Seacoast Cancer 5K
Always double-check with the organizer's website! This page may contain affiliate links.
13th Annual Seacoast Cancer 5K Run/Walk
The Seacoast Cancer 5K Run/Walk is scheduled for September 20, 2026 in Portsmouth, New Hampshire, with a virtual 5K option held September 12–19, 2026. The event is organized around the Mass General Brigham Cancer Institute at the Wentworth-Douglass Portsmouth Outpatient Center on the Pease Tradeport.
Distances offered
- 5K in-person in Portsmouth
- 5K virtual between September 12 and 19, 2026
The event is described as having a much flatter 5K course and is held rain or shine. Proceeds support patient care and wellness services at the Mass General Brigham Cancer Institute at Wentworth-Douglass Hospital, benefiting local patients, families, and staff. The event is the 13th annual edition and is presented as one of the largest road races in New Hampshire.
Registration is available in-person and virtually. Registration fees vary by date: $30 for the early bird period (June 4–July 5), $35 from July 6–September 18, and $40 for September 19–20 including day-of registration. Participants who register by August 22, 2026 are guaranteed a race shirt; shirts are available in limited quantities after that date. Children under age 8 may participate free of charge and are not eligible for a race shirt. Visit the organization's website for the most recent information.
