Get ready for what many consider New Zealand's best one-day hike, the Tongariro Alpine Crossing. This challenging 19.4-kilometer (12-mile) journey will take you across a dramatic volcanic landscape, past steaming vents and ancient lava flows. You'll be rewarded with breathtaking views, including the stunning, vibrant Emerald Lakes. Be prepared for a full day's trek of about 7-8 hours; as it's a one-way route, you'll need to arrange a shuttle to get you to the start of the track. I would recommend to drive your car to the end of the track and book a one-way shuttle. This way, you don't have to wait until the next bus to go home after the track :)