Great Bay 5K | Race for a Healthy Estuary
Wed, Sep 30, 2026, 9:00 AM EDT
- Location
- Stratham, NH
- Stratham Hill Park, Rt. 33, 03885
- Type
- VIRTUAL
Sign up and verify details on the organizer’s official page.
Vibe analysis coming soon
Course feel, difficulty, and community fit are being added to this listing. Check back, and always confirm details on the official registration page.
At a glance
Perks & features
- Shirt
ShirtFrom the public listing — confirm on the official site.
Auto-drafted from the public listing — confirm details on the official event page before signing up.
Distances & registration
2 optionsRegistration for all distances is through the official signup link above.
- 5K
Sat, Oct 24, 9:00 AM EDT · From $38.96
Opens Mar 31, 2026, 8:00 PM EDT · Closes Aug 30, 2026, 7:59 PM EDT
- 55K
Wed, Sep 30, 9:00 AM EDT · From $33.63
Opens Mar 31, 2026, 8:00 PM EDT · Closes Aug 30, 2026, 7:59 PM EDT
From the organizer
REGISTRATION OPENS ON APRIL 1, 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.
Also in this area
Easier options nearby
Lower-difficulty races in the same state.