There are people who read significantly more than 50 books a year and that's nuts to me. Even hitting 60 would require a lot more effort and slight discomfort than I'm willing to go for.
That said, it's incredible that I've already got a to-read list longer than I could possibly read in my life.
- Audiobooks at 2-3x speed. I listen while doing chores, while walking my baby in a stroller, while eating (not socially), going to bed, driving, etc.
- Ebooks, with a text-to-speech reader (I use @Voice aloud on Android). It takes more work to get used to, but I find that I can listen at a faster speed (3-4x) due to the clarity and regularity of the sound. Whereas (for fiction) an audiobook is a performance by a professional actor, this method is much closer to reading a physical book – after a while the voice of the machine fades and your own brain adds the richness of voice and tone (like you do with a physical book).
For both options, it takes practice to reach the levels I'm at. I think it's worth doing so, as it's a skill which pays large dividends over time. I should also note that more than 50% of these "100+" books are heavy-plot fiction. I slow down the playback speed for non-fiction I need to think about more carefully, or types of fiction where the quality and subtly of the prose is a major feature.