Don't bother to donate anything.  I'll probably fail.  So if you did, I would feel terribly bad about it.

If you really want to, then I would prefer if you pay by results.  This is going to be pretty tricky for me.  Despite lots of fancy surgery, I'm still pretty incapable of running without pain, and generally broken.  Actually it hurts most of the time, even when I don't run. Actually, it hurts more when I stop. That's endorphins for you. I can't remember the last time things didn't hurt. But you're probably the same, so I shouldn't moan.

After carefully logging everything, then analysing it, I realised that I break badly if I run more than 9 times in a month.  Regardless of distance.  Or intensity. Currently, I am managing to run about once per week.  But it isn't pretty. Or clever.

So this is more of a technical challenge, than a fitness challenge.  I think if I can run really really really slowly, then I might just be able to do it. And if I do do it, then maybe, just maybe, I might have toughened up enough to do some more.  But I doubt it.

So my plan is to start off the first week at around 5:30-6:00/km.  Or about 28 mins for the 5K.  Then try to do a Park Run each weekend at a slightly faster pace. Then I want to negative split the month, so that each week has a faster 5k in it than the last, and so that the average pace is also increasing.  Something like 28 mins, 26 mins, 24 mins, 22 mins would do for the fastest, and something like 28, 27, 26, 25 for the average. As the challenge ends on the Friday, I may have to carry it forward, for a no holds barred attempt at a season's best run at the Park Run on 1st June. That's a long way off yet, and I will soon come to realise what folly entertaining such ideas is.

I'll also have to get up at stupid times as the working day often runs from 6ish to 9ish.  Which is a bit inconvenient.  At least the days are longer now.

OK, so I was going to donate to myself on the basis of the number of runs managed, then bonuses for time goals reached.  

I'm not expecting you to donate, and I'm definitely not going to ask you to.  But I'm can't really stop you if you insist, can I?