Fat Man's Loop: Flagstaff's Favorite Easy Trail

Fat Man's Loop occupies a particular place in the Flagstaff hiking ecosystem: it's the trail that belongs to everyone. The NAU professor who walks it three mornings a week. The Phoenix family that arrives on Friday and needs a gentle way to breathe the mountain air before their knees are ready for anything steeper. The trail runner logging easy miles after a hard Tuesday. This 2.2-mile loop through the lower flanks of Mt. Elden is Flagstaff's neighborhood trail in the most literal sense — you can access it from near downtown without driving deep into the Coconino National Forest, and the parking is free.

The trail sits in a transitional ecological zone between downtown Flagstaff's edge and the higher ponderosa pine forests that cloak Mt. Elden's upper slopes. Down here, the vegetation is pinyon pine and one-seed juniper — shorter, more widely spaced, and more open than the dense ponderosa stands above. This openness means better views and more light, especially in the morning when the sun comes over the eastern rim and illuminates Mt. Elden's rocky upper face above the trail. Looking in the other direction, you get partial views down toward downtown Flagstaff and the railroad yards — a reminder of how close to the city you actually are.

How to Get There and Where to Park

The trailhead sits at the signed parking area at the intersection of Elden Lookout Road and US-89, on the north side of Flagstaff near the base of Mt. Elden. From downtown Flagstaff, drive north on US-89 (also called Townsend-Winona Road in this section) — the trailhead parking lot is visible from the highway on your right as you head toward the Navajo Nation. It's roughly a 5-minute drive from the town center. No parking fee. No parking permit. The lot is moderately sized and fills by mid-morning on summer weekends — aim for before 8am or arrive after 1pm when early starters are cycling out.

Note that this is the same access road for the Elden Lookout Trail, which climbs 2,385 feet to the summit fire tower. Fat Man's Loop branches off from the base area while the Lookout Trail heads steeply upward. The trailheads share the same parking lot, so you'll see serious summit hikers and casual walkers side by side at the start.

The Trail Itself

The standard direction is clockwise, and most people follow this convention — counterclockwise works equally well, but clockwise seems to be the local habit, possibly because the best morning views of Mt. Elden's rocky upper face come early in the clockwise loop. The trail is well-signed at the trailhead and at any significant junction. Stay on the main loop and you won't get lost.

The first half of the loop trends gradually upward along the lower flank of Mt. Elden, threading through the pinyon-juniper scrub. The ground is mostly rocky but not technical — no scrambling, no exposed ledges, no route-finding required. Some sections have loose gravel over rock, which means confident footwear (trail runners or hiking shoes) beats sandals, but you don't need heavy boots. The trail stays below the ponderosa pine zone, so the canopy overhead is the shorter, gnarled pinyon pine rather than the tall straight ponderosa that defines Flagstaff's higher trails.

The second half of the loop begins a gradual descent back toward the trailhead, with increasingly open views toward downtown and the railroad corridor. The eastern-facing sections of the trail get the morning sun full-on, which makes the 6:30–8:30am window the most photogenic — the light catches the granite and basalt of Mt. Elden's upper ridge and turns it amber and gold. Later in the day, the trail faces into afternoon sun; not uncomfortable in cooler months, but bring water and sunscreen for summer afternoon walks.

Wildlife and Birds

The pinyon-juniper zone at this elevation hosts a distinct bird community that differs from both the lower grasslands and the higher ponderosa forest. Acorn woodpeckers are the most theatrical — they cache acorns in what are called granary trees, drilling hundreds of individual holes in dead snags and stuffing each one with a single acorn. Find the right snag on the loop and you'll hear the raucous calling and see the distinctive white wing patches in flight. Western bluebirds use the scattered dead trees as perch-and-scan hunting posts, hovering briefly before dropping to the ground. Steller's jays, the deep-blue crested jays of the mountain West, are common and noisy throughout.

Look up toward the rocky faces of Mt. Elden above the trail for raptors. Prairie falcons nest on cliff faces in the region and are sometimes visible from the lower trail, either perched on a rock shelf or making fast direct flights between hunt perches. Mule deer browse the pinyon-juniper zone especially in early morning and late afternoon — common enough that seeing one is not unusual. Coyotes are active at dawn and dusk.

Who This Trail Is For

Fat Man's Loop was built for accessibility. If your group includes someone who isn't sure how their body handles altitude, this is the right first hike in Flagstaff — the grade is gentle enough that altitude-related shortness of breath won't be compounded by a steep climb. Children who can walk a few miles on a city sidewalk can handle this trail. Trail runners use it for active recovery days or as a quick morning loop before the workday. Dog walkers appreciate that the leash rule is consistently observed and the trail width is generous enough to pass other dogs without incident.

If you're visiting Flagstaff with altitude concerns, read our altitude and elevation guide before planning your first day's activities. Fat Man's Loop is one of our top recommendations for day-one hiking precisely because it's aerobically manageable for most people even before their bodies have adjusted to 6,909 feet.

Connecting Trails and What to Do After

The Elden Lookout Trail shares the same trailhead and is the obvious extension for hikers who want significantly more challenge. That trail climbs 2,385 feet over 3.3 miles to the historic fire lookout tower at the summit of Mt. Elden — a completely different experience that requires solid fitness and 3–4 hours round trip. Strong hikers sometimes combine a Fat Man's Loop warmup with the Lookout Trail ascent, though this makes for a long and demanding day.

Post-hike, the trail's proximity to downtown makes it easy to walk into the coffee shop scene on Leroux Street or Heritage Avenue. Macy's European Coffee House is a local institution with strong espresso and a vegan-friendly breakfast menu — the kind of place where the barista has a geology PhD and the tables are full of hikers by 8am.