Where do you live now that you've graduated? I live in Bozeman, Montana, and most of my trail running experience is in the mountains surrounding the Gallatin Valley. I have done a bit down in the Bighorns on the WY/MT border and some around Spearfish, SD. I ran one of my favorite trails this morning: Sourdough Canyon Trail south of Bozeman, in the Hyalite Range.
This trail follows Bozeman Creek down from Mystic Lake to the valley floor. It's a terrific 8-mile run one-way up to the lake.