racecast.ioPartly cloudy throughout the day.
Wind
14mph
Wind
14mph
Details
Wind
14mph
Wind
15mph
Wind
15mph
Wind
15mph
Wind
14mph
Wind
14mph
Wind
14mph
Wind
14mph
Wind
15mph
Wind
15mph
Pre-Race
Race
Post-Race
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Race Overview
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.
WikipediaFAQ
When is the 2026 Seacoast Half Marathon?
The 2026 Seacoast Half Marathon will be held on Sunday October 25, 2026.
Seacoast Half Marathon Weather History
Seacoast Half Marathon Weather Averages
Average Temp: 48°, Average Low: 41°, Average High: 56°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM |
|---|---|---|---|---|---|---|---|
| Temp | 46° | 48° | 50° | 51° | 52° | 52° | 52° |
| Feel | 42° | 45° | 49° | 51° | 52° | 52° | 52° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 8mph | 6mph | 10mph | 8mph | 8mph | 8mph |
| Dew | 31° | 31° | 30° | 30° | 30° | 30° | 30° |
| RunScore |  | |  | | | | |
Seacoast Half Marathon 2025
Oct 26, 2025
Partly cloudy throughout the day.
Low: 41°, High: 55°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM |
|---|---|---|---|---|---|---|---|
| Temp | 47° | 48° | 52° | 53° | 55° | 53° | 54° |
| Feel | 43° | 44° | 52° | 53° | 55° | 53° | 54° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 8mph | 4mph | 14mph | 10mph | 9mph | 7mph |
| Dew | 37° | 35° | 34° | 33° | 33° | 32° | 33° |
| RunScore | | | | | | | |
Seacoast Half Marathon 2024
Oct 27, 2024
Partly cloudy throughout the day.
Low: 38°, High: 56°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM |
|---|---|---|---|---|---|---|---|
| Temp | 42° | 45° |  49° | 51° | 53° | 55° | 56° |
| Feel | 37° | 40° | 45° | 51° | 53° | 55° | 56° |
| Rain | - | - | - | - | - | - | - |
| Wind | 8mph | 11mph | 9mph | 13mph | 13mph | 11mph | 12mph |
| Dew | 21° | 20° | 19° | 18° | 17° | 17° | 18° |
| RunScore | | | | | | | |
Seacoast Half Marathon 2023
Oct 29, 2023
Cloudy skies throughout the day with rain.
Low: 45°, High: 57°, Moderate Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM | 3PM |
|---|---|---|---|---|---|---|---|
| Temp |  49° | 50° | 50° | 49° | 49° |  48° | 48° |
| Feel | 47° | 50° | 50° | 48° | 49° | 47° | 47° |
| Rain | - | - | - | - | light | light | - |
| Wind | 6mph | 5mph | 6mph | 5mph | 0mph | 3mph | 3mph |
| Dew | 36° | 37° | 36° | 39° | 41° | 41° | 38° |
| RunScore | | | | |  | | |