New Castle 10K
New Castle, NH
- 10K
- Road (Paved)
- Official race website
The locals will tell you that the “New Castle Loop” is almost a rite of passage to running on the Seacoast. Highlights of this race include stunning views of the Portsmouth Shipyard, the naval prison, the Piscataqua River, lobster boats, sailboats, the lighthouse, the Wentworth by the Sea Hotel and … MORE
Local Historical Weather (Apr 26):
| 2026 | 2025 | 2024 | 2023 | 2022 | |
| H (°F) | 60 | 65 | 54 | 50 | 57 |
| L (°F) | 37 | 50 | 30 | 40 | 43 |
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