Great Bay 5K | Race for a Healthy Estuary
About this race
REGISTRATION IS NOW OPEN!!
Race Date: October 24, 2026
The Great Bay 5K is excited to hold its 28th annual race in 2026! The GB5K is the final race in the popular Seacoast Road Race Series and supports the non-profit Great Bay Stewards. The course passes the shores of Great Bay, and is a fun, fast, scenic, and mostly downhill event. In 2026, we are pleased to bring back the Great Bay 55K Challenge - run the entire 55 kilometers in one day, or complete the total distance anytime between October 1 - 24.
Wheelchair racers are welcome and will start at 8:45 a.m., prior to the 9:00 a.m. runner/walker start. No motorized wheelchairs are permitted, and wheelchair racers are responsible for maintaining their own equipment.
Participants in the 5K events will receive a long-sleeve race shirt, and everyone will get a bib with tear strips that you can take to select establishments for free beer or cider. Please keep in mind that you must register by October 1 to get a race shirt. People who register after that may claim a shirt if any remain on race day.
All proceeds from the Great Bay 5K go to the non-profit Great Bay Stewards, which supports conservation, education, community outreach, stewardship, and research of the Great Bay Estuary.
Join fellow runners on October 1, 2022 for the Great Bay 5K | Race for a Healthy Estuary. It's a fantastic 5K, Ultra featuring a flat and fast course in Stratham.
Pick your distance
Running
Great Bay 5K (Virtual)
° With this virtual race registration, you'll get a long-sleeve race shirt and a race bib with tear strips for beer and oysters.
Great Bay 55K (Virtual)
With this virtual race registration, you'll get a race hat and a race bib with tear strips for beer and oysters.
Great Bay 5K (In-person)
• With this in-person race registration, you'll get a long-sleeve race shirt and a race bib with tear strips for beer and oysters.
About Stratham
Great Bay 5K | Race for a Healthy Estuary takes place in Stratham, New Hampshire, United States. The local timezone is America/New_York.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.