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Trip from Brookhaven, NY to Lake Ronkonkoma, NY

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Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 26, 2026 · Editorial standards

Drive Time

24m

Distance

15.4 mi

25 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$3

one way

EV Charging

Unknown

Best Time to Leave

Save up to 7 min
4 AM
0h 22m ★
6 AM
0h 24m
8 AM
0h 29m
10 AM
0h 26m
12 PM
0h 25m
3 PM
0h 26m
5 PM
0h 28m
8 PM
0h 23m

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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Downtown Brookhaven, NY, NY

Brookhaven, NY

Wikimedia Commons

Downtown Lake Ronkonkoma, NY, NY

Lake Ronkonkoma, NY

John Baker

Trip Overview

Brookhaven, NY to Lake Ronkonkoma, NY is 15.4 miles and takes about 24 minutes via Long Island Expressway and Horseblock Road, with a fuel budget near $3 and enough daylight to finish in a day. This short trip stays within New York's Northeast region, making it a convenient local hop. The route is a mix of highway and surface roads, suitable for a quick errand or connecting between points on Long Island. Given its brevity, it's easily manageable for a single day, requiring minimal planning.

Main Roads

Road Distance Duration
Long Island Expressway 7.2 mi 9m
Horseblock Road 4.2 mi 6m
Rosevale Avenue 0.9 mi 1m
Montauk Highway 0.8 mi 1m
Ocean Avenue 0.6 mi 1m
South Country Road 0.4 mi 1m
Gibbs Pond Road 0.3 mi <1m
Margaret Drive 0.2 mi <1m
Longest stretch: Long Island Expressway — 7.2 mi, about 9m

Turn-by-Turn Driving Directions

Step-by-step road directions between Brookhaven, NY and Lake Ronkonkoma, NY.

1

Start on CR 36

0.4 mi · 46 sec · South Country Road
2

Continue on South Country Road

354 ft · 16 sec · South Country Road
3

Turn straight onto CR 80

0.8 mi · 1 min · Montauk Highway
4

Turn left onto CR 16

4.2 mi · 6 min · Horseblock Road
Use the left lane.
5

Turn left onto Express Drive North

0.2 mi · 14 sec · Express Drive North
Use the left lane.
6

Take the ramp

0.2 mi · 21 sec
Toward I 495 WEST: New York
7

Merge onto I 495

7.2 mi · 9 min · Long Island Expressway
Use the straight / slight right lanes.
8

Take the exit

0.2 mi · 25 sec
Exit 59 Toward CR 93: Ocean Avenue, Oakdale, Ronkonkoma Use the straight / slight right lanes.
9

Turn straight onto Express Drive North

282 ft · 9 sec · Express Drive North
10

Turn right onto CR 93

0.6 mi · 1 min · Ocean Avenue
Use the straight / right lanes.
11

Continue on CR 93

0.9 mi · 1 min · Rosevale Avenue
12

Continue on Gibbs Pond Road

0.3 mi · 43 sec · Gibbs Pond Road
13

Turn right onto Margaret Drive

0.2 mi · 56 sec · Margaret Drive
14

Arrive at destination

Margaret Drive

Heads-up: tricky spots

5 of 7

5 decision points cluster between mile 5.5 and 15.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

5
5.5 mi into trip | ~8m in | Express Drive North

Turn left onto Express Drive North

Lane positioning matters here

Use the left lane.
5
5.9 mi into trip | ~9m in | I 495 / Long Island Expressway

Merge onto I 495 / Long Island Expressway

Merge point - match speed before joining. Lane positioning matters here

Use the straight / slight right lanes.
8
13.1 mi into trip | ~19m in

Take the exit toward CR 93: Ocean Avenue, Oakdale, Ronkonkoma

Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Exit 59 Toward CR 93: Ocean Avenue, Oakdale, Ronkonkoma
5
13.3 mi into trip | ~19m in | CR 93 / Ocean Avenue

Turn right onto CR 93 / Ocean Avenue

Lane positioning matters here

Use the straight / right lanes.
5
15.2 mi into trip | ~23m in | Margaret Drive

Turn right onto Margaret Drive

Navigation decision point

Fuel & Cost

Regular Gas

$2.50 one way

$5.01 round trip

$4.13/gal 25.4 MPG avg 5 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.47 $2.71 $5.42
premium $4.87 $2.95 $5.90
diesel $5.40 $3.28 $6.55

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$3

Estimated CO2 emission: 5.4 kg one way. Prices: EIA weekly data, 2026-04-20.

