Harborside Half Marathon
Race Day Weather
Cool start — fast day potential, moderate wind
A cool 47°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Moderate winds around 16mph may affect pacing on open sections of the course. Moderate humidity at 69% is worth noting for effort level, especially in later miles.
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Race Info
The Harborside Half Marathon and 5K runs each November through Newburyport, Massachusetts, starting at Mark Richey Woodworking on Parker Street and finishing at Cashman Park on the Merrimack River. The half marathon route heads out through Newbury and West Newbury before returning along the Clipper City Rail Trail for its final 1.3 miles. The race has run annually since 2015, is USATF-certified, and sold out six weeks ahead of race day in 2025.
