Our 5K is held on one of the most beautiful courses in New England. It starts and finishes at the Great Island Common at the mouth of the Piscataqua River. The course runs through the scenic and historic roads of New Castle NH. We have the largest free raffle in New England, great food and a high quality race hat to the first 700 registered. We also offer 3 kids fun runs and a new playground to entertain the whole family
All proceeds of the GI5K go to Charity.
We hope you can join us for the 32nd Great Island 5K!
Oct 11, 2026
Distance — 5K
Type — Running
10:00
$40.00
Oct 11, 2026
Distance — 5K
Type — Running
10:00
$40.00
Oct 11, 2026
Distance — Kids Fun Run
Type — Running
11:15
$10.00
These values represent the 3-year monthly averages for October in New Castle.
Learn more about the host city, New Castle.
New Castle is a town in Rockingham County, New Hampshire, United States. The population was 1,000 at the 2020 census. It is the easternmost town in New Hampshire and the smallest by area, and it is the only town in the state located entirely on islands. It is home to Fort Constitution Historic Site, Fort Stark Historic Site, and the New Castle Common, a 31-acre (13 ha) recreation area on the Atlantic Ocean. New Castle is also home to a United States Coast Guard station, as well as the historic Wentworth by the Sea hotel.
Read more launchTours and activities near New Castle, powered by Viator.
Official finishing times from previous editions of Great Island 5K.
| Place | Name | Time | |
|---|---|---|---|
| 🥇 | Mike Guarascio | — | |
| 🥈 | Victoria Valway | — | |
| 🥉 | Dan Regan | — | |
| 4 | Nathaniel Zike | — | |
| 5 | Michael O'Brien | — | |
| 6 | Jan Brooks | — | |
| 7 | Denis Goupil | — | |
| 8 | Brian Pimentel | — | |
| 9 | Geri Clifford | — | |
| 10 | Bob Kennedy | — | |
| 11 | Wiley Semrau | — | |
| 12 | Heather Smith | — | |
| 13 | John DuBois | — | |
| 14 | Rich Molloy | — | |
| 15 | Andrew Arsenault | — | |
| 16 | Katherine Wilberton | — | |
| 17 | Wendy Puryear | — | |
| 18 | Nanci Sirois | — | |
| 19 | Tom O'Donohue | — | |
| 20 | James Taylor | — | |
| 21 | Ty Powers | — | |
| 22 | M. Herman | — | |
| 23 | Julie Sprague | — | |
| 24 | Donna Sarasin | — | |
| 25 | Walter Fortier | — | |
| 26 | Carolyn Dowling | — | |
| 27 | Chris Druge | — | |
| 28 | Sherry Druge | — | |
| 29 | Casey Spencer | — | |
| 30 | Reeve Kennedy | — | |
| 31 | Louise Chini | — | |
| 32 | Chrisann Papera | — | |
| 33 | Laura Wilson | — | |
| 34 | Tom Riddle | — | |
| 35 | Gregory Riddle | — | |
| 36 | Sadie Holdridge | — | |
| 37 | Karen McLaughlin | — | |
| 38 | Lindsay Carroll | — | |
| 39 | Johanna Englert | — | |
| 40 | Joan Gootee | — | |
| 41 | Christina Baker | — | |
| 42 | Doug Zechel | — | |
| 43 | Dave Bovee | — | |
| 44 | Jeffrey Upton | — | |
| 45 | Kat Anania | — | |
| 46 | Robin Wesely | — | |
| 47 | BRUCE HOLDRIDGE | — | |
| 48 | Alynna Lyon | — | |
| 49 | Jessica Greenfield | — | |
| 50 | Brett Hermans | — |
Read what other athletes have to say about their experience at the Great Island 5K.
Be the first to share your experience with the community!
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