Officers found Max Durney of Petaluma down in the roadway on Ely Road north of Corona Road at around 8:37 p.m., according to the CHP.
"Durney was struck by an unknown vehicle traveling northbound on Ely Rd. As a result of the collision, Durney suffered major but non-life-threatening injuries," said the CHP in a statement.
Prior to being taken to Santa Rosa Memorial Hospital, the victim was able to identify the vehicle as a possibly Audi SUV.
According to the CHP, officers found "several vehicle parts along the right shoulder including a grey side-view mirror as well as a piece of the grille."
Investigators say evidence shows the vehicle may be a late model Audi Q5 or similar.
Any possible witnesses or anyone with information regarding this crash are asked to call the Santa Rosa CHP office at (707)588-1400.