Because Skyline Velo Cycling Club is a club for riders 18 and under, a parent or legal guardian has to sign the waiver on a rider's behalf before they join any club ride — this isn't optional, and it's separate from anything about cost. It's what keeps everyone covered and everyone honest about the real risks of group riding on open roads.
A release for ordinary risks of group cycling (traffic, road conditions, other riders, falls) — it does not, and cannot, cover reckless or grossly negligent conduct by a ride leader. If something like that ever happens, this waiver isn't what protects the club.
A parent or legal guardian, on behalf of any rider under 18. Riders can't sign for themselves under California law.
The actual waiver form is still being finalized — this page will link directly to it once it's ready and has been reviewed by a parent/guardian (and ideally an actual lawyer, given real stakes are involved). Check back before your first ride.