Lovely hike on a track through trees up the mountain with the sight and sound of waterfalls along the way. We had a small group of 4, luckily, and walked just over 16 km in around 5.5 hrs total trip. The walk was a steady rise with a few minor steep bits but nothing major. It was a there and back trek with a picnic halfway. The weather was kind and the scenery beautiful with some lovely waterfalls containing crystal clear water, stunning. Our guide, Jono, was extremely knowledgeable, not just about the route but also Māori cultural in general. He was good at checking in on how we were feeling, conscious of the return walk, giving options for us to choose on distance and highlighting time between toilets. Jono was a definite bonus.
This is not a walk for young children however there is the longer possibilities for those wanting to trek further. Routeburn Track provides different levels of challenge, you choose what you want. A great day out.