At least for the last three years, anything > 65mi I've picked the recumbent. Alta Alpina was a crazy amount of climbing to stay in one seated position for though. All the climbing is ~5-6% grade, which for me meant granny'ish gearing, spinning, and low speeds. Hour after hour after hour. The descents with the aero of the bike required judicious braking, and with very few flat miles in between, the net result was (I think) I was much slower than I would have been on a DF.

While I don't want to have any preconceived notions that DF's can climb better than recumbents, I'm going to ride my road bike up a nearby climb (Old La Honda in the SF Bay Area) later this week. I haven't been on that bike at all this year, instead my miles have been spent between two different recumbents that I have power data for the climb for. I've ridden ~50mi total since the end of October. I'm not going to be terribly surprised if I make it up OLH faster on the road bike than either of the previous rides up on the recumbent, even though I was in better shape for those rides than I will be for this one.