Origin
Montgomery, NY
Late night in Montgomery on Friday
Local time
4:11 AM
EDT
Current temp
41°F
Unavailable
Live forecast
Trip from Montgomery, NY to Islip, NY
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
2h 30m
Distance
112.1 mi
180 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$18
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 20m
★
6 AM
2h 30m
8 AM
2h 50m
10 AM
2h 37m
12 PM
2h 35m
3 PM
2h 38m
5 PM
2h 49m
8 PM
2h 24m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Montgomery, NY
Wikimedia Commons
Islip, NY
Wikimedia Commons
Trip Overview
This 112.1-mile drive from Montgomery, NY, to Islip, NY, is a manageable 2.5-hour trip, making it perfect for a single day. With a fuel cost estimated at $18, it's an economical journey. You'll spend a significant portion of your time on highways, with 63% of the route being high-speed roads. This route stays within the Northeast region, traversing New York State. It's a straightforward drive that doesn't require an overnight stay, allowing for flexibility in your schedule.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
56 miles from Montgomery, NY
A natural place for your longest stop of the day , about 1h 11m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 30m. Total distance: 112.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 30m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (63%). Some complex stretches to watch for.
Drive Character
Expect a highway-focused experience for most of this 112.1-mile journey, with 63% of the drive utilizing high-speed roads. The New York State Thruway will be your primary artery for a substantial stretch, offering a longest uninterrupted segment of 29 miles. While the Southern State Parkway and NJ 17 will also feature, the character remains largely that of efficient, albeit potentially busy, highway travel. This isn't a route for leisurely sightseeing on rural byways, but rather for making steady progress.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 45 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
New York State Thruway is the longest continuous segment at about 29 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on New York State Thruway and Southern State Parkway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 38.9 miles in near NY 17.
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 26 significant decision points across 112.1 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 38.9 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 40.2 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here; at 69.3 miles (I 295 / Cross Bronx Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 26 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
9
38.9 mi into trip
|
~47m 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
40.2 mi into trip
|
~49m 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
69.3 mi into trip
|
~1h 29m 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
8
82.3 mi into trip
|
~1h 48m in
Take the exit toward Southern State Parkway East, Eastern Long Island
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / straight lanes.
Exit 25A
Toward Southern State Parkway East, Eastern Lon...
9
107.5 mi into trip
|
~2h 21m 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
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Montgomery, NY and Islip, NY, road signs point toward Albany, New York City, Gsp South: Paterson, Fort Lee, New York and Cross Island Parkway South - among others.
Albany
8.6 mi in
|
~12m
New York City
8.6 mi in
|
~12m
Gsp South: Paterson
54.3 mi in
|
~1h 8m
Fort Lee
54.3 mi in
|
~1h 8m
New York
54.3 mi in
|
~1h 8m
Cross Island Parkway South
80.7 mi in
|
~1h 46m
Southern State Parkway East
82.3 mi in
|
~1h 48m
Eastern Long Island
82.3 mi in
|
~1h 48m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| New York State Thruway | 29 mi | 33m |
| 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 |
| State Highway 17K | 6.2 mi | 8m |
| Clearview Expressway | 5 mi | 5m |
| Throgs Neck Bridge | 2 mi | 3m |
Longest stretch:
New York State Thruway
— 29 mi, about 33m
Turn-by-Turn Driving Directions
Step-by-step road directions between Montgomery, NY and Islip, NY.
1
Start on NY 17K
0.6 mi
·
53 sec
·
Ward Street
2
Continue on NY 17K
6.2 mi
·
8 min
·
State Highway 17K
3
Turn left
0.3 mi
·
38 sec
Toward I 84 East: Newburgh Beacon Bridge
4
Merge onto I 84
1.5 mi
·
1 min
·
I 84
5
Take the exit
0.5 mi
·
1 min
Exit 36A
Toward I 87: New York State Thruway Toll, Albany, New York City
6
Continue on this road
427 ft
·
10 sec
·
this road
7
Keep slight left at fork
0.6 mi
·
40 sec
Toward I 87 South: New York City
8
Merge onto I 87
29 mi
·
33 min
·
New York State Thruway
Use the straight / slight right lanes.
9
Keep slight right at fork onto NY 17
0.9 mi
·
59 sec
·
NY 17
Exit 15
Toward I 287 South, NJ 17 South: New Jersey
Use the slight right lane.
10
Continue on I 287; NJ 17
0.5 mi
·
39 sec
·
I 287; NJ 17
11
Keep slight left at fork onto NJ 17
14 mi
·
18 min
·
NJ 17
Exit 66
Toward NJ 17 South: Mahwah
Use the slight left / straight lanes.
12
Take the exit
0.1 mi
·
19 sec
Toward NJ 4, GSP South: Paterson, Fort Lee, New York
13
Keep slight left at fork
0.5 mi
·
1 min
Toward NJ 4 East: Fort Lee, New York
14
Merge onto NJ 4
0.3 mi
·
24 sec
·
NJ 4
Use the right lane.
15
Continue on NJ 4
6.4 mi
·
8 min
·
NJ 4
Use the straight / slight right lanes.
16
Take the exit
0.2 mi
·
18 sec
Toward I 95 North: George Washington Bridge
Use the straight / slight left lanes.
17
Merge onto I 95 EXPR
0.7 mi
·
54 sec
·
I 95 EXPR
Use the straight / slight right lanes.
18
Keep slight left at fork onto I 95 EXPR
0.8 mi
·
1 min
·
I 95 EXPR
19
Continue on I 95; US 1; US 9
0.6 mi
·
1 min
·
George Washington Bridge (upper level)
Use the straight / slight right lanes.
