If you know, ultrarunning, then you have heard of the HURT100. A race that takes place on the island of Oahu in Hawaii that consists of five, 20-mile loops, each loop containing a couple out-and-backs. Each loop have approximately 5000 feet of elevation gain. in the mountainous jungle in Honolulu. It is known to have technical terrain consisting of a lot of roots and rocks making it difficult to run. Easily the most iconic route on the island of Oahu.
 

This route traverses from the highest point in the Muddy mountains, to muddy mountain peak, and back to the trailhead. This route connects two of the most significant portions of the Muddy mountains, that sit directly east of Las Vegas. This route would be best to complete in colder temperatures, to avoid the scorching sun in the summer. 

Embark on the Anniversary Narrows and Anniversary Peak Hiking Loop in Nevada, a trail that combines diverse landscapes and challenging terrain. Start at the trailhead, surrounded by Nevada's rugged terrain. The route takes you through Anniversary Narrows, a slot canyon with towering rock walls. The trail then leads to Anniversary Peak, a summit offering panoramic views. The descent covers alpine meadows and pine forests, providing a varied Trail running and hiking experience.