PAGftt DeVarona's whirlwind life by Bud TmmtmiI Attractive, bright and seem ingly tireless broadcaster Donna de Varona is on the road so much these days for NBC as one of the network's top sportscasters as well as co-host of their top-rated new sports/variety weekly series 'Games People Play,' (Thursdays) she admits to waking up some mornings not having the slightest idea where she is. "I don't really let it bother me though," chuckles Donna, an outstanding former Olympic swimmer who won two gold medals at the 1964 Summer Games. "I usually start my day with a jog wherever I am or a workout of some sort after which I can pretty much adapt to anything or any place." The still excellently-condit ioned and shapely Miss de Varona leans heavily on the philosophy of maintaining good health. "I can't imagine living any other way," she says, "no matter what business you're in. It's especially important though if you spend as much time on the road, in hotels, on planes keeping the crazy schedu les and hours we do . . . to say nothing of how it all throws any reasonable eating or sleeping routine out of whack. It takes some discipline to cope with the temptations to just let yourself go, but I'm convinced there is no alternative. You have to work at it." Discipline and exercise reg imen is nothing new to Donna who has been "working at it" since she was a toddler in Her hometown of San Diego, Calif, and Lafayette. California where she grew up. No doubt inspired to pursue athletics by the example set by her father Dave de Varona, a lineman for California in the 1939 Rose Bowl and an Olympics- calibre oarsman in 1940, Donna was just 13 years old and the youngest member of the U.S. Olympic Swim Team in Rome at the 1960 Olympics. Just four , years later, she returned to Olympic competition, this time in. Tokyo and came away with two gold medals. She was named outstanding female ath lete in the world by Associated Press and United Press Inter national. By the time she retired from active competition the following year, Donna had set 18 world swimming records. She was 17 years-old. Anybody might figure that Donna de Varona would start thinking about slowing down the pace a bit. Not yet. In addition to her sportscasting work and her weekly co-hosting on 'Games People Play;' she's active as a sports lobbyist in Washington, she's an accomplished writer with articles published in the New York Times, Redbook and Seventeen, she's working on her second book, is a co-founder with tennis star Billy Jean King of the soon-to-be launched Women's Hall of Fame for athletes and hopes someday to have her own .television sports show. Some retirement. ii' v * '