What an incredible idea for an event! But just out of curiosity, has this been publicized at all? I live in SD, and I regularly tune in to local media (especially NPR/KPBS), and yet, reading it here on HN is the first time I've heard about Walk for Salk...
Anyway, it sounds like a great event, and I hope to come and bring the family!
There was an employee "contest" to e-mail people and let them know, but we're (sadly) pretty insular out here. Make sure to sign up ahead of time to walk or take a lab tour (http://www.salk.edu/stepintodiscovery/exploresalk.php), and please tell your scientifically inclined friends :-) .
Anyway, it sounds like a great event, and I hope to come and bring the family!