yo-yo skiing
n.— «Last night, the bus driver asked us where we lived, which led to a lively conversation about skiing, his many ski visits to Snowmass (which he enjoyed), his condo at Snowbird in Utah and what he referred to as “yo-yo skiing” in Minnesota, where the hills are not very big and skiers have to go up and down constantly.» —“Conventional wisdom” by Frieda Wallison Aspen Times (Colorado) Sept. 2, 2008. (source: Double-Tongued Dictionary)