Origin
Islip, NY
Late night in Islip on Sunday
Local time
3:49 AM
EDT
Current temp
44°F
Unavailable
Live forecast
Trip from Islip, NY to Mount Vernon, NY
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
1h 11m
Distance
48.6 mi
78 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$8
one way
EV Charging
Fair
4 stations
Best Time to Leave
4 AM
1h 6m
★
6 AM
1h 12m
8 AM
1h 23m
10 AM
1h 16m
12 PM
1h 15m
3 PM
1h 16m
5 PM
1h 23m
8 PM
1h 8m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Islip, NY
Wikimedia Commons
Mount Vernon, NY
Wikimedia Commons
Trip Overview
This straightforward 48.6-mile drive from Islip, NY, to Mount Vernon, NY, is easily manageable in about 1 hour and 11 minutes, making it a perfect single-day trip. You'll primarily navigate well-established parkways and expressways, with a projected fuel cost of around $8. The route is focused on efficient highway travel, so don't expect many detours or leisurely stops. Given its relatively short distance and direct nature, this trip is ideal for getting from point A to point B without significant time commitment. It's a practical option for anyone needing to traverse this section of New York.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Southern State Parkway | 24.7 mi | 31m |
| Clearview Expressway | 5 mi | 5m |
| Throgs Neck Expressway | 2.5 mi | 3m |
| Throgs Neck Bridge | 2 mi | 3m |
| Hutchinson River Parkway | 1.9 mi | 2m |
| Main Street | 1.8 mi | 3m |
| South Fulton Avenue | 1.3 mi | 2m |
| Cross Island Parkway | 1.3 mi | 1m |
Longest stretch:
Southern State Parkway
— 24.7 mi, about 31m
Turn-by-Turn Driving Directions
Step-by-step road directions between Islip, NY and Mount Vernon, NY.
1
Start on NY 27A
0.8 mi
·
1 min
·
Main Street
2
Continue on Montauk Highway
0.2 mi
·
19 sec
·
Montauk Highway
3
Continue on NY 27A
1.1 mi
·
1 min
·
Main Street
4
Turn right onto 3rd Avenue
0.6 mi
·
1 min
·
3rd Avenue
5
Continue on CR 57
0.3 mi
·
36 sec
·
Rossevelt Street
6
Continue on CR 57
0.7 mi
·
1 min
·
Howells Road
Use the left lane.
7
Turn straight onto Sunrise Highway
163 ft
·
3 sec
·
Sunrise Highway
8
Keep slight right at fork onto CR 57
0.3 mi
·
36 sec
·
Howells Road
Toward Howells Road, Deer Park
Use the right lane.
9
Continue on CR 57
0.6 mi
·
1 min
·
Bay Shore Road
10
Take the ramp
0.1 mi
·
19 sec
Toward SO West: New York
11
Continue on this road
363 ft
·
8 sec
·
this road
12
Merge onto SO
25 mi
·
31 min
·
Southern State Parkway
Use the straight / right lanes.
13
Take the exit
0.3 mi
·
43 sec
Toward Cross Island Parkway North, Whitestone Bridge
Use the slight right lane.
14
Merge onto CI
1.3 mi
·
1 min
·
Cross Island Parkway
15
Take the exit
317 ft
·
9 sec
Exit 26B
Toward NY 24: UBS Arena-Belmont Park
Use the slight right lane.
16
Keep slight left at fork
437 ft
·
12 sec
Toward NY 24 West: Hempstead Avenue
Use the slight left / slight right lanes.
17
Keep slight right at fork
0.1 mi
·
15 sec
Toward Cross Island Parkway North, Hempstead Avenue West
18
Keep slight right at fork
266 ft
·
8 sec
Toward Hempstead Avenue West
Use the slight left / slight right lanes.
19
Continue on this road
0.1 mi
·
13 sec
·
this road
Toward Grandstand, Hempstead Avenue West
20
Keep slight left at fork
100 ft
·
4 sec
Toward Hempstead Avenue
21
Turn right onto NY 24
1.0 mi
·
2 min
·
Hempstead Avenue
Use the right lane.
22
Turn left onto Jamaica Avenue
0.1 mi
·
17 sec
·
Jamaica Avenue
23
Turn right onto NY 24
0.7 mi
·
1 min
·
212th Street
24
Continue on I 295
5.0 mi
·
5 min
·
Clearview Expressway
Toward I 295 North: Clearview Expressway, Through Neck Bridge
Use the straight / slight right lanes.
25
Continue on I 295
2.0 mi
·
3 min
·
Throgs Neck Bridge
26
Continue on I 295
0.7 mi
·
1 min
·
Throgs Neck Expressway
Use the straight / slight right lanes.
27
Keep slight right at fork onto I 695
1.8 mi
·
2 min
·
Throgs Neck Expressway
Exit 10
Toward I 695 North: New Haven
Use the straight / slight right lanes.
28
Merge onto I 95
1.0 mi
·
1 min
·
Bruckner Expressway
29
Continue on I 95
0.2 mi
·
18 sec
·
New England Thruway
30
Take the exit
430 ft
·
14 sec
Exit 9
Toward Hutchinson Parkway North
Use the slight right lane.
31
Keep slight left at fork
0.2 mi
·
31 sec
Toward Hutchinson River Parkway North
Use the straight / right lanes.
