New York · 10K · plus weekend fun runs
Great Cow Harbor 10K
Great Cow Harbor 10K is a 10K and plus weekend fun runs event held in Northport, New York. Its next confirmed date is Saturday, September 18, 2027. About 5,000 runners take part across all distances.
- Race day
- September 18, 2027
- Location
- Northport, NY
- Field size
- ~5,000 runners
Race details
- Date
- Saturday, September 18, 2027
- Location
- Northport, New York
- Distances
- 10K, plus weekend fun runs
- Field size
- About 5,000 runners
- Course
- Rolling Long Island course featuring the notable 'James Street hill' climb
- Registration
- events.elitefeats.com
- Official website
- cowharborrace.com
Registration, course & weather
- Registration status
- Registration status as last checked October 2, 2026: not announced
- Start time
- 8:30 AM EDT
- Course profile
- Loop course; Road surface; USATF certified
- Typical race-day weather
- about 61°F at the start, 63% humidity, 12 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked October 2, 2026)
About the Great Cow Harbor 10K
A storied, fast-selling 10K through the seaside village of Northport, famous for its big-race atmosphere and tough James Street hill.
Rankings and notes
- Rankings and awards
- Recognized by Runner's World as one of the top 100 races in the U.S.; longtime premier Long Island road race
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Great Cow Harbor 10K: common questions
- When is the Great Cow Harbor 10K?
- The next confirmed date is Saturday, September 18, 2027.
- Where is the Great Cow Harbor 10K held?
- In Northport, New York.
- What distances does the Great Cow Harbor 10K offer?
- 10K and plus weekend fun runs.
- How many people run the Great Cow Harbor 10K?
- About 5,000 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Great Cow Harbor 10K?
- Registration is handled by the organiser at events.elitefeats.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Great Cow Harbor 10K?
- Registration status as last checked October 2, 2026: not announced.
- What time does the Great Cow Harbor 10K start?
- 8:30 AM EDT.
- What is the course like at the Great Cow Harbor 10K?
- Loop course; Road surface; USATF certified.
- What is race-day weather usually like at the Great Cow Harbor 10K?
- about 61°F at the start, 63% humidity, 12 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked October 2, 2026).
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