUse the right lane.
48
Continue on CR 57
0.2 mi·24 sec·Roosevelt Street
49
Continue on CR 57
0.7 mi·1 min·3rd Avenue
50
At end of road, turn left onto NY 27A
1.1 mi·1 min·East Main Street
51
Continue on Montauk Highway
0.2 mi·17 sec·Montauk Highway
52
Continue on NY 27A
0.8 mi·1 min·Main Street
53
Arrive at destination
NY 27A
Trip Plan
Given the 5h 53m estimated duration, leaving Clark Mills in the morning should allow you to reach Islip within the same day, even with a planned stop. Factor in the $47 fuel cost, and consider topping off your tank before you begin to avoid surprises. The longest stretch on the New York State Thruway is substantial, so plan your break before or after this segment. Keep an eye on traffic, especially as you get closer to Long Island, as surface road travel can be more unpredictable.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 143.1 miles from Clark Mills, NY, or about 2h 50m into the drive.
The longest continuous stretch on this route runs about 201.9 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 63 miles or 1h 18m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 143.1 miles or 2h 50m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 41m
Traffic, exits, and arrival timing usually matter more near Islip, NY than in the middle of the route.
Before You Leave
+
Open the route before leaving Clark Mills, 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 Clark Mills, NY
This is one driving day of about 286.3 miles and 5h 53m.
Your first comfortable stop window is around 63 miles from Clark Mills, 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 New York State Thruway for about 201.9 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 34
5 decision points cluster between mile 94.9 and 281.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
94.9 mi into trip|~1h 55m in|New York State Thruway
Keep slight right at fork onto New York State Thruway toward I 87 South: New York, Boston
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 87 South: New York, Boston
9
213.1 mi into trip|~4h 11m in|NY 17
Keep slight right at fork onto NY 17 toward I 287 South, NJ 17 South: New Jersey
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 15
Toward I 287 South, NJ 17 South: New Jersey
8
214.4 mi into trip|~4h 13m in|NJ 17
Keep slight left at fork onto NJ 17 toward NJ 17 South: Mahwah
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / straight lanes.
Exit 66
Toward NJ 17 South: Mahwah
8
243.5 mi into trip|~4h 53m in|I 295 / Cross Bronx Expressway
Keep slight right at fork onto I 295 / Cross Bronx Expressway toward I 295 South: Throgs Neck Bridge
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight left lanes.
Exit 6B
Toward I 295 South: Throgs Neck Bridge
9
281.7 mi into trip|~5h 44m in
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
Use the slight right lane.
Exit 41S
Toward Bay Shore Road South, Bay Shore
Fuel & Cost
Regular Gas
$50.11 one way
$100.23 round trip
$4.45/gal25.4 MPG avg100 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.82
$54.31
$108.61
premium
$5.23
$58.95
$117.90
diesel
$6.28
$70.74
$141.48
Estimated Tolls: $32.64
George Washington Bridge
$16.00
New York State Thruway
(201.9 mi)$10.09
Throgs Neck Bridge
$6.55
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
$50
Tolls
$33
Meals
$25–$50
Total
$108–$133
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 100.2 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $30 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
85.9
1
$30.06
$13.74
Efficient EV
71.6
0
$25.05
$11.45
EV Truck/SUV
114.5
1
$40.08
$18.32
Gas CO2
100 kg
EV CO2
33 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.
Forecast as of Oct 19, 2026
Origin
Clark Mills, NY
Night
in Clark Mills on Saturday
Local time
11:05 PM
EDT
Current temp
65°F
Sunny
SE 3 mph0% chanceLive forecast
Destination
Islip, NY
Night
in Islip on Saturday
Local time
11:05 PM
EDT
Current temp
43°F
Clear
NE 6 mph0% chanceLive forecast
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
22 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
5h 53m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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.
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...
3 mi from route
~7 min detour
Free
near mile 236.9
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...
3 mi from route
~6 min detour
Free
near mile 236.9
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...
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...
9 mi from route
~21 min detour
Free
near mile 236.9
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...
10 mi from route
~25 min detour
Free
near mile 236.9
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...
10 mi from route
~26 min detour
Free
near mile 236.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
You'll spend 23% of this 286.3-mile drive on highways. The longest continuous stretch on a high-speed road is 201.9 miles on the New York State Thruway. After this, you'll transition to surface roads, likely noticing an increase in exits and local traffic as you approach your destination. The profile is mostly surface roads, so be prepared for more varied speed limits.
Only 23% highway — the rest is turn-by-turn surface driving.
53 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 201.9 mi on New York State Thruway.
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 94.9 miles in near New York State Thruway.
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 34 significant decision points across 286.3 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 94.9 miles (New York State Thruway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 213.1 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 214.4 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
522 ft12 ft
Total Climb
592 ft
Total Descent
1,097 ft
Highest Point
522 ft
~20.4 mi in
Elevation Range
510 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Clark Mills, NY and Islip, NY, road signs point toward Boston, Gsp South: Paterson, Fort Lee, New York, Cross Island Parkway South and Southern State Parkway East - among others.
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
Doable as a same-day drive at 5h 53m. Total distance: 286.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 53m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 201.9 miles on New York State Thruway. The full list of main roads is in the Roads section above.
Expect about $32.64 in tolls one way, starting with George Washington Bridge. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
Yes — we found about 26 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 26 rest areas along the route for bathroom stops.
The main spots that need attention: at 94.9 miles (New York State Thruway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 213.1 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 214.4 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — General Grant National Memorial, Hamilton Grange National Memorial and Fort Stanwix National Monument (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.9 hours each way, a round trip means 11.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Islip, NY before the return drive.
