Great Bay 5K | Race for a Healthy Estuary
Great Bay 5K | Race for a Healthy Estuary is a running race on October 24, 2026 in Stratham, NH, with an entry fee of $35.
- Date
- October 24, 2026 (93 days to go)
- Location
- Stratham Hill Park, Stratham, NH
- Price
- $35
- Sport
- Running
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
City 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.
93
Days to train
- Race
- Great Bay 5K | Race for a Healthy Estuary
- Date
- October 24, 2026
- Location
- Stratham Hill Park, Stratham, NH
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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 an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More Running races near Stratham, NH
Sabine Strong 3.3 & Kids Dash
1 Mile · 5K · From $10 · Newington Old Town Hall
6 miles away
9/11 Heroes Run - Exeter, NH
5K · From $41 · Exeter High School
4 miles away
Connor's Climb Foundation 5k and Family Walk 2026
5K · From $35 · 40 Linden Street
4 miles away
Seacoast Half Marathon
Half Marathon · From $89 · Portsmouth High School
6 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Stratham than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to StrathamFrequently Asked Questions (FAQs)
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Great Bay 5K | Race for a Healthy Estuary
Oct 24, 2026