31/03/2026
52.4 miles. One week. No excuses. 🏃♂️
Meet the team behind MANTIS: Jon Arnold
Most people train for one marathon, Jon decided to run two. The TCS London Marathon and Belfast City Marathon, just seven days apart.
Jon says:
"It sounded like a great idea at the time… now the training runs are getting longer, I’m starting to question my life choices!"
So why is Jon putting himself through this?
Because some challenges are bigger than comfort. After completing a charity skydive last year, Jon is pushing even further, combining personal challenge with real impact.
This time, he’s raising funds for Friends of St Francis 💚, a school charity close to home.
"Seeing the impact on the children and the school makes every mile worth it."
Balancing training with work and family life, hasn’t been easy, but the support has been huge. Between early mornings, long runs, and chasing after two young boys, Jon is pushing both physically and mentally, especially through the winter months.
From friends and family to colleagues and local businesses, including a £1000 donation from Walter Watson Ltd, the momentum behind the challenge keeps building.
Now it comes down to this:
Run 26.2 miles. 🏃♂️
Recover.
Do it all again. 💪
At MANTIS, we talk about pushing limits. Jon’s out there proving what that really looks like.
Support Jon's challenge: https://www.justgiving.com/page/jon-arnold-3
Help Jon Arnold raise money to support Friends of St Francis' Primary School, Drumaroad