Oatman Highway / Sitgreaves Pass Drive (Westbound)

The westbound drive begins at Oatman's Main Street, descending immediately as the road leaves town and begins crossing the lower slopes of the Black Mountains. The first 8-10 miles southwest of Oatman are the most dramatic — twisting, descending hairpin turns through the Black Mountains range, with grades up to 6-8 percent and no guardrails on the steeper sections. The road passes through several small canyon sections, crosses a number of small dry washes, and offers progressive views of the Colorado River valley and the surrounding Mojave Desert as the elevation drops.

The Goldroad ghost town ruins lie about 5 miles southwest of Oatman, on the right side of the highway. Goldroad was a separate gold-mining settlement that operated from the 1900s through the 1930s; it was abandoned earlier than Oatman and was never rebuilt after its mining decline. The ruins include several stone building foundations, a partially collapsed mine entrance area, and various scattered industrial artifacts. The site is on private land and active exploration is generally not permitted, but the ruins are visible directly from the highway and make for a photogenic Route 66 stop.

After the Goldroad area, the road continues its descent through the lower Black Mountains foothills, eventually leveling off as it approaches the Colorado River valley. The final 15-20 miles to Topock are flatter and less dramatic than the upper Black Mountains section but still scenic, running through Mojave Desert landscape with views of the river and the surrounding Sacramento and Chemehuevi Mountains. The road eventually meets I-40 at the Topock interchange, where the Colorado River forms the Arizona-California state line. Crossing into California, Route 66 continues toward Needles (10 more miles west) and eventually to the Pacific.

Sitgreaves Pass is the highest point on the Oatman Highway, technically east of Oatman rather than west — it's the eastbound crossing point on the Kingman-to-Oatman segment, at roughly 3,556 feet elevation. The pass is named for Captain Lorenzo Sitgreaves, who led an 1851 U.S. Army survey expedition through the region that produced the first detailed mapping of northwest Arizona. The pass crossing was the critical engineering challenge for the original 1926 Route 66 routing through the Black Mountains, and it remains the steepest section of the entire Oatman Highway.

Westbound from Oatman, drivers descend from Oatman's 2,700-foot elevation through several sets of switchbacks before reaching the Colorado River at roughly 460 feet — a 2,240-foot elevation drop over the 30-mile westbound drive. Eastbound drivers coming from Topock face the opposite — a 2,240-foot climb to Oatman, then the additional climb to Sitgreaves Pass east of Oatman, then the descent to Kingman at roughly 3,300 feet. Both directions of the drive involve sustained mountain grades that work brakes, transmissions, and cooling systems harder than typical American highway driving.

The pass's combination of historic significance, dramatic scenery, and challenging driving conditions make the Oatman Highway one of the most-cited bucket-list drives among serious Route 66 travelers. Many drivers do the full Kingman-Oatman-Topock route as a single day, treating it as a deliberate slow-paced experience rather than just a transportation segment. The companion Kingman-to-Oatman eastbound segment is covered separately; this entry focuses on the more dramatic westbound Oatman-to-Topock portion.

Daylight driving is strongly recommended. The road's combination of steep grades, hairpin turns, no guardrails, and limited shoulder width makes nighttime driving genuinely hazardous even for experienced mountain drivers. Most rental car insurance policies and many personal auto policies have specific exclusions or coverage limitations for unimproved or substandard-grade roads; check your policy before assuming standard coverage applies to the Oatman Highway.

RVs and trailers over 40 feet in total length are generally not advised — the hairpin turns in the upper Black Mountains section have radii too tight for longer vehicles, and the lack of guardrails plus steep dropoffs creates serious safety risk. Drivers with smaller RVs (Class B and short Class C, plus most travel trailers under 25 feet) generally handle the drive without issue but should plan for slower-than-normal speeds and should ensure brake systems and transmissions are in good condition.

Cell coverage is intermittent across the full 30-mile drive — most of the upper Black Mountains section has no cell service, and emergency response times are slow given the remoteness. Carry water (at least one gallon per person), a spare tire and the tools to change it, basic emergency supplies, and download offline maps before departing. Most modern vehicles handle the drive without difficulty given reasonable caution, but the combination of remoteness and challenging conditions means preparation matters more than on typical highway driving.

The Goldroad ruins, mentioned above, are the most photogenic intermediate stop on the westbound drive. The site is about 5 miles southwest of Oatman, on the right side of the highway, and is best viewed from one of the small unmarked pullouts where the highway widens slightly. Several stone building foundations, the partial remains of a mine entrance, and various scattered industrial debris are visible from the road. The site is on private land and visitors should not leave the highway pullouts to explore the ruins on foot — the area is technically off-limits and may include unstable mine workings.

Several scenic pullouts along the descent offer the best views of the Colorado River valley and the surrounding Mojave Desert. The most photographed pullout is roughly 10-12 miles southwest of Oatman, on the descent toward the river, where the road curves through a broad bend with sweeping views westward. Late afternoon (after about 3pm) is the best lighting for westward-facing photographs; morning is better for eastbound (returning) views toward the Black Mountains.

The Colorado River crossing at Topock is itself a historic Route 66 landmark — the original 1916 Old Trails Arch Bridge (a steel arch bridge that was a national engineering marvel when built) crossed the river just south of the current I-40 alignment. The Old Trails Bridge is no longer used for vehicle traffic but is visible from the I-40 crossing and is a worthwhile final stop on the Oatman Highway drive before continuing into California.

The classic Kingman-Oatman-Topock-Needles day trip is the standard full-Route-66 day in this area. Total distance is roughly 70 miles driving (28 Kingman-Oatman, 30 Oatman-Topock, 10 Topock-Needles, plus 2 miles for various stops), but the elapsed time runs 6-8 hours for the full experience including time in Oatman (3-4 hours) and various photography and exploration stops along the drive. Most drivers find the day genuinely satisfying — three to four hours of historic driving plus a substantive Oatman visit produces the kind of slow-paced Route 66 experience that's hard to find elsewhere on the modern Mother Road.

For visitors continuing west into California, the post-Topock route runs through Needles (a small Mojave Desert town that was a major Route 66 stop in the 1930s and 1940s), across the Mojave to Amboy, Twentynine Palms, and eventually to San Bernardino and the western terminus at Santa Monica. The Needles area itself has several worthwhile Route 66 stops and is the standard overnight option for travelers continuing west — see the California Route 66 coverage for the post-Needles experience.

For visitors not continuing into California, the standard return from Topock is east on I-40 back to Kingman (45 miles, roughly 45 minutes on interstate), which produces a circle route that allows direct comparison between the slow original 1926-1953 alignment (Oatman Highway westbound) and the modern 1953-onward bypass (I-40 eastbound). The contrast is genuinely educational and is one of the more memorable comparison drives on Route 66.