Days after the U.S. won its first Olympic gold medal in BMX racing, a beloved track in Orange County faces the end of the line.

DEAR ABBY: My 15-year-old grandson races BMX bicycles. Last year, he had a traumatic brain injury and had to be medevaced to a pediatric hospital. Once he recovered, he went right back to racing.

A BMX Olympic champion has described winning her third world title as "pretty crazy". Great Britain's Beth Shriever, 26, ...