Gardner and North Gardner are just west of Winthrop, WA. You start at Wolf Creek Trailhead. It is a 10 mile run into Gardner Meadows which is at the base of Gardner. From here to the summit of Gardner there is no trail. From the top, descend to the west onto a ridge that takes you to a low point between Gardner and North Gardner. Upon reaching this point you traverse another ridge up to the summit of North Gardner.

Josh Nelson posted the route, with some clarification on the starting point:

This is one of my favorite peaks in Southern Oregon and provides a super accessible way to get above 9,000'.  This Cascade shield volcano tops out at 9,495' and is skirted by the PCT which allows for some really fun loops.

Running the 92-mile highway through Denali National Park.

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.