Pi Day Half Marathon 2025. We've gathered 29 exciting races in the area. Crc mother's day half marathon & 5k sun, may 11 2025.

The pi slam will begin at 7:30 am and follow the course for the pi miler, and will begin again at. The pi slam will begin at 7:30 am and follow the course for the pi miler, and will begin again at 9:00 am with the pi day river rotation half marathoners, following the course for that race.