Mt Taranaki is a popular mountain hike in New Zealand's Egmont National Park.  There are many FKTs on Taranaki, and even a website devoted to recording these:  https://taranakispeedrecords.wordpress.com/

Andy Hewat posted the route:

The Munda Biddi is a purpose built mountain bike trail currently stretching from Mundaring to Manjimup south of Perth in Western Australia. The trail is planned to continue all the way to Albany paralleling the famous Bibbulmun walking track. Current length is listed around 600km but that includes some redundant out-and-back sections into nearby trail towns. While a dedicated mtb track the Munda Biddi is also open to foot traffic.
 

The Hillary Trail, named after Sir Ed Hillary, for whom this was a special place, is 75km in length and features 3,300m of vertical ascent. It is mostly technical single-track running/walking through some stunning bush and coastal scenery.

Note that an 80km race is held annually on the Hillary Trail.  The race adds 5km to the route, and also skips one section of the actual Hillary Trail which is in a scientific reserve where events are not allowed:

The Great Ocean Walk is a walking trail located on Victoria's south-west coast in Australia, traversing several areas of historical and cultural significance.