Great Bay 5K | Race for a Healthy Estuary logo
running

Great Bay 5K | Race for a Healthy Estuary

Date
October 24, 2026
Distance
Great Bay 5K

From the Organizer

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. 

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.

Distances & Pricing

Great Bay 5K9 AMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.

Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is the Great Bay 5K | Race for a Healthy Estuary?
Great Bay 5K | Race for a Healthy Estuary is a running event held in Stratham, NH. Learn more about the different endurance sports here.
When and where is the Great Bay 5K | Race for a Healthy Estuary?
Saturday, October 24, 2026 in Stratham, NH at Stratham Hill Park, Stratham, NH. Check the official event page for exact start times and wave schedules.
How do I register for the Great Bay 5K | Race for a Healthy Estuary?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

Great Bay 5K | Race for a Healthy Estuary

Oct 24, 2026

Register →