M.L.
I am so very sorry, my heart just breaks for his family and their angel baby.
If I were you, I would call the SIDS foundation directly. A lot of people set up things like this for SIDS research in light of family tragedies, so the foundation can probably give some pointers, and they probably have guidelines in place that will make it easier.
There are several online sites and software for running walk-athons as well, I don't know if they would have info, but they might:
https://www.google.com/#hl=en&sclient=psy-ab&q=ho...