20
Continue on I 95; US 1
0.7 mi
·
1 min
·
Trans-Manhattan Expressway
21
Continue on I 95; US 1
4.7 mi
·
6 min
·
Cross Bronx Expressway
Use the straight / slight right lanes.
22
Keep slight right at fork onto I 295
2.0 mi
·
2 min
·
Cross Bronx Expressway
Exit 6B
Toward I 295 South: Throgs Neck Bridge
Use the straight / slight left lanes.
23
Merge onto I 295
0.6 mi
·
58 sec
·
Throgs Neck Expressway
24
Continue on I 295
2.0 mi
·
3 min
·
Throgs Neck Bridge
Use the straight / slight right lanes.
25
Continue on I 295
5.0 mi
·
5 min
·
Clearview Expressway
Use the straight / slight right lanes.
26
Continue on NY 24
0.7 mi
·
1 min
·
Hollis Court Boulevard
Use the straight lane.
27
At end of road, turn left onto NY 24
0.2 mi
·
35 sec
·
Jamaica Avenue
Use the left lane.
28
Turn right onto Hempstead Avenue
0.9 mi
·
2 min
·
Hempstead Avenue
29
Turn right onto 225th Street
228 ft
·
9 sec
·
225th Street
Use the right lane.
30
Take the ramp
0.2 mi
·
28 sec
Toward Cross Island Parkway South, Verrazano Bridge
31
Merge onto CI
1.3 mi
·
1 min
·
Cross Island Parkway
Use the straight / slight right lanes.
32
Take the exit
0.5 mi
·
1 min
Exit 25A
Toward Southern State Parkway East, Eastern Long Island
Use the slight left / straight lanes.
33
Merge onto SO
25 mi
·
31 min
·
Southern State Parkway
Use the straight / slight right lanes.
34
Keep slight left at fork onto SO
0.2 mi
·
16 sec
·
Southern State Parkway
Use the straight / slight right lanes.
35
Take the exit
0.2 mi
·
31 sec
Exit 41S
Toward Bay Shore Road South, Bay Shore
Use the slight right lane.
36
Turn straight onto CR 57
0.5 mi
·
1 min
·
Bay Shore Road
37
Continue on CR 57
0.3 mi
·
43 sec
·
Howells Road
38
Turn straight onto CR 57
341 ft
·
6 sec
·
Sunrise Highway
39
Keep slight right at fork onto CR 57
0.6 mi
·
1 min
·
Howells Road
Toward Howells Road South
Use the right lane.
40
Continue on CR 57
0.2 mi
·
24 sec
·
Roosevelt Street
41
Continue on CR 57
0.7 mi
·
1 min
·
3rd Avenue
42
At end of road, turn left onto NY 27A
1.1 mi
·
1 min
·
East Main Street
43
Continue on Montauk Highway
0.2 mi
·
17 sec
·
Montauk Highway
44
Continue on NY 27A
0.8 mi
·
1 min
·
Main Street
45
Arrive at destination
NY 27A
Trip Plan
Given the 2.5-hour duration, you can easily complete this 112.1-mile trip in one day. Consider departing early to avoid the heaviest traffic, especially if you're traveling on a weekday. With only one recommended stop, you have plenty of flexibility. Keep an eye on your fuel, as the estimated cost is $18, and the longest stretch without a clear exit point is 29 miles on the New York State Thruway, so plan your refueling accordingly before you hit that segment.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 56 miles from Montgomery, NY, or about 1h 11m into the drive.
The longest continuous stretch on this route runs about 29 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 25 miles or 31m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 56 miles or 1h 11m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 1m
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 Montgomery, 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 Montgomery, NY
This is one driving day of about 112.1 miles and 2h 30m.
Your first comfortable stop window is around 25 miles from Montgomery, 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 29 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 56 mi from Montgomery, NY · 1h 11m into the drive
Mid-route town
Meal stop
56 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 25 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 56 miles from Montgomery, NY, which is a good place for a longer meal and fuel stop.
Arriving in Islip, NY
The final approach into Islip, NY usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Islip, NY.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$18.45 one way
$36.90 round trip
$4.18/gal
25.4 MPG avg
39 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.52 | $19.95 | $39.91 |
| premium | $4.92 | $21.73 | $43.45 |
| diesel | $5.61 | $24.75 | $49.50 |
Estimated Tolls: $24.00
George Washington Bridge
$16.00
Throgs Neck Bridge
$6.55
New York State Thruway
(29 mi)
$1.45
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
$18
Tolls
$24
Meals
$25–$50
Total
$67–$92
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 39.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $12 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 33.6 | 0 | $11.77 | $5.38 |
| Efficient EV | 28 | 0 | $9.81 | $4.48 |
| EV Truck/SUV | 44.8 | 0 | $15.69 | $7.17 |
Gas CO2
39 kg
EV CO2
13 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
Late night in Islip on Friday
Local time
4:11 AM
EDT
Current temp
44°F
Unavailable
Live 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
3 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
2h 30m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Montgomery, NY to Islip, NY covers 112.1 miles and takes about 2h 30m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are New York State Thruway, Southern State Parkway, NJ 17. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 56 miles from Montgomery, NY. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $18.45 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 26 significant decision points across 112.1 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 38.9 miles (NY 17): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 40.2 miles (NJ 17): Highway fork - watch signs carefully. Lane positioning matters here; at 69.3 miles (I 295 / Cross Bronx Expressway): Highway fork - watch signs carefully. Lane positioning matters here.
Between Montgomery, NY and Islip, NY, road signs point toward Albany, New York City, Gsp South: Paterson, Fort Lee, New York and Cross Island Parkway South - among others.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Pages are published only after passing our data-quality checks; our methodology page documents refresh cadence, editorial standards, and known limitations.
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