Right. At my age there are precious few things to give up, so I am not.
I did a 134m Bungi a few years ago and a 12000 ft skydive 2 years ago.
I also rode a horse for the first time ever. 8 hours, through the (Chilean) desert on a horse with (no) the name of Gaucho.
I cannot do a full marathon, 1/2 marathon, 1/4 marathon or any fraction thereof.
So I am asking you to donate whatever you can to Smileawi.