It's embarrassing to admit total ignorance of this project until earlier today, when a priest from Franciscan University of Steubenville delivered the homily at Mass on EWTN, and spoke about the "Crossroads Pro-Life Walk Across America." There are actually four separate walks: Northern, South/Central, Southern, and Canada, all meeting up in Washington, D.C., on August 11, 2012, for a Pro-Life Rally at the Capitol.
You can read all about this ministry by clicking on the link below:
http://www.crossroadswalk.org/Mission/Unfortunately it's not at all surprising that the media coverage of this great happening has been practically non-existent.