You need to push hard into the wind, [using] a big gear, for at least six minutes and no longer than 45 minutes [once or twice a week] to get the aerobic benefits of climbing big hills.
Cyclist and flatlander Christian Vande Velde, who trains outside Chicago, speaking to how it's possible to simulate altitude in this godforsaken terrain in today's New York Times.
Okay. I'll give it a try. (Doesn't mean I won't still long for my daily ride up Sunshine Canyon, just outside Boulder.)
And I'm guessing the descent won't be as much fun.