32
Merge onto HR
1.9 mi
·
2 min
·
Hutchinson River Parkway
Use the straight / slight right lanes.
33
Take the exit
0.2 mi
·
21 sec
Toward US 1: Pelham Manor
34
Keep slight left at fork
264 ft
·
14 sec
Toward US 1 South: Shopping Center, Saint Paul's Church
Use the left / right lanes.
35
Turn left onto US 1
0.2 mi
·
29 sec
·
Boston Post Road
Use the left lane.
36
Turn right onto Pelham Parkway
0.3 mi
·
35 sec
·
Pelham Parkway
37
Continue on South Fulton Avenue
1.3 mi
·
2 min
·
South Fulton Avenue
38
Turn left onto East 1st Street
0.4 mi
·
54 sec
·
East 1st Street
39
Turn right onto Gramatan Avenue
361 ft
·
13 sec
·
Gramatan Avenue
40
Turn right onto East Prospect Avenue
56 ft
·
1 sec
·
East Prospect Avenue
41
Arrive at destination
East Prospect Avenue
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
24 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 11 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 24.3 miles from Islip, 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 275 decision points cluster between mile 3.6 and 46.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
9
3.6 mi into trip
|
~6m in
|
CR 57 / Howells Road
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
Use the right lane.
Toward Howells Road, Deer Park
8
31.1 mi into trip
|
~43m in
Keep slight left at fork toward NY 24 West: Hempstead Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward NY 24 West: Hempstead Avenue
8
31.2 mi into trip
|
~43m in
Keep slight right at fork toward Hempstead Avenue West
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Toward Hempstead Avenue West
8
40.9 mi into trip
|
~58m in
|
I 695 / Throgs Neck Expressway
Keep slight right at fork onto I 695 / Throgs Neck Expressway toward I 695 North: New Haven
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 10
Toward I 695 North: New Haven
9
46.3 mi into trip
|
~1h 6m in
Keep slight left at fork toward US 1 South: Shopping Center, Saint Paul's Church
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the left / right lanes.
Toward US 1 South: Shopping Center, Saint Paul'...
Fuel & Cost
Regular Gas
$8.00 one way
$16.00 round trip
$4.18/gal
25.4 MPG avg
17 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.52 | $8.65 | $17.30 |
| premium | $4.92 | $9.42 | $18.84 |
| diesel | $5.61 | $10.73 | $21.46 |
Estimated Tolls: $6.55
Throgs Neck Bridge
$6.55
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Drive Cost (one way)
Fuel
$8
Tolls
$7
Total
$15
Estimated CO2 emission: 17 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $5 in charging · 0 stops · 65% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 14.6 | 0 | $5.10 | $2.33 |
| Efficient EV | 12.2 | 0 | $4.25 | $1.94 |
| EV Truck/SUV | 19.4 | 0 | $6.80 | $3.11 |
Gas CO2
17 kg
EV CO2
6 kg (65% 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
Mount Vernon, NY
Late night in Mount Vernon on Sunday
Local time
3:49 AM
EDT
Current temp
52°F
Unavailable
Live forecast
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
8 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
1h 11m 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.
What kind of drive is this?
Expect a highway-focused experience for about 75% of this 48.6-mile journey. The drive begins on the Southern State Parkway, which accounts for the longest uninterrupted stretch at 24.7 miles, offering a consistent pace. You'll then transition to the Clearview Expressway and subsequently the Throgs Neck Expressway, maintaining a predominantly high-speed environment. This route is designed for efficiency, meaning the character of the road remains largely consistent, favoring smooth, albeit potentially busy, highway driving throughout its duration.
75% highway — fuel and pacing are the main things to plan.
41 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 24.7 mi on Southern State Parkway.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on Southern State Parkway and Clearview Expressway. 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.
Driving Effort
10/10
Demanding - stay alert through the decision-heavy sections
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 48.6 miles you will encounter 27 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 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.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Islip, NY and Mount Vernon, NY, road signs point toward Deer Park, So West: New York, Cross Island Parkway North, Hempstead Avenue West, Grandstand and Hutchinson Parkway North - among others.
Deer Park
3.6 mi in
|
~6m
|
via CR 57
So West: New York
4.5 mi in
|
~8m
Cross Island Parkway North
29.4 mi in
|
~40m
Hempstead Avenue West
31.1 mi in
|
~43m
Grandstand
31.3 mi in
|
~43m
Hutchinson Parkway North
43.9 mi in
|
~1h 2m
Hutchinson River Parkway North
44 mi in
|
~1h 2m
About the Cities
Starting 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
Arriving in Mount Vernon, NY
Full guide →Founded 1892
Mount Vernon is a city in Westchester County in New York.
Top landmarks
- • Saint Paul's Church National Historic Site — national Historic Site of the United States
- • Trinity Episcopal Church Complex — church building in Mount Vernon, New York, United States
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 1h 11m. Total distance: 48.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 11m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (75%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 24.7 miles on Southern State Parkway. The full list of main roads is in the Roads section above.
Expect about $6.55 in tolls one way, starting with Throgs Neck 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.
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 Mount Vernon, 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 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.
Yes — Hamilton Grange National Memorial, General Grant National Memorial and Fire Island National Seashore (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 Mount Vernon, NY before heading back.
How this page is built
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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