On Jan 2, 2016, I was more successful: New Wilson River Traverse Yo-Yo FKT: 08:24’14
On Tue, Dec 29, 2015, Janessa Taylor and myself set out to attempt a new FKT on the Wilson River Traverse. As posted before, the route is 45.2mi with 7,900ft of elevation gain if you do it in a yo-yo fashion (out-and-back). The following OregonHikers page has a lot of useful info about the traverse: http://www.oregonhikers.org/field_guide/Wilson_River_Traverse_Hike. Note that there is also a great race on parts of the route: https://gobeyondracing.com/races/elk-kings-25k-50k.
Wilson River Traverse overview map.