New This Year: Chip Timing! Now you can get fast, accurate results. Day-Of Registration: 7:30am 5K Race Start: 8:30am 10K Race Start: 8:40am Run or walk along the Bay Trail and enjoy breathtaking views of the San Francisco Bay-Estuary.         Participate in a 5K or 10K. Proceeds from this event help to maintain and enhance the educational programs, exhibits, and facilities of the Hayward Shoreline Interpretive Center.