A couple and their child dressed as Santa Claus participate in the Santa Run, in Athens, Greece, on Dec. 15, 2019. Hundreds of people dressed as Santa Claus participated in the 6th Santa Run event on Sunday, running a distance of 3 kilometers. The event aimed to support children welfare. (Xinhua/Marios Lolos)

People dressed as Santa Claus participate in the Santa Run, in Athens, Greece, on Dec. 15, 2019. Hundreds of people dressed as Santa Claus participated in the 6th Santa Run event on Sunday, running a distance of 3 kilometers. The event aimed to support children welfare. (Xinhua/Marios Lolos)

People dressed as Santa Claus participate in the Santa Run, in Athens, Greece, on Dec. 15, 2019. Hundreds of people dressed as Santa Claus participated in the 6th Santa Run event on Sunday, running a distance of 3 kilometers. The event aimed to support children welfare. (Xinhua/Marios Lolos)

People dressed as Santa Claus participate in the Santa Run, in Athens, Greece, on Dec. 15, 2019. Hundreds of people dressed as Santa Claus participated in the 6th Santa Run event on Sunday, running a distance of 3 kilometers. The event aimed to support children welfare. (Xinhua/Marios Lolos)

People dressed as Santa Claus participate in the Santa Run, in Athens, Greece, on Dec. 15, 2019. Hundreds of people dressed as Santa Claus participated in the 6th Santa Run event on Sunday, running a distance of 3 kilometers. The event aimed to support children welfare. (Xinhua/Marios Lolos)

People dressed as Santa Claus participate in the Santa Run, in Athens, Greece, on Dec. 15, 2019. Hundreds of people dressed as Santa Claus participated in the 6th Santa Run event on Sunday, running a distance of 3 kilometers. The event aimed to support children welfare. (Xinhua/Marios Lolos)