Dozens of Santas have descended on RAF Leeming in their annual Santa Dash.
Similar events have been held at RAF stations across the country, all in aid of the RAF Association.
Squadron Leader Penelope Hartley Green, RAF Association Liaison Officer, said: “[It’s] very unique seeing... Santas of all different ranks and branches running around the airfield.
"It's great... we all come together for one united cause.
"The aim... is to raise awareness of RAFA."
The 5,000km route took the Santas right around the station, and there were a few embarrassing wardrobe malfunctions on the way.
Corporal Kyle Gorman confirmed: "I lost a minute of my time having to stop and do my pants up again."
Money raised will be split among different projects benefiting serving personnel, their families and veterans.
Santa runs also took place at RAF Scampton, Wittering, Cranwell, Benson, Boulmer, and even Mount Pleasant in the Falklands.
All Santas made it in safely, with first place going to Sergeant Stuart McClean, who is Tool Custodian for the base, and ultramarathon runner on the side.
Now, more importantly, he is also the fastest Santa on station.