One of the best day hikes we've ever done! It is known for its stunning volcanic landscapes and challenging terrain. You should really try to time this one up with the weather as it can be dangerous during adverse weather conditions! The climb is very steep and especially near Red Crater, the terrain is difficult and can get slippery.
Note: this is a one-way hike and you need to book a shuttle to get to the trailhead (and then hike back to the parking lot). Park on the side of SH46, then go to the bus parked at the entrance to the Ketetahi car park to check in. The bus will take you to Mangatepopo, the start of the Tongariro Alpine Hike. The bus driver will provide weather information, a map, and an information sheet before sending you on your journey.
Trail link: https://www.alltrails.com/trail/new-zealand/manawatu-wanganui/tongariro-alpine-crossing
Distance: 20 km (12.4 mi)
Elevation: 853 m (2,798 ft) - elevation loss is higher!
Difficulty: hard