The accident happened around 3:30 a.m. before South Fremont Boulevard and all lanes were reopened around 6:45 a.m.
The CHP says a male victim was struck multiple times.
The original vehicle who hit the victim did not stop, according to authorities.
Anybody who may have witnessed this accident is asked to call Hayward CHP at (510) 489-1500.
Check drive times and traffic maps.