Joe Biden falls while getting off his bike after beach ride with wife Jill after getting his 'foot caught'

US President Joe Biden has fallen off his bike in Delaware as he celebrated his 45th wedding anniversary on a weekend away with wife Jill.

He fell when he tried to get off his bike at the end of a ride on Saturday at Cape Henlopen State Park near his beach home in the US state, but said he was not hurt.

"I'm good," he told reporters after US Secret Service Agents quickly helped him up.

"I got my foot caught in the toe cages."

The 79-year-old leader and first lady Jill Biden were finishing a morning ride when the president decided to pedal over to a crowd of well-wishers standing by the bike trail.

But he took a tumble when trying to dismount.

The president, who was wearing a helmet, quickly collected himself and spent several minutes chatting with people who had gathered to watch him cycle.

He and his wife have been spending a long weekend at their Rehoboth Beach home after they marked their 45th wedding anniversary on Friday.