Chip Collins posted the route:
Hells Canyon Rim to Rim to Rim, from Windy Saddle Campground (Idaho) down to the Snake River (swim across) climb up (on the Oregon side) to Hat Point, OR.
I have been able to find one account of this crossing by Mike James and Steve Graepel. Their write-up gives some details as 42 miles and 18,000 feet of gain. Their time was approx. 36 hours. They missed the river crossing (a swim) and had to stay the night out on the trail. there write up can be found here: trailrunnermag.com/people/740-go-to-hells-canyon