Race Discovery
GREAT SOUTH BAY RUN
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GREAT SOUTH BAY RUN

Bay Shore, New York, United States View on map
Oct 03, 2026 (America/New_York local time)
Running

About this race

THE 41st ANNUAL NORTHWELL HEALTH GREAT SOUTH BAY RUN

Features 3 USATF-certified run courses, choose from the 13.1 mile Half Marathon, a 10K Run, and a perfect 5k Family Fun Run.

Each race begins and ends at the Bay Shore Marina Park, enjoy scenic courses as you run through the historic Bay Shore downtown area passing beautiful residential homes located by the Brightwaters Lakes, Cascades, and Canals. Finish with unobstructed views of Fire Island, and the Great South Bay!! 

Pick your distance

Running

1/2 Marathon

*** Athletes must maintain a 14-minute mile. Athletes must pass mile 5.5 (Main Street & South Clinton Ave before 8:45am. This is 1:15 mins after the race starts. Athletes who reach this point after 8:45am will be directed to the finish line and will only complete the 10k course *** Due to our permit and police support on the course, this strict time cut off must be enforced, no exceptions. The 13.1 mile race begins and ends at the Town of Islip Bay Shore Marina and runs through the streets of Bay Shore and Brightwaters. Enjoy scenic course as you run through the historic Bay Shore downtown and pass beautiful residential homes, the pristine Brigthwaters Lakes, Cascades and Canal, unobstructed views of Fire Island, and a panoramic view of the Great South Bay!!

Oct 03, 2026 Half-Marathon 7:30 AM
$89.00
Open

10K Run/Walk

The 10K race begins and ends at the Town of Islip Bay Shore Marina and runs through the streets of Bay Shore and Brightwaters. Enjoy scenic course as you run through the historic Bay Shore downtown and pass beautiful residential homes, the pristine Brigthwaters Lakes, Cascades and Canal, unobstructed views of Fire Island, and a panoramic view of the Great South Bay!!

Oct 03, 2026 10K 7:30 AM
$74.00
Open

5K Run/Walk

The 5k race begins and ends at the Town of Islip Bay Shore Marina and runs through the streets of Bay Shore and Brightwaters. Enjoy scenic course as you run through the historic Bay Shore downtown and pass beautiful residential homes, the pristine Brigthwaters Lakes, Cascades and Canal, unobstructed views of Fire Island, and a panoramic view of the Great South Bay!!

Oct 03, 2026 5K 7:45 AM
$54.00
Open

5K Jogging Stroller Run/Walk

PLEASE NOTE:- we ask that all runners with jogging strollers start at the rear of the field. There are no awards for athletes pushing strollers, this is NOT A RACE. The 5k race begins and ends at the Town of Islip Bay Shore Marina and runs through the streets of Bay Shore and Brightwaters. Enjoy scenic course as you run through the historic Bay Shore downtown and pass beautiful residential homes, the pristine Brigthwaters Lakes, Cascades and Canal, unobstructed views of Fire Island, and a panoramic view of the Great South Bay!!

Oct 03, 2026 5K 7:45 AM
$54.00
Open

Typical race-day weather

Based on 10 years of Open-Meteo archive data for this event's race dates in Bay Shore, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 16.5° / Maximum temperature (race-week average) 23.0°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 16.3° / Maximum feels like — heat index / wind chill (race-week average) 23.2°
Peak wind (km/h)
Strongest wind of the day (race-week average)
19.0
Precip (mm)
Precipitation over the day (race-week average)
5.2mm
Humidity
Mean relative humidity (race-week average)
77.3%
Sunrise
Sunrise at the start line on October 3, 2026 (EDT)
Sunset
Sunset at the start line on October 3, 2026 (EDT)
Daylight
Hours between sunrise and sunset on race day
11h 40m

The sun rises at 6:51 AM and sets at 6:32 PM local time (EDT) in Bay Shore on October 3, 2026 — 11h 40m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Results — GREAT SOUTH BAY RUN

2025 edition View Results
2024 edition View Results
2023 edition View Results
2022 edition View Results
2021 edition View Results
2019 edition View Results
2018 edition View Results
2017 edition View Results
2016 edition View Results

Other races near Bay Shore

Different organizers, within 40 miles, in the next three months

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 2 Bay Shore events

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