Races Marathon · Bay Shore, USA
Suffolk County Marathon
Suffolk County Marathon is a flat marathon in Bay Shore, USA, held each October. A road course on Long Island's south shore from Babylon to Gardiner County Park in Bay Shore. It crosses the Robert Moses Causeway with the Great South Bay either side. Listings call it flat and fast. Mid-October on Long Island is mild but can be windy and wet, typically 8 to 17°C. Flat courses like Bay Shore's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
October
every year
Course
flat
Marathon
Conditions
Mid-October on Long Island is mild but can be windy and wet, typically 8 to 17°C.
Racing this course well
A road course on Long Island's south shore from Babylon to Gardiner County Park in Bay Shore. It crosses the Robert Moses Causeway with the Great South Bay either side. Listings call it flat and fast.
Flat courses like Bay Shore's reward metronomic pacing — the danger is going out faster than goal pace because it feels cheap early.
Getting a place
- How you get in
- Open entry: first come, first served
Official Suffolk County Marathon site →Checked November 2026
Race day
- Start time
- 07:30
- Also on the day
- half-marathon, 10k, 5k
The course in numbers
The Robert Moses Causeway crossing is the main feature, and it is open to wind off the Great South Bay.
- Layout
- Point-to-point
- Surface
- Paved road
Worth knowing
- The 2026 race was the 12th annual Suffolk County Marathon Weekend.
- The marathon, half and 10K all start together on the Sunday, and the 5K is on the Saturday.
Pick your goal for Bay Shore
Pace charts, weekly structure and timelines for the most common marathon goals:
We don’t hold a confirmed date for this edition, so any countdown comes from the date you enter here.
Build your training around Suffolk County Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Suffolk County Marathon?
- It is held each October in Bay Shore, USA. Check the official Suffolk County Marathon site for the exact date and entry windows.
- Is the Suffolk County Marathon course flat?
- A road course on Long Island's south shore from Babylon to Gardiner County Park in Bay Shore. It crosses the Robert Moses Causeway with the Great South Bay either side. Listings call it flat and fast.
- How do I enter the Suffolk County Marathon?
- Open entry: first come, first served.
- How should I train for the Suffolk County Marathon?
- Match your preparation to Suffolk County Marathon's profile and the October weather, then protect consistency — with RunV Premium you can adapt your plan to fit your week, so one bad week never derails the block.
Not sure what to target? Predict your marathon time from a recent race →
More marathon races
Supplements research for this distance
Build for Bay Shore — around your actual life
RunV engineers your block backwards from race day in October — and adapts it when training doesn't go to script. You approve every change.
