5KRegistration open

Great Island 5K

Sunday, October 11, 2026New Castle, New Hampshire

Entry from: $10
Days to go: 5

At a glance

Date: Oct 11, 2026
Location: New Castle, New Hampshire
Distances: 5K
Registration: Registration open until Oct 10, 2026, via runsignup.com
Prize money: $1,700 purse
Prize payout: Cash awards are paid to the top three open male and female finishers ($200/$125/$75 each), to the top three male and female age-grade masters finishers ($125/$75/$50 each), plus a $400 bonus for setting a new course record.
Prize source: greatisland5k.orgVerified Oct 4, 2026
Official site: greatisland5k.org
Listed from: RunSignUp
Last checked: Oct 5, 2026

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About this race

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!

Key dates

Registration opens

Feb 20, 2026

Registration closes

Oct 10, 2026

Standard ends

Oct 10, 2026

Race day

Oct 11, 2026

Pricing

5K Race Walk

Standard, until Oct 10, 2026

$40

5K Run and Walk

Standard, until Oct 10, 2026

$40

Kids Fun Run

Standard, until Oct 10, 2026

$10

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