Shamrock 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 15mph may affect pacing on open sections of the course. Moderate humidity at 72% is worth noting for effort level, especially in later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Shamrock Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Shamrock Marathon race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
Race Info
The Shamrock Marathon is held every March in Virginia Beach, Virginia, as the flagship distance of a weekend that also includes a half marathon, 8K, and shorter races. The marathon starts near 42nd Street and Atlantic Avenue, runs along Shore Drive past First Landing State Park, and finishes on the Virginia Beach Boardwalk near the King Neptune statue. The course is USATF-certified (VA22041RT) and serves as a Boston Marathon qualifier. Source
