How far is Brentwood, NY from Brookhaven, NY?
The driving distance from Brentwood, NY to Brookhaven, NY is about 21.1 miles (33.9 km), with a travel time of about 00h 31m by car.
- The straight-line flight distance is about 17.3 miles (27.9 km).
- For a round trip, plan for roughly 01h 02m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 31m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in and county seat of Navajo County, Arizona, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Brentwood and Brookhaven.
Turn-by-Turn Driving Directions
Step-by-step road directions between Brentwood and Brookhaven.
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1
Start on Suffolk Avenue
1.4 mi · 3 min · Suffolk Avenue
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2
Turn left onto Joshuas Path
1.5 mi · 2 min · Joshuas Path
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3
Turn right onto Express Drive South
140 m · 9 sec · Express Drive South
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4
Take the ramp slight left toward I 495 East: Riverhead
744 ft · 18 sec
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5
Merge slight left onto Long Island Expressway
12.1 mi · 17 min · Long Island Expressway
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6
Take the exit slight right toward CR 16: Horse Block Road, Centereach, Shirley
1308 ft · 28 sec
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7
Turn straight onto Express Drive South
1108 ft · 21 sec · Express Drive South
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8
Turn slight right onto Horseblock Road
4.1 mi · 6 min · Horseblock Road
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9
At the end of the road, turn right onto Montauk Highway
1.4 km · 2 min · Montauk Highway
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10
Turn left onto South Country Road
2057 ft · 50 sec · South Country Road
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11
Arrive at your destination
0 m · 1 sec · South Country Road
Car Route Details
A richer read on the saved driving route between Brentwood and Brookhaven.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Long Island Expressway
Merge slight left onto Long Island Expressway
12.1 mi · 00h 17m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving Brentwood and Mostly Sunny near Brookhaven.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Brentwood to Brookhaven?
The road trip is about 21.1 miles (33.9 km) and usually takes 00h 31m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Holbrook is a useful midpoint, sitting about 10.5 miles from Brentwood and 10.6 miles from Brookhaven.
How much longer is the road route than the straight-line distance?
The direct path is about 17.3 miles (27.9 km), while the road route adds roughly 3.8 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:28 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.97 one way or $5.93 round trip. Estimated CO2 is about 6.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Brentwood and Mostly Sunny near Brookhaven.
Stop Ideas Near Holbrook
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Holbrook.
Bridgeport
Stamford Transportation Center
Union Station
New Rochelle station
Flight Path Map
This map shows the direct air route between Brentwood and Brookhaven. Straight-line distance: 17.31 mi (27.86 km).
#1 Brentwood
Census-designated place in Suffolk County, New York
| Population | 60,664 |
| Coordinates | 40.7812100, -73.2462300 |
| Altitude | 24 |
| Country | United States |
#2 Brookhaven
This town in Suffolk County, New York, is the most populous in the state.
| Population | 479,883 |
| Coordinates | 40.7792700, -72.9153800 |
| Altitude | 3 |
| Country | United States |
End: Brookhaven (-72.91538, 40.77927)
Estimated Travel Time
Distance: 34 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 42m |
| 40 mph (64.37 km/h) | 00h 31m |
| 50 mph (80.47 km/h) | 00h 25m |
| 60 mph (96.56 km/h) | 00h 21m |
| 70 mph (112.65 km/h) | 00h 18m |
| 80 mph (129 km/h) | 00h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $2.97 | $5.93 |
| Mid-grade | $4.48 | $3.32 | $6.63 |
| Premium | $4.86 | $3.60 | $7.19 |
| Diesel | $4.69 | $3.47 | $6.95 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in New York · Apr 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.