QiaoQiao Wu, 70, and her husband, Decang Wu, 73, were last seen near Harvey Community Park in the Lakes and Birds neighborhood close to the city border with Union City around 2:30 p.m., police said.
The couple usually goes on a 30-minute walk before going back home, but their relatives notified law enforcement authorities around 5:30 p.m. when they didn't hear back from them, police said.
Shortly after 9:30 p.m. Friday night the couple was located safely in Hayward.