Races 10K · Northport, USA
Great Cow Harbor 10K
Great Cow Harbor 10K is a rolling 10K in Northport, USA, held each September. A storied Long Island 10K over rolling harbour-village roads — deep fields, honest hills. Mid-September is 14-22C. Northport's rolling course rewards effort-based pacing — hold steady effort on the rises and let the pace return on the descents.
Page rebuilt 2026-10-01 · race facts not independently verified — confirm dates and entries on the official race site
When
September
every year
Course
rolling
10K
Conditions
Mid-September is 14-22C.
Racing this course well
A storied Long Island 10K over rolling harbour-village roads — deep fields, honest hills.
Northport's rolling course rewards effort-based pacing — hold steady effort on the rises and let the pace return on the descents.
Pick your goal for Northport
Pace charts, weekly structure and timelines for the most common 10K 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 Great Cow Harbor 10K.
RunV works backwards from race day to today and rearranges the weeks when life interrupts. 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 Great Cow Harbor 10K?
- It is held each September in Northport, USA. Check the official Great Cow Harbor 10K site for the exact date and entry windows.
- Is the Great Cow Harbor 10K course flat?
- A storied Long Island 10K over rolling harbour-village roads — deep fields, honest hills.
- How should I train for the Great Cow Harbor 10K?
- Match your preparation to Great Cow Harbor 10K's profile and the September weather, then protect consistency — RunV's adaptive plan recalibrates after every run so one bad week never derails the block.
Not sure what to target? Predict your 10K time from a recent race →
More 10K races
Build for Northport — around your actual life
RunV engineers your block backwards from race day in September — and rebuilds it every time training doesn't go to script.
