At about 5:30 p.m. deputies responded to reports of a collision and learned that the bicyclist had been traveling north in the bicycle trail along Highway 1 when he was struck by a Honda while crossing Filbert Street, sheriff's spokeswoman Deputy Rebecca Rosenblatt said.
Deputies also found that the driver of the Honda fled the scene, according to Rosenblatt.
The bicyclist suffered serious injuries in the crash and was airlifted to an area hospital, where he died, Rosenblatt said. His identity has not yet been released.
The driver of the Honda, later identified as 23-year-old Bernabe Cervantes-Alvarado of Half Moon Bay, turned himself in to the Half Moon Bay sheriff's substation later that night.
Cervantes-Alvarado was arrested on suspicion of hit-and-run resulting in injuries, and booked into the San Mateo County jail. He remains in custody in lieu of $50,000 bail.
The crash is still under investigation and it's possible additional charges will be filed against Cervantes-Alvarado when the case is submitted to the San Mateo County District Attorney's Office, Rosenblatt said.
Anyone who may have information about the crash is asked to contact Deputy Hui or Deputy Cheechov at (650) 363-4911. Anonymous tips may be reported to the San Mateo County Sheriff's Office Anonymous Tip Line at (800) 547-2700.