The Appalachian Trail runs 2,181 miles from Springer Mountain, Ga., to Mount Katahdin, Maine. It takes its runners (as well as hikers and bikers) through the incredible flora and fauna of places like the Shenandoah National Park in Virginia and the Hundred-Mile Wilderness in Maine. It’s become a bucket list destination for ultra runners. Currently, the fastest-known time for running the Appalachian Trail is held by Andrew Thompson, who ran the entire length in 47 days. Want to run it in five minutes? Here’s a time-lapse video taken by hiker Kevin Gallagher, who retraced ultra runner Karl Meltzer’s 2008 54-day run.