King Mountain (Arco/ Moore)

King Mountain, near Arco and Moore in Idaho's high desert, is a serious cross-country and thermal site that's strong and famously hard to predict — first-time visitors are advised to fly with a local instructor as a guide rather than figure it out alone. There are three separate launches at different altitudes: a lower launch and a spot called Coyote, both reachable by a high-clearance 2WD vehicle, and an upper launch that needs 4WD. Getting in has gotten harder in recent years — the old direct route between the landing zones and launch washed out and is no longer passable, so the drive now runs up through Arco and a chain of named passes on a dirt road that turns rough enough to need 4WD and real ground clearance, with over an hour between launch and landing. Expect the classic high-desert package: strong wind, a high cloud base, dust devils and weather that can turn fast, including thunderstorms. Multiple official landing zones sit around the valley, but in the evening pilots are told to avoid the base of the mountain entirely — except at those official LZs — and fly out into the open valley instead.

Launch & conditions

Three launches exist at different altitudes: a lower launch and a spot called Coyote, both reachable by high-clearance 2WD, and an upper launch that needs 4WD.

Getting there & local rules

The old direct route between the landing zones and launch has washed out. Access now runs up through Arco and a chain of named passes on dirt road that turns rough enough to need 4WD and real ground clearance — figure over an hour between launch and landing.

Local rules & hazards

This is a high-desert site: expect strong wind, a high cloud base, dust devils and weather that can turn quickly, including thunderstorms. In the evening, avoid landing near the base of the mountain except at the official landing zones — fly out into the open valley instead.

Check conditions before you fly

A forecast for the valley is not a forecast for the launch. Before heading to King Mountain (Arco/ Moore), read the wind and thermals for the site itself, confirm the day's rules with the local club, and remember the standing rule — when in doubt, don't launch. In the free OutDare app you can open King Mountain (Arco/ Moore) with a 7-day forecast built from high-resolution weather models, see who else has been flying, and get there with offline maps.