2021 - Seacoast Half Marathon
2021 distances
Running
Virtual Seacoast Half Marathon
Run or walk the virtual half marathon course of your choosing between October 23 and October 31. Post your time to RunSignUp when you have finished your race. With this option, you'll get a long-sleeve race shirt, and a half marathon finisher's medal.
Virtual Seacoast Quarter Marathon
Run or walk the virtual quarter marathon course of your choosing between October 23 and October 31. Post your time to RunSignUp when you have finished your race. With this option, you'll get a long-sleeve race shirt.
Virtual SHM 5K
Run or walk the virtual 5K course of your choosing between October 23 and October 31. Post your time to RunSignUp when you have finished your race. With this option, you'll get a long-sleeve race shirt.
Seacoast Combo (Virtual 5K, Quarter Marathon & Half Marathon)
Run or walk the virtual 5K, Quarter Marathon, AND Half Marathon between October 23 and October 31. Post your times on RunSignUp when you have finished each event. With this option, you'll get a long-sleeve race shirt, a Half Marathon finisher's medal.
Seacoast Half Marathon (in-person)
The "live" Seacoast Half Marathon will start and finish at Portsmouth High School, and travel through the beautiful coastal communities of Rye and New Castle, New Hampshire. You'll get a long-sleeve race shirt, and a half marathon finisher's medal.
Race-day weather
Conditions on October 23, 2021 — historical Open-Meteo data.
The sun rises at 7:06 AM and sets at 5:47 PM local time (EDT) in Portsmouth on October 23, 2021 — 10h 40m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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2021 results — Seacoast Half Marathon
412 finishers across 4 distances · leading places in the Virtual Seacoast Half Marathon
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | John Peterson | 1:37:45 | 7:28 /mi |
| 2 | Jacob French | 1:56:55 | 8:55 /mi |
| 3 | Sonya Theriault | 1:57:09 | 8:57 /mi |
| 4 | NAOMI CONNELLY | 2:03:06 | 9:24 /mi |
| 5 | Judith Trotzky | 2:10:22 | 9:57 /mi |
Every finisher is on the results page, filterable by distance, gender and age group.
Other races near Portsmouth
Different organizers, within 40 miles, in the next three months
Seacoast Half Marathon
Great Island 5K
2nd Annual New England Ostomy 5k
Dan Healy Memorial 5K
🏃 Plan Your Next Race in Portsmouth
Find upcoming events by distance:
- Portsmouth 5K Races 3 races
- Portsmouth Running Calendar 2026 6 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 6 Portsmouth events
Spotted something wrong? Tell us and we'll fix it.