I ran it in 2013. Some of the trails are well established or are forest roads, while some you're just following ribbons out through the woods. If I remember the spring of '13 was slightly late and there was a pretty good snow pack in that area. The south facing trails were quite nice, just a little wet in places. On the north slopes there were areas of snow. Because the temps were warm it was fairly slippery. There is one pretty hard climb about 8-10 miles in, that is on the north side of the mountain. There was a lot of snow there and spikes would have been nice, but not neccessary.  The last downhill was on nice double track. Don't get complacent, there are a fair number of small roots sticking up. I badly rolled a ankle because I was not paying attention. (I was wearing Brooks Cascadias not my Hokas)   About 3/4 of a mile from the end you will go under I-80. The culvert will be full of water. Very, very, very cold water.  Be prepared to freeze your feet. The good part is it's not far to the end.

Overall it's a pretty good race and I would do it again but it normally falls on my weekend to work and It's not important enough to me to use a day of PTO.