this one is very similar, and i've done it the last 2 years:
here's the course map for it: http://epicrelays.com/wp-content/uploads/2012/06/2012-Epic-Rocky-Mountain-Relay-Course-Map.pdf
i think the Ragnar one will be bigger, they have a bigger profile in the relay world. it's also going to more familiar ski-towns. ours went up in these high mountain country roads that none of us had ever seen before, it was gorgeous.
these relays are pretty fun, and only a really small percentage of the teams are competitive. you'd fit in fine on a team if you just trained enough to be able to handle the mileage.
the 2 things that destroy me on this one are the altitude and the constant inclines. my team has been 11 mountain folk and me both years, and i had to ask for a set of legs that didn't have any long inclines, you get into oxygen debt so quick if you're not used to that.
running down Cottonwood Pass at 2am in the darkness with only a headlamp was tremendous.