Since the orienteering community is not known for graphic design skills, I hope that this contest is posed to some segment of the graphic design community, maybe to an art & design school or something. (Another option would be to use
CrowdSpring, or something similar.)
It would be useful to know what the required elements are. From the current submissions, all of them say "NAOC 2012", two of them refer to the location, one of them refers to a more specific event name (is that the official event name?). None of them refer to specific dates. It would be a shame if the best graphic design wasn't chosen because it didn't show all of the desired information, or it was in a color scheme that the selection committee didn't like.
Also, from the
contest webpage, there a sentence that refers to DVOA's bid, but there's no link.