GREAT SOUTH BAY RUN
The Great South Bay Run offers a scenic loop through historic Bay Shore with views of lakes, canals, and Fire Island.
Race Date
Oct 3, 2026
Location
Bay Shore, NY
Quick facts
- Date
- Saturday, October 3, 2026
- Location
- Bay Shore, New York
- Distance
- Half marathon (13.1 mi) + 10K, 5K, 5K Jogging Stroller Run/Walk, Virtual Mile Challenge
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Yes
- Finishers on record
- 3,052
Highlights
Good For
Atmosphere
Course
The Experience
The Great South Bay Run, now in its 9th year, is a beloved community event held in Bay Shore, NY. Runners can choose from a half marathon, 10K, or 5K, all starting and finishing at the Bay Shore Marina Park.
The USATF-certified courses wind through historic downtown Bay Shore, past charming residential streets, and alongside the picturesque Brightwaters Lakes, Cascades, and Canals. The out-and-back route offers unobstructed views of Fire Island and the Great South Bay, providing a refreshing coastal backdrop.
With a median field size of around 382 finishers and growing, the race draws participants from approximately 12 states. While not a massive event, the Great South Bay Run fosters a strong sense of local community and offers a pleasant race-day experience, with typical temperatures ranging from 56–69°F.
Race-provided description
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!!
Logistics
Race Day
Saturday, October 3, 2026
Start Time
7:30 AM
Giveaway
Men's & Women's T-Shirt
Start Location
142 S Clinton Ave, Bay Shore, NY, 11706
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
road
Scenery
Coastal, Lake River
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.5%
Also Offers
USATF Certified Course
NY17067JG · Great South Bay Half-Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Quality Score
Runner Favorite809 years running
~382 finishers a year
growing or steady
17% returning runners
USATF certified · 3 timing sources · 3 photos
runners from 12 states
winner 1:20:05
typical high 69°F
Race Day Weather
5-year historical avgStart (Low)
56°
Afternoon (High)
69°
Pleasant conditions — light layers at start, comfortable by finish
0.2"
Precipitation
10 mph
Wind
79%
Humidity
Historical Finish Times
How 3,052 finishers actually crossed the line across 9 years.
Most recent
2025
Total finishers
3,052
Median time
2:09:36
Latest turnout
378
States
20
Turnout by year
2017–2025
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the GREAT SOUTH BAY RUN?
The GREAT SOUTH BAY RUN is held on Saturday, October 3, 2026, starting at 7:30 AM.
Where does the GREAT SOUTH BAY RUN take place?
It takes place in Bay Shore, New York.
What distances does the GREAT SOUTH BAY RUN offer?
The half marathon (13.1 miles), plus 10K, 5K, 5K Jogging Stroller Run/Walk, Virtual Mile Challenge.
Is the GREAT SOUTH BAY RUN course flat and good for a PR?
The GREAT SOUTH BAY RUN is a ultra-flat, loop course course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the GREAT SOUTH BAY RUN?
HalfRuns has finish records for 3,052 runners who have completed the GREAT SOUTH BAY RUN.
HalfRuns editorial — independent, no paid placement.
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