Great Bay 5K | Race for a Healthy Estuary
- Date
- October 24, 2026
- Location
- Stratham Hill Park, Stratham, NH
- 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.
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
57°
Typical Low
38°
Chance of Rain
35%
Based on US Climate Normals data from Greenland, 4 mi from the venue.
Host City
About Stratham, NH
Elevation
73 ft
Nearest Airport
PSM
Portsmouth International Airport at Pease · 6 mi
Major Hub
BOS
Boston Logan International Airport · 46 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Great Bay 5K | Race for a Healthy Estuary, put it on the calendar, and turn “someday” into a start date.
138
Days to train
- Race
- Great Bay 5K | Race for a Healthy Estuary
- Date
- October 24, 2026
- Location
- Stratham Hill Park, Stratham, NH
Coming Up
More Running races near Stratham, NH
LIVE Saunders at Rye Harbor 10K
10K
7 miles away
Connor's Climb Foundation 5k and Family Walk 2026
5K
4 miles away
2nd Annual New England Ostomy 5k
5K
7 miles away
Dan Healy Memorial 5K
5K
4 miles away
From Endurance Grid
About This Sport
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 race held in Stratham, New Hampshire on October 24, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Great Bay 5K | Race for a Healthy Estuary?
- Saturday, October 24, 2026 in Stratham, New Hampshire at Stratham Hill Park, Stratham, NH. Check the 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 the event's registration page. Confirm pricing and distances there, and sign up.
Great Bay 5K | Race for a Healthy Estuary
Oct 24, 2026