Driving Electric?

About $2 in charging · 0 stops · 60% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 4.6 0 $1.62 $0.74
Efficient EV 3.9 0 $1.35 $0.62
EV Truck/SUV 6.2 0 $2.16 $0.99

Gas CO2

5 kg

EV CO2

2 kg (60% 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 26, 2026

Origin

Brookhaven, NY

Late night in Brookhaven on Sunday

Local time

5:36 AM

EDT

Current temp

39°F

Rain Showers

E 9 mph 98% chance Live forecast

Flood Warning

Flood Warning issued April 26 at 12:24AM EDT by NWS Binghamton NY

Flood Warning

Flood Warning issued April 25 at 8:05PM EDT until April 26 at 11:00AM EDT by NWS Buffalo NY

Destination

Lake Ronkonkoma, NY

Late night in Lake Ronkonkoma on Sunday

Local time

5:36 AM

EDT

Current temp

39°F

Rain Showers

E 9 mph 98% chance Live forecast

Flood Warning

Flood Warning issued April 26 at 12:24AM EDT by NWS Binghamton NY

Flood Warning

Flood Warning issued April 25 at 8:05PM EDT until April 26 at 11:00AM EDT by NWS Buffalo NY

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

Very similar conditions

Both ends of the route are sitting at about the same temperature right now.

Road read

24m on the road

The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

What kind of drive is this?

This drive features a mixed highway and surface road profile, with 47% of the total distance on highways. You'll encounter the Long Island Expressway for a stretch of 7.2 miles before transitioning to surface roads like Horseblock Road and Rosevale Avenue. Expect a moderate number of exits and merges as you navigate between these road types.

47% highway, the rest on surface roads — varied driving throughout.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 7.2 mi on Long Island Expressway.

How Hard Is This Drive?

4/10

This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes around 5.5 miles in near Express Drive North.

Driving Effort 4/10

Easy - simple navigation with a manageable amount of wheel time

Balances navigation complexity with total wheel time.

This is a straightforward 24m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.

Where does it get tricky?

The main spots that need attention: at 5.5 miles (Express Drive North): Lane positioning matters here; at 5.9 miles (I 495 / Long Island Expressway): Merge point - match speed before joining. Lane positioning matters here; at 13.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

Towns Mentioned on Route Signs

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

Between Brookhaven, NY and Lake Ronkonkoma, NY, road signs point toward Oakdale and Ronkonkoma.

Oakdale

13.1 mi in | ~19m

Ronkonkoma

13.1 mi in | ~19m

About the Cities

Starting in Brookhaven, NY

Full guide →

Founded 1655

Brookhaven is the largest town in Suffolk County, part of Long Island, New York. With 485,000 residents (2020). It includes a patchwork of villages and other communities, and is the only town on the island to touch both the Long Island Sound and Atlantic Ocean. The villages of Belle Terre, Bellport, Lake Grove, Mastic Beach, Old Field, Patchogue, Poquott, Port Jefferson, and Shoreham are semi-autonomous, and provide their own services in addition to those provided by the town. Other prominent communities include Mount Sinai, Stony Brook, and Fire Island, a long and car-free resort island off the south coast of the town.

Top landmarks

  • • Wardenclyffe Tower — early experimental wireless transmission station designed and built by Nikola Te...
  • • West Meadow Beach Historic District — historic district in the United States
  • • Stony Brook Grist Mill — watermill

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 24m. Total distance: 15.4 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

24m drive, comfortable solo distance.

EV Driver

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

First-Time Driver

Mostly highway driving (47%). Straightforward navigation.

Scenic Drive

Mixed highway & surface route profile with national parks nearby.

Frequently Asked Questions

The longest stretch is about 7.2 miles on Long Island Expressway. The full list of main roads is in the Roads section above.

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 5.5 miles (Express Drive North): Lane positioning matters here; at 5.9 miles (I 495 / Long Island Expressway): Merge point - match speed before joining. Lane positioning matters here; at 13.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

Yes — Fire Island National Seashore. 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 Lake Ronkonkoma, 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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