William Obea Moore, also known as The Great Elk, is a former American sprinter and holds the World Youth Best in this event.

Starting as an eight-year-old, running for the Los Angeles Jets youth club under coach James Robertson, Obea went on to set American youth records in the Bantam (9–10), the Midget (11–12), the Youth (13–14), and the Intermediate division (15–16)—some of which are still standing.

While Obea was at John Muir High School in Pasadena, California, his freshman year, his team won the CIF California State Meet 4×400 relay. In 1995, his sophomore year, Obea won the 400, beating future World Champion, Tyree Washington by a half a second. He was also second in the 200 and again anchored his team to winning the relay in remarkable come from behind fashion. Later in the season, he represented the United States at the 1995 Pan American Junior Athletics Championships in Santiago, Chile, where he set the still standing World Youth Best in the 400 meters at 45.14.

The following year Obea won both the 400, 200 and anchored the relay to the state meet record. At major relay events around the country, including the Penn Relays, Obea became a trackside legend as one of the best, a high school junior being clocked doing 45 second laps. He was Track and Field News “High School Athlete of the Year” in 1996.

With high expectations of having a chance to be the first high school athlete to qualify for the Olympics since Dwayne Evans and Lam Jones in 1976, Obea qualified for the 1996 U.S. Olympic Trials. Later in 1996, Obea won the World Junior Championships in Sydney, Australia.

Today, Obea is helps elite athletes and private clients to achieve their best fitness levels and achieve Mind, Body and Soul wellness.​