Ran up the south Skyline trail from the Pineview trailhead until the snow got too deep. roughly 4 miles up. This is a great trail for doing hill repeats. The first three miles are uphill and at a fairly constant grade. Did a run 2minutes, walk 2 minutes for those three miles up and blasted the entire way back down. I'm feeling the after effects this morning. Finished up with a easy run along the Pineview shoreline trail to the north arm trailhead and back. Icky trail, didn't like it at all.