Trip from Smithtown, NY to Sea Cliff, NY

Compiled by the Trip.ovh editorial team · Last recalculated Apr 17, 2026 · Methodology

Drive Time

44m

Distance

29.6 mi

48 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$5

one way

EV Charging

Unknown

Best Time to Leave

Save up to 11 min

4 AM

0h 41m ★

6 AM

0h 45m

8 AM

0h 52m

10 AM

0h 47m

12 PM

0h 46m

3 PM

0h 48m

5 PM

0h 52m

8 PM

0h 42m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly

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Trip Overview

The drive from Smithtown, NY to Sea Cliff, NY covers 29.6 miles and takes about 44m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on Northern State Parkway, Cedar Swamp Road, Jericho Turnpike for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 14.2 miles on Northern State Parkway. At current regular gas prices, budget about $4.87 one way before food or hotel costs.

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 44m. Total distance: 29.6 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

44m drive, comfortable solo distance.

EV Driver

0 DC fast chargers along the route. Coverage: unknown.

First-Time Driver

Mostly highway driving (67%). Some complex stretches to watch for.

Drive Character

This is a 44m highway drive covering 29.6 miles, with most of the trip on Northern State Parkway and Cedar Swamp Road. The longest continuous stretch is about 14.2 miles on Northern State Parkway.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.

There are about 15 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Northern State Parkway is the longest continuous segment at about 14.2 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on Northern State Parkway and Cedar Swamp Road. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.6 miles in near NY 25; NY 25A / West Main Street.

Driving Effort 7/10

Focused - busy navigation packed into a short drive

Balances navigation complexity with total wheel time.

This is a short but busy drive. With 10 decision points packed into just 29.6 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 44m.

Where does it get tricky?

The main spots that need attention: at 0.6 miles (NY 25; NY 25A / West Main Street): Highway fork - watch signs carefully; at 6.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 21 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 10 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

4

0.6 mi into trip | ~0m in | NY 25; NY 25A / West Main Street

Keep slight left at fork onto NY 25; NY 25A / West Main Street

Highway fork - watch signs carefully

7

6.5 mi into trip | ~9m in

Take the exit toward N West: New York

Exit ramp - move to the correct lane early. Lane positioning matters here

Use the slight right lane. Exit SM1 W Toward N West: New York

8

21 mi into trip | ~29m in

Take the exit toward NY 106 North, NY 107 North: Oyster Bay

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 35N Toward NY 106 North, NY 107 North: Oyster Bay

4

28.1 mi into trip | ~40m in | Cedar Swamp Road

Keep slight right at fork onto Cedar Swamp Road

Highway fork - watch signs carefully

4

28.2 mi into trip | ~41m in | Sea Cliff Avenue

Turn left onto Sea Cliff Avenue

Navigation decision point

Towns Mentioned on Route Signs

Based on OSRM destination-sign hints, not a full list of every settlement the road passes.

Between Smithtown, NY and Sea Cliff, NY, road signs point toward Sm South: Bay Shore and N West: New York.

Sm South: Bay Shore

4.6 mi in | ~7m

N West: New York

6.5 mi in | ~9m

Main Roads

Road	Distance	Duration
Northern State Parkway	14.2 mi	19m
Cedar Swamp Road	6.3 mi	9m
Jericho Turnpike	4 mi	6m
Sunken Meadow State Parkway	1.7 mi	1m
Sea Cliff Avenue	1.4 mi	3m
North Broadway	0.7 mi	1m
West Main Street	0.6 mi	<1m
Roslyn Avenue	<0.1 mi	<1m

Longest stretch: Northern State Parkway — 14.2 mi, about 19m

Turn-by-Turn Driving Directions

Step-by-step road directions between Smithtown, NY and Sea Cliff, NY.

1

Start on NY 25; NY 25A

0.6 mi · 51 sec · West Main Street

2

Keep slight left at fork onto NY 25; NY 25A

179 ft · 5 sec · West Main Street

3

Continue on NY 25

4.0 mi · 6 min · Jericho Turnpike

4

Take the ramp

0.2 mi · 27 sec

Toward SM South: Bay Shore

5

Merge onto SM

1.7 mi · 1 min · Sunken Meadow State Parkway

6

Take the exit

0.2 mi · 28 sec

Exit SM1 W Toward N West: New York Use the slight right lane.

7

Continue on this road

0.1 mi · 13 sec · this road

Exit SM1 W Toward N West: New York

8

Merge onto N

14 mi · 19 min · Northern State Parkway

9

Take the exit

0.2 mi · 29 sec

Exit 35N Toward NY 106 North, NY 107 North: Oyster Bay Use the slight right lane.

10

Turn slight right onto NY 106; NY 107

0.7 mi · 1 min · North Broadway

11

Continue on NY 106; NY 107

6.2 mi · 9 min · Cedar Swamp Road

12

Keep slight right at fork onto Cedar Swamp Road

0.1 mi · 22 sec · Cedar Swamp Road

13

Turn left onto Sea Cliff Avenue

1.4 mi · 3 min · Sea Cliff Avenue

14

Turn left onto Roslyn Avenue

52 ft · 2 sec · Roslyn Avenue

15

Arrive at destination

Roslyn Avenue

Fuel & Cost

Regular Gas

$4.87 one way

$9.74 round trip

$4.18/gal 25.4 MPG avg 10 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.52	$5.27	$10.54
premium	$4.92	$5.74	$11.47
diesel	$5.61	$6.54	$13.07

Estimated Tolls: $0.28

Jericho Turnpike (4 mi) $0.28

Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.

Drive Cost (one way)

Fuel

$5

Tolls

$0

Total

$5

Estimated CO2 emission: 10.4 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $3 in charging · 0 stops · 70% less CO₂

Vehicle Type	kWh	DC Fast	Home Charge
Average EV	8.9	$3.11	$1.42
Efficient EV	7.4	$2.59	$1.18
EV Truck/SUV	11.8	$4.14	$1.89

Gas CO2

10 kg

EV CO2

3 kg (70% 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.

Forecast as of Apr 16, 2026

Origin

Smithtown, NY

Late night in Smithtown on Friday

Local time

1:36 AM

EDT

Current temp

64°F

Unavailable

Live forecast

Destination

Sea Cliff, NY

Late night in Sea Cliff on Friday

Local time

1:36 AM

EDT

Current temp

48°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

16 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

44m 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 Smithtown, NY to Sea Cliff, NY covers 29.6 miles and takes about 44m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Northern State Parkway, Cedar Swamp Road, Jericho Turnpike. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 14.8 miles from Smithtown, NY. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $4.87 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.

This is a short but busy drive. With 10 decision points packed into just 29.6 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 44m.

The main spots that need attention: at 0.6 miles (NY 25; NY 25A / West Main Street): Highway fork - watch signs carefully; at 6.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 21 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

Between Smithtown, NY and Sea Cliff, NY, road signs point toward Sm South: Bay Shore and N West: New York.

Yes. Nearby national parks include Fire Island National Seashore, Hamilton Grange National Memorial and General Grant National Memorial. There are 6 parks within detour distance of this route.

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