The Holiday Valley Mudslide is a mudrun that’s really, really FUN! You can choose either a short or long course with the start at Spruce Lake at the top of the mountain. The 3.5 mile course runs along the ridgeline then down the hill over 14 obstacles. The 5.4 mile course with 19 obstacles adds quite a bit of uphill running, just in case you're feeling especially tough. Be prepared to run and get very muddy!