The Great Bay 5K will be held in person on Saturday, October 30, 2021. You can also run the 5K and the Great Bay 55K Challenge virtually any time from October 1 – 30, 2021.

Online registration for the in-person 5K ends October 27, 2021 at 11:59pm EDT. Online registration for the virtual 5K and 55K Challenge ends October 30. In-person registration will be available at packet pickup on Friday, October 29, 2021 from 2pm – 6pm at The Barn at the Great Bay Discovery Center, Greenland, NH and on Saturday, October 30, 2021 at Stratham Hill Park prior the start of the race. Please bring cash or check.

Register for one race or receive a discount if you sign up for both the 5K (in-person or virtual) and the 55K Challenge!