Seacoast Half Marathon

In-Person: Oct. 30, 2022 Virtual: Oct. 22-30, 2022 Portsmouth, NH 03801 US

Seacoast Half Marathon (in-person)

$80 10/30 8:00AM EDT - 11:30AM EDT Registration ends October 25, 2022 at 3:30pm EDT

Virtual Seacoast Half Marathon

$40 Registration ends October 29, 2022 at 12:30pm EDT

Virtual Seacoast Quarter Marathon

$35 Registration ends October 29, 2022 at 12:30pm EDT

Virtual SHM 5K

$35 Registration ends October 29, 2022 at 12:30pm EDT

Seacoast Combo (Virtual 5K, Quarter Marathon & Half Marathon)

$60 Registration ends October 29, 2022 at 12:30pm EDT
Race Website

Additional race information can be found at


The Seacoast Half Marathon is one of the longest-running half marathons in coastal New Hampshire. This year, we are once again offering a suite of in-person and "virtual" options. The in-person half marathon will, as long as state and local officials permit it, be run on Sunday, October 30. With each virtual option, you decide where to run or walk, and when (between October 22 and October 30). We've made this decision because it is the best way we can give you options, based on your level of comfort being around a large group of other racers.  The virtual options include a 5K, a quarter marathon (6.55 miles) and/or the half marathon. All racers will be able to download a personalized race bib, and a finisher's certificate after you post your finishing time. In addition, you'll get a finisher's medal (half marathon). The Seacoast Marathon is unique in that ALL of the revenue (after race expenses) goes to local non-profit beneficiaries. This year's beneficiary is Portsmouth NH 400. So please make a donation to Portsmouth NH 400 when you register, and/or set up your own fundraising page to get family and friends help your fundraising efforts. You can use your donation/fundraising to earn free registration in the 2023 Seacoast Half Marathon!

The SHM “Run Through History “ supports Portsmouth’s yearlong celebration of 4 centuries of history, Portsmouth NH 400th. Subscribe to the Portsmouth NH 400 newsletter and learn more about events and how you can participate. Visit to sign up for email alerts!

Race Contact Info

If you have any questions about this race, click the button below.

Seacoast Visionary Sponsor
Seacoast History Sponsor
Seacoast Finish Line Sponsor
Adopt-A-Mile Sponsor
Shoaler Sponsor
Friend of the Seacoast
  • Where will the race start and finish?

The Seacoast Half Marathon will start and finish at Portsmouth High School, Portsmouth, NH.

  • What time is pick-up on race day, and when does the race start?

Packet pick-up will open at 7:00 on Sunday, Oct. 30. Walkers will start at 8:00, and runners will start at 8:30. If staggered starts are required, start times will be adjusted appropriately, and all racers will be notified of the change.


   • Where should you race?

Anywhere you want, as long as you are following local laws, and current state and local coronavirus guidelines. You can be on local roads, trails, or even a treadmill. In these virtual races, you can even take your pet along. Keep in mind, if you are on the roads, that there won't be any course marshals, traffic control, or water stops (unless you create your own water stop), so be vigilant and be safe.

   • When should I run/walk my race?

You can race anytime from October 22 until the end of the day on October 30. Pick the time and weather conditions that work best for you.

   • How do I download my race bib?

Log into your RunSignUp user profile, created when you registered, at www.runsignup/profile Once signed in, click on "View Pre-Race Bib" located at the end of the list of actions on the right side of the page. Click "Print" to download and wear your bib. As long as you are there, use the social sharing tools to promote your participation to your family and friends!

   • How can I get my race shirt?

Race shirts will be available for pick-up at Runners Alley in Portsmouth, NH on Saturday, Oct. 29, and at race sign-in on race day, Oct. 30. If you registered for the Half Marathon, you will also receive a finishers medal. If you are doing a virtual race, you can also choose to pick up your shirt at two other Runners Alley locations, or we can mail it to you for a $10 shipping/handling charge. Please note that shirts are guaranteed for the first 800 registrants.

   • How do I submit my time?

Scroll to the top of this page and click "Results" in the top navigation. Follow the prompts to log back into your user profile and click the blue "Submit Virtual Results" button.

   • Is this a charity race?

Yes it is! 100% of the proceeds go to Portsmouth NH 400, our non-profit beneficiary for 2022. You can learn more about Portsmouth NH 400 at

If you have created a fundraiser page, please remember that the deadline for donations is October 30 at 11:59PM. Thank you for supporting Portsmouth NH 400!

   • Who can I contact if I have more questions?

Send an email to  We'll get back to you as quickly as we can.


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