Cannonball Half Marathon
Race Day Weather
Comfortable temps, moderate wind, rain likely
Mild 52°F temps at gun time mean comfortable early miles without overheating risk. Moderate winds around 14mph may affect pacing on open sections of the course. Rain is likely — waterproof your phone and bib, and consider a disposable poncho for the corral. Moderate humidity at 80% 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 Cannonball Half 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 Cannonball Half 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 Cannonball Half Marathon runs 13.1 miles on the Saturday of race weekend, starting and finishing at Jaycee Park in Country Park in north Greensboro. Runners leave the park, follow Joan Avenue and Pisgah Church Road, and join the Atlantic & Yadkin Greenway, a paved rail trail. The course turns around at a cone on the greenway about 6.6 miles in and returns the same way to the park.