A young racehorse trained near Chateau de Chantilly escaped her handler and bolted for the nearest sports betting bar, sending panicked customers scampering for safety.

According to newspaper Ouest-France, trainer Jean-Marie Beguignem said he lost control of the horse as he led her from a stable to the racecourse, located about 50km to the north of Paris.

He said the horse had a penchant for running away.

"There was quite a panic. I still can’t quite believe it happened," bar owner Stephane Jasmin told Reuters.

The horse ran from one end of the bar to the other before turning around and charging back through, still bucking its legs and crashing into tables and chairs.