46 years, Australia
Looking up at Langtang Lirung from their isolated Base Camp, Adam Bielecki and Felix Berg came to two conclusions: First, their decision to turn back from the upper slopes earlier this week had been right. Snow had fallen non-stop since then. Second, the time left before the monsoon strikes has run short. Too short.
“The weather forecast is miserable,” said Bielecki. “Annapurna is also under constant snowfall, and our acclimatization is too weak to attempt a new and difficult route on an 8000’er.” So the pair has decided to call off the expedition, without even setting foot on Annapurna.