We studied the movements of burbot Lota lota from October 1983 to December 1984 in the upper reaches of the Tanana River, a glacial tributary of the Yukon River in eastern Alaska. We surgically implanted radio transmitters into 21 burbot and monitored the fish by aerial telemetry once every 3 weeks. Fish were relocated up to 68 km downstream and 84 km upstream from release sites. The longest combined upstream and downstream movement observed for an individual fish was 125 km. Burbot were usually relocated in the main river channel, even during summer when peak flows caused high turbidity and channel scouring. Although burbot moved about during all seasons, their longest movements occurred during November–March, the normal period of spawning activity.