In 49 days · Sun, Oct 11, 2026
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Sunday, October 11th, 2026
265 Wentworth Road, New Castle NH
5K
50–62°F · some rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
45–63°F
dry
2024
45–64°F
dry
2023
47–63°F
dry
2022
46–60°F
dry
2021
56–65°F
dry
2020
51–67°F
dry
2019
50–57°F
dry
2018
54–59°F
rain
2017
56–64°F
dry
2016
45–59°F
dry
Best months to race in New Hampshire →
About this race
🏃♂️ Race Overview
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.
🎉 Event Highlights
- Free Raffle: We have the largest free raffle in New England.
- Great Food: Enjoy delicious food available at the event.
- Race Hat: High quality race hat for the first 700 registered.
- Kids Fun Runs: We offer 3 kids fun runs and a new playground to entertain the whole family.
❤️ Charity Support
All proceeds of the GI5K go to Charity.
🗓️ Join Us
We hope you can join us for the 32nd Great Island 5K!
🌐 Race Information
For more details, visit the official race page: Great Island 5K Race
Course map
Train with a club
Run clubs near New Castle to train with before race day.
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