Indeed, it was the "Reach the Beach" relay! I found the homepage for the event, and it can be accessed here:
http://www.rtbrelay.com/index.shtml
Rose - most of the links in the Citizen online this morning are not working

, which is what encouraged me to seek info elsewhere via Google. Thanks for the link to the other newspaper!
I checked out the route on the homepage, and discovered why the runners may have been more "high volume" when they were on my road. Certain areas were listed as Quiet Zone - my neighborhood was not one of them.
pmj - I'm glad some towns warned folks in advance! Would have been nice to see some warning signs on Rte 107 yesterday.