This is a pretty straightforward route that traverses a National Park (albeit a tiny one) and is a fun, very runnable 50k distance that has been done a number of times though doesn't seem to be popular. We didn't see a single person on the entirety of the Under the Rim Trail, which the park describes as unmaintained. There's certainly some blowdown in Agua Canyon (through an old burn) and a handful of washes to cross but they're easy to navigate.

The Chiemgautour is planned as a 4-day hiking-trip. It's 50 km, so it can be a one-day-trip. You are reaching four well known and beautiful peaks in the German Alps. It's the Kampenwand, Geigelstein, Spitzstein and Hochries. You will have a nice nature and beautiful views over the Chiemgau, the south of Bavaria and into the Alps. Most of the Tour is trail and path. There is no additional equipment needed, like ropes or crampons. Normal trailrunning or hiking-equipment will be enough.

This is a great backdoor entrance into the Joshua Tree National Park loved by backcountry hikers. It begins in the community of Indio Hills. You begin by ascending an alluvial fan by way of an old mining road weaving in and out of a mostly hardpan wash for approximately 5-6 miles and about 2000ft through desert brush until you reach the tighter funnel through steep canyon walls. Once into the myriad of fingers connecting to the ascending ridgelines, the steep climb begins up loose desert terrain as the views of the Coachella Valley and Salton Sea begin to reveal themselves below.