Odin's Revenge appears to be taking form for late June. According to the on Guitar Ted's blog post the event should be about 180 miles leaving from Gothenburg, NE. It's new, details are not final,
UPDATE - The website for this event is up and running, albeit in early development stages. Check out the photos of the course. This thing looks awesome! If I'm recovered from DK200, and there's room I hope to go. Looks like a fantastic route in any case.