Schnebly Hill Road (Sedona, gravel)

The most spectacular gravel climb in Arizona and a legitimate case for best desert gravel ascent in the United States. Schnebly Hill Road climbs from the heart of Sedona (1,315m) up the face of the Mogollon Rim — the dramatic 600m escarpment that defines the Colorado Plateau edge above Sedona — on a red dirt and rock surface that demands 40mm+ tyres and meticulous tyre pressure selection. The gradient averages 5.9% over 10.8km but is wildly irregular: sections of 2-3% loose wash alternate with 12-14% rocky pitches on consolidated sandstone that rewards tyre placement and technical handling. The visual reward is extraordinary and grows with every 100m of altitude gain. Sedona's red rock formations — Cathedral Rock, Bell Rock, the Airport Mesa — are viewed from above as the climb progresses, with the Verde Valley and Jerome mining town visible across the valley to the west. The final 3km on the Coconino Plateau rim enter ponderosa pine forest that feels entirely divorced from the red rock desert below. The road transitions to sealed asphalt at the rim, connecting to the Interstate 17 corridor.