"The Toronto Challenge for 5Km of Fitness" put the focus on fitness. The distance isn't extreme, and the organizers explicitly invite people to enter as walkers rather than as runners if they so choose. My DeHaan Fitness... site hosts this article.
On the other hand, "A Novel Route for the 2012 Toronto Challenge" presents this as an annual Toronto event in the summer. That approach is right up DeHaan Services' alley.
Publicizing these Toronto Challenge Articles
One Toronto Challenge Writing Tip
Unless your idea cup overflows, consider every new concept from different angles. Can you do one unit of research to generate several articles? Is there so much material that it deserves to be a series?
For example, my recent Decoded Science series on Turing machines reflected the fact that there is a lot to say about that concept. Yet the ideas need to be presented in a logical sequence, so they should be in a series at one site.
Conversely, the Toronto Challenge presented several different, but simple, angles. One article looks at fitness, especially at a novice level. The other highlights an event, with a special note for the new route. They easily fit into different blogs. As well, they link to each other, thus providing extra publicity.
So when you start your next article, take a moment to ask whether you're up for the "challenge" of creating several uniquely different stories from one basic idea, much as I did with the Toronto Challenge.