For the most part, the Fatman’s Loop is an easy walk, although it does have a few short steep sections. Scenic overlooks of Flagstaff, the city’s eastern suburbs, and the surrounding countryside make this a good place for a stroll when you have time to stop and enjoy the view. Along the route, there are a number of interesting rock formations that bear witness to Mt. Elden’s volcanic origins. One of these is a bit of a tight squeeze, hence the trail’s name.

The area through which this trail leads supports a diverse community of plant species including upland trees such as white fir and ponderosa pine. Shrubs and smaller trees more usually associated with lower altitudes are also present. Among these are cliff rose, alligator juniper, and broadleaf yucca. Wildlife you may encounter on this trail includes Abert’s squirrels, pygmy nuthatches, mule deer, and gray foxes along with more commonly encountered animals such as Steller’s jays and ravens.

This trail provides access to the Elden Lookout Trail which continues two miles and 2,000 feet to the summit of Mt. Elden.

Fatman's Loop trail takes you on a climb over a historic lava flow to great views of Flagstaff and points south. The route travels past ancient alligator junipers that lean over the trail. Some of the junipers may be over 900 years old! Towards the top hill, the trail passes over a 500,000-year-old lava flow that has cooled into the interesting boulders and blocks along the trail. These boulders are a great spot for kids to scramble and explore! The trail is shaded at lower elevations by tall pines but has little shade towards the top.