An 18-kilometre ridge-top walk along Wellington's Outer Green Belt, running between Makara Saddle in Karori and Erlestoke Crescent in Churton Park, over Mount Kaukau, the Crow's Nest, Kilmister Tops and Johnston Hill. The council says it takes up to seven hours, but it can be walked in stages, with many entry and exit points. On a clear day the views reach the Kaikōura ranges, the Marlborough Sounds, Wellington city and harbour, and the Tararua and Orongorongo ranges. The council warns that the route is challenging and exposed, and that the weather can be extreme. It recommends reasonable fitness, warm clothing, sturdy footwear, lunch and plenty of water, since there are no toilets or water along the way. Follow the purple markers, and use the Welly Walks app for maps. Dogs must be on leads outside dog exercise areas.