Organising the action

So with my idea in mind and now public (so I have to do it!) I set about organising a few things to put in place.

I approached Fin from the local business Elite Gym Hire about getting their support by giving me a free treadmill for 24 hours!  He was very keen and happy to help out.  He just had to check with the suppliers/manufacturers.

"I was chatting to our supplier and it turns out that the treadmills have a governing device to prevent them overheating that would cut in after a few hours.  
 
Same deal with the commercial ones at the gyms. 
 
I'd recommend using the treadies at (name) and booking out 3 units and walking for 1 hour on each, giving the unit 2 hours to cool down before reusing. 
 
Sorry we couldn't help you but it appears treadmills just aren't designed 
for 24 use without cooling down."

I did have to laugh.  Never mind the treadmill overheating, what about me!? Haha.  I'm pretty sure I've got one of those governing devices too!

Onto plan B at Fin's suggestion...