Putting out a challenge; how do I spread the word?

[tirediron]

Thanks Tim, really useful advice. I know facebook has locked down a lot of the things that would have made this easier a few years ago. I think what this is going to wind up being is a 'shot-gun' approach. Social media, direct-mail contact, links to my 'site. I'll be building a page specifically for the challenge on my 'site, and I can get that links on 'sites like Wounded Warriors Canada, The Royal Canadian Legion, and a few others.