As for sunrise, one of the best I've seen while rogaining was on the overnight 12 hour last October when the sun emerged from a flat Murraylands horizon as a golden ball with a pink halo - almost like sunset apart from being in the east (and at the wrong time of day, and not over the ocean).
Not sure I'd enjoy -7 so much on a rogaine - you're not moving as fast and you're out for longer.
Just rogaine in WA then, I don't think thermometers go down that far...