How is that Theon Greyjoy and Sansa Stark survived the jump in the first episode of the sixth season (The Red Woman) of Game of Thrones? It was a big distance between the wall and land. How did that happen?
From the already published chapter of Winds of Winter:
"I saved her." The outer wall of Winterfell was eighty feet high, but beneath the spot where he had jumped the snows had piled up to a depth of more than forty. A cold white pillow. The girl had taken the worst of it. (...) Theon had landed on top of her, and broken some of her ribs. "I saved the girl," he said. "We flew."
We can assume that in the show they also landed on a large snowdrift, it just wasn't presented on screen.