Great Bay 5K | Race for a Healthy Estuary
- Date Wed 1st October 2025 - Sat 25th October 2025
- Time 9:00AM EDT
- Location Stratham, New Hampshire
- Price $33.63 - $38.96
- Races 2 races
- Distances 5km, Ultra
Event summary
Join us for the exhilarating Great Bay 5K, a beloved tradition in Stratham, Rockingham, taking place from October 1 to October 25, 2025! Celebrating its 27th year, this vibrant event is the grand finale of the popular Seacoast Road Race Series and supports the important work of the Great Bay Stewards. Runners and walkers will enjoy a scenic course along the stunning shores of Great Bay, making it a fun and fast experience, especially with its mostly downhill route.
In addition to the classic 5K race, participants can take on the Great Bay 55K Challenge, tackling the total distance over the entire event period. Wheelchair racers are warmly welcomed, with a special start time at 8:45 a.m. before the main event kicks off at 9 a.m. Each registrant will receive a long-sleeve race shirt and a bib that provides access to complimentary beer or cider at select local establishments. Don’t miss your chance to support conservation and community outreach while enjoying a fantastic day of fitness and fun! Be sure to register by October 1 to secure your race shirt, and join us in making a positive impact on the Great Bay estuary.
In addition to the classic 5K race, participants can take on the Great Bay 55K Challenge, tackling the total distance over the entire event period. Wheelchair racers are warmly welcomed, with a special start time at 8:45 a.m. before the main event kicks off at 9 a.m. Each registrant will receive a long-sleeve race shirt and a bib that provides access to complimentary beer or cider at select local establishments. Don’t miss your chance to support conservation and community outreach while enjoying a fantastic day of fitness and fun! Be sure to register by October 1 to secure your race shirt, and join us in making a positive impact on the Great Bay estuary.
Organiser's Description
The Great Bay 5K is excited to hold its 27th annual race in 2025! 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 2025, 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 - 25.
Wheelchair racers are welcome and will start at 8:45 a.m, prior to the 9 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/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 are left over 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.
Wheelchair racers are welcome and will start at 8:45 a.m, prior to the 9 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/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 are left over 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.
Races
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Great Bay 5K
Incl. $3.96 Fee & Race Shirt
Sat 25th October 2025 (9:00AM EDT)
$38.96
With this in-person race registration, you'll get a long-sleeve race shirt and a race bib with tear strips for beer or cider. -
Great Bay 55K
Incl. $3.63 Fee & Race Shirt
$33.63
With this virtual race registration, you'll get a long-sleeve race shirt and a race bib with tear strips for beer and oysters.
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