St. Paddy’s 5K & 10K
Portsmouth, NH
10K, 5K
Key dates
Registration opens
Mar 18, 2026
Registration closes
Mar 14, 2027
Race day
Mar 14, 2027
Email me updates about Shamrock Shuffle
Registration openings and major changes, like a new date or a cancellation.
Entry transfers
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Listed from RunReg. Checked Nov 1, 2026.