WRC
-->
runsignup.com

Great Bay 5K | Race for a Healthy Estuary

calendar_today 24 Oct, 2026

directions_run Running

language Official Website

sell $35.00

Great Bay 5K | Race for a Healthy Estuary

About the Event

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.  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.

Races Offered

Great Bay 5K

Oct 24, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

09:00

sell

$35.00

Weather History

These values represent the 3-year monthly averages for October in Stratham.

thermostat Temperature
8.5° / 17.0°
wb_sunny Feels like
5.4° / 14.4°
light_mode Avg sunshine hours
8h 25m
water_drop Avg rainfall
2.3 mm
ac_unit Avg snowfall
air Avg wind speed
12.0 km/h (Gentle breeze)
opacity Sweat loss rate
Low
terrain Course conditions
Firm and slightly soft
sunny Max UV Index
Moderate (4.0)
humidity_mid Humidity
73.6%
wb_twilight Sunrise
06:58
nightlight Sunset
17:59

About Stratham

Learn more about the host city, Stratham.

Scenic view of

Stratham is a town in Rockingham County, New Hampshire, United States. The town had a population of 7,669 at the 2020 census. It is bounded on the west by the Squamscott River. The town is the home of the only U.S. Lindt & Sprüngli factory and the headquarters of the Timberland Corporation.

Read more launch

Hotels & Places to Stay

Race Results

Official finishing times from previous editions of Great Bay 5K | Race for a Healthy Estuary.

Place Name Time
🥇 Chris Ritchie
🥈 Sherwin Parkhurst
🥉 Shiloh Schulte
4 Matt Sawyer
5 Chris Ager

Runner Reviews

Read what other athletes have to say about their experience at the Great Bay 5K | Race for a Healthy Estuary.

No reviews yet

Be the first to share your experience with the community!

Nearby Races

Explore other exciting events happening in this same region.

Pursuit of Happiness 5k

Pursuit of Happiness 5k

location_on Exeter, New Hampshire, US

calendar_today Jul 11, 2026

Small Group Road Cycling Clinic

Small Group Road Cycling Clinic

location_on Kensington, New Hampshire, US

calendar_today Jul 18, 2026

Ocean Swim Clinic

Ocean Swim Clinic

location_on Rye, New Hampshire, US

calendar_today Jul 28, 2026

Cider Hill Farm 5K Summer Run

Cider Hill Farm 5K Summer Run

location_on Amesbury, Massachusetts, US

calendar_today Jul 11, 2026

Recommended for You

Hand-picked events we think you’ll love.

Sea to Summit

Jul 25, 2026

Sea to Summit

The Sea to Summit is not your traditional multisport race. This is an amazing day which combines the core elements of t…

Read more
South Shore *3 Beach Minimum" Half Marathon 2026

Sep 26, 2026

South Shore *3 Beach Minimum" Half Marathon 2026

The 3 Beach Minimum Half Marathon is a spectacular run that starts at expansive Nantasket Beach, then follows the coast…

Read more
Muddy Dash | Boston 2026

Aug 01, 2026

Muddy Dash | Boston 2026

Muddy Dash is not your average mud run! Get ready for up to 3 Miles of messy mayhem. You and your friends/family can ex…

Read more
SOUR APPLE 2026

Jul 12, 2026

SOUR APPLE 2026

Smithfield, Rhode Island. Deerfield Park. The Kerri "D" Sour Apple Running Festival returns on Sunday, July 12, 2026, s…

Read more

Get race deals & updates

Subscribe to our newsletter for curated race picks and discounts.