Colorado
DifficultAlpine Loop — Cinnamon Pass to Engineer Pass via Animas Forks Ghost Town
Two 12,000-ft passes, one ghost town, zero guardrails.
Surface: Gravel
Australia
ExpertGibb River Road — El Questro to Mitchell Falls via Drysdale River and King Edward River Crossings
The Kimberley's deep north — earn Mitchell Falls.
Namibia
ModerateSossusvlei to Bullsport — Naukluft Desert Spine via Solitaire and Tsaris Pass
Empty Namib gravel between dunes and mountains.
China
ModerateSichuan–Tibet Highway — Kangding to Litang via the Tibetan Plateau High Spine (G318)
G318: where China ends and Tibet begins.
Australia
DifficultGibb River Road — El Questro to Home Valley via Pentecost River and Cockburn Range
Crocs, crossings, and Kimberley red rock.
Mpumalanga
EasyHighveld to Lowveld Escarpment — Abel Erasmus Pass to Blyde River Canyon via Graskop
Africa's green canyon on a knife-edge drop.
Australia
DifficultConrod Straight to Innamincka — Strzelecki Track Desert Crossing via Montecollina Bore
Burke and Wills didn't make it. You might.
Alaska
ModerateCondom Road — Hatcher Pass Road to Willow Creek Summit via Independence Mine
Gold mines and tundra summits above Anchorage.
Australia
DifficultGibb River Road — Wyndham to El Questro via Cambridge Gulf and Pentecost River Crossing
Crocs, tidal crossings, and the Kimberley raw.
Alaska
ModerateSeward Highway to Hope — Turnagain Arm Coastal Bench and Resurrection Pass Approach
Gold rush ghosts and bore tides on the Kenai backdoor.