The Presi Traverse southbound is a Premier Route. To claim an FKT on this route, you must meet a high standard of documentation and verification. See details here: https://fastestknowntime.com/premier-routes.

The Pemigewasset Loop is a rugged 30-mile route in the White Mountains of New Hampshire. It has become a popular backpacking route, as well as a tough 1-day challenge. This page has detailed information about the route.  Here we record FKTs for the loop in either direction, plus for the Double Pemi, as well as for the so-called "Super Pemi", or "Super Extended Pemi", which adds on North Twin, Hale, and Zealand (or the reverse) to create a larger loop of around 43 miles with about 15,000' of climbing.