A 49-mile loop that visits 6 of Yosemite's High Sierra Camps. Starting from Tuolumne Lodge and going clockwise: Vogelsang, Merced Lake, Sunrise, May Lake, Glen Aulin and back to the Tuolumne Lodge trailhead. After Vogelsang, there are two options to take for a route to Merced Lake; I took the outermost path over Vogelsang Pass. 

Jason Hill asked about the route:

Christof Teuscher posted the route:

Mark O. Hatfield Memorial Trail in the Columbia River Gorge. More info about the trail can be found here:     

Christof Teuscher established the challenge of climbing Mt Adams, then continuing on foot to Mt St Helens, for a total of about 90 miles and 30,000' of elevation gain.

The Loowit Trail circumnavigates Mt St Helens.  The Loowit Trail is used for the course of the Volcanic 50K race, which has produced the fastest times.  We also track unsupported (non-race) times.  Max Ferguson gave a little detail from his unsupported run:

This is a 1680 ft mountain on the Oregon coast near Manzanita.  It climbs over 1100 ft in 2 miles.  It lies within the Northern Coastal Range mountains.  The trailhead sits across Hwy 101.  The trail has rocky sections, rooty sections, smooth sections and a few areas where you have to run through overgrown bushes. The last little section to the summit is basically all rock and requires some careful footing, though there's no real danger of falling off.