The Key Summit track is a relatively easy 8 kilometers or 5 miles return hike with 421 meters or 1381 feet of elevation gain. In fact, this is the start or end of the popular Routeburn Track, providing panoramic views of the surrounding valleys and mountain ranges from a broad, accessible summit. A well-maintained path with a gentle ascent through mossy rainforest leads to these stunning vistas, including a view of Lake Marian. It’s suitable for everyone.