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Lace up your shoes and get registered for the 2021 Seaside Semper Five 5K & 1 Mile Fun Run!  The event will be LIVE this year, but if you won’t be near the Jersey Shore, you can still run with us virtually!


  • Date: Saturday, September 25th, 2021
  • Time: 1 Mile Fun Run – 9:00 a.m. 5K – 9:30 a.m.
  • Location: 100 Ocean Terrace, Seaside Heights, NJ

Registration – https://www.seasidesemperfive.org/

  • 1 Mile Fun Run – $55.00 plus $4.19 processing fee (must register by September 17th)
  • 5K – $55.00 plus $4.19 processing fee (must register by September 17th)
  • Registration includes a high-quality long-sleeved Under Armour Locker T-Shirt with custom race logo design
  • Registrations dated after September 17th will be charged an additional $5


The 1-mile and 5K course are both out-and-back routes that will take you along the Boardwalk in Seaside Heights.  The 5K course will extend beyond the Boardwalk for a portion of the course and then return for your sprint to the finish line near event sponsor The Beachcomber Bar & Grill.

Fundraising Opportunity

Runners have the option of creating a fundraising campaign to help raise additional funds for the Marine Raider Foundation.  Campaign pages will be on the race site, and all funds are directly deposited to the Marine Raider Foundation from RunSignUp.com.  The Marine Raider Foundation will be awarding the top 3 fundraisers.

History of the Seaside Semper Five

The Seaside Semper Five originated in 2014 to benefit the Marine Raider Foundation, a 501c3 nonprofit that supports Marine Corps Forces Special Operations Command (MARSOC) Marines and Sailors, World War II Marine Raiders, and Marine Raider Families, including Marine Raiders who are wounded, ill and injured, and Marine Raider Families whose Marine or Sailor made the ultimate sacrifice while protecting our Nation.  Race Director Frank Costello, who has also been a member of the Marine Raider Foundation’s Marine Corps Marathon Charity Partner Team every year since 2013, wanted to use the race as his fundraising campaign to earn a slot for the marathon.  He reached out to family and friends in his close-knit community, and the Seaside Semper Five was born!

In the past six years, participants from all over the world (27 states and 4 US Embassies) have made the Seaside Semper Five one of the largest 5K/1M events in New Jersey, empowering the Marine Raider Foundation to provide our Nation’s heroes with support for needs unmet by the government and other agencies.  Since 2014, the event has raised over $275,000!  Sign up today and be a part of “Helping those who have sacrificed the most.”