According to the latest information I have, these are the latest laws for wearing a helmet in the states we travel.
As the founder of "Ride for the Relay" I would ask that you wear a
helmet at all times to set a good example but it is your call.
Illinois-------------------------------------No Helmet Law
Missouri-----------------------------------All Riders must wear a Helmet
Kansas-------------------------------------17 & younger must wear a Helmet
Okla----------------------------------------17 & younger must wear a Helmet
Texas---------------------------------------20 & younger must wear a Helmet
New Mexico--------------------------------17 & younger must wear a Helmet
Arizona-------------------------------------17 & younger must wear a Helmet
California-----------------------------------All Riders must wear a Helmet