This weekend Group Captain Neil 'Jonah' Jones runs the British 10K in London, to raise money for the RAF Benevolent Fund.
Jonah, of Joint Forces Headquarters in Middlesex, is no stranger to running events, having already completed the Oxford Town and Gown earlier this year in aid of the Fund. And he's looking to go even faster than the 59 minutes it took him to run that race.
Originally from Port Talbot in Wales, Jonah has chosen to run for the Fund, a charity close to his heart: "I really wanted to give something back to the Fund and the RAF family," he explains.
"The Fund is a massive pillar of support to everyone in the RAF, and it's like a huge charitable comfort blanket knowing they are there for me, my family and my colleagues, whenever we might need them."
Jonah also plays a key role in RAF Football, which we're also proud to support: "When I first joined the RAF I had no idea what the Fund did, but now I appreciate the full scope of what they do, and it's incredible. They give so much to serving personnel, as well as veterans, and I wanted to raise awareness of that."
Paul Hewson, Regional Director for the RAF Benevolent Fund: "Jonah is really going the extra mile for us with his challenge! He claims he's no keen runner, but to take on something of this magnitude really is something special. The RAF Benevolent is very grateful for his support, and I hope he smashes his personal best."
The iconic British 10K takes in all of the attractions of London, from Piccadilly to Whitehall, with a route that races past Regent Street, Trafalgar Square, the Embankment, Westminster Bridge and Westminster Abbey.
Jonah hopes to raise £500. If you'd like to help him reach his target, you can donate via his online fundraising page.