The wing belonging to former Otago paraglider pilot James Kiwi Oroc has been found in Nevada, but there is no sign of Johnston.
The former Wanaka man has been missing for almost a month, since launching from a point near the town of Eureka on August 22.
An American paragliding website is reporting Oroc's Ozone Zeno wing was found tangled around bushes about 16km from his last known GPS point, in an area known as Nine Mile Canyon, south of Eureka.
The spot is about 200m off his predicted flightpath and close to a dirt track.