Most event rides are "fun rides" particularly if different options (say 25, 50, 75 and 100 miles) are offered. Doesn't mean some folks won't race it but also means you and your friends can just go out and enjoy the event, party through the sag stops etc.

Races are generally called that and usually require some sort of classification and CAT license.

As for Club rides, look for clubs that offer "social" or "recreational" rides. A lot of clubs are now offering "newbies" or "introduction" rides to non-members.