Seacoast Half Marathon
Race Day Weather
Cool conditions, watch for gusts
Runners will face a steady temperature around 52°F with minimal fluctuations. Wind from the NW at 15 mph will create noticeable gusts, making pacing adjustments necessary, especially in open areas. With humidity at 75%, hydration should be prioritized, but light rain is unlikely to impact performance.
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Race Info
The Seacoast Half Marathon is an annual charity half marathon in Portsmouth, New Hampshire, first held in November 2006. It starts and finishes at Portsmouth High School and runs through Portsmouth, Rye, and New Castle along the seacoast. The race is run entirely by volunteers, and net proceeds go to a different local nonprofit beneficiary each year. The 2026 edition, its 20th, is scheduled for October 25 with net proceeds benefiting the Krempels Brain Injury Center.
