Eric Lee established this 100+ km route:
A full circumnavigation of the Yosemite Valley rim on foot. Starting from Bridal Veil parking lot the route climbs to the valley rim trails, follows the trail system over Clouds Rest all the way to Tenaya Lake, before returning along the North rim over El Capitan and down the Old Big Oak Flat Rd back to the valley floor and the starting point.
More details in Eric's TR: http://ericjlee.com/Blogs/?p=739
This is a fantastic route and should be as popular as rim to rim to rim. But I've heard that the last few winters (and the rim fire) have been very hard on the Old Big Oak Flat road trail at the end of the route.
When I ran it with a friend on June 29 2019 we elected to descend the Yosemite falls trail and skip going to the top of El Capitan. When we did it there was a lot of snow from clouds rest to Olmstead point, and many downed trees from Olmstead to Yosemite falls. Our route was 60 miles long and took us 19 hours with many breaks to take in the view. Highly recommended!