Just been looking back at crypto's bull run history and honestly, the pattern is pretty fascinating. People always ask how long does a crypto bull run last, and the answer's more consistent than you'd think.

Looking at the past decade, we've seen some solid cycles. That 2015-2016 run lasted about 17 months, taking BTC from $152 up to $780. Not huge gains by today's standards, but it set the template. Then 2017 came in hot - basically a year-long sprint from $1K to nearly $20K by December. That one felt like forever at the time.

But the real lesson came from 2020-2021. Starting from that COVID crash bottom around $3,850, we got a massive 20-month rally that pushed BTC all the way to $69K. That's the one everyone talks about - longest and most brutal bull run we've seen. Took forever but the gains were insane.

The 2023-2024 cycle was tighter though. Started around $16,500 after the FTX mess and ran for about 14 months until hitting $73,738. Shorter duration but still solid returns. So how long does a crypto bull run last typically? Looking at these patterns, you're usually looking at 12-20 months of parabolic growth.

Here's what's interesting about the current situation. The halving happened back in April 2024, and historically these bull runs kick off 6-12 months after a halving. We're now about 20 months post-halving, and BTC just hit a new ATH around $126K recently. That suggests we might be late-stage in this cycle, or potentially entering a new phase.

The pattern is pretty clear when you zoom out: market bottoms, then explosive growth for over a year, then the brutal bear market. Each cycle, how long does a crypto bull run last seems to average around 14-17 months. It's not exact - exchanges vary slightly on exact tops - but the duration of bull runs tends to cluster in that range.

What's worth watching now is whether we're repeating the pattern or if this cycle breaks the mold. Based on historical precedent, if we're heading toward another bear market, it could be coming sooner rather than later. But if this is just a mid-cycle consolidation, we might have more runway. Either way, understanding how long crypto bull runs typically last helps you prepare for what comes next.