Bitcoin climbed as high as $87,158 on last week, up more than 25% since the latest bull cycle began on August 20, 2026. Historical data shows that Bitcoin bull cycles have lasted 169 days on average when excluding one unusually long cycle, with BTC gaining +130.5% from start to peak on average. This is Bitcoin's 11th bull market since 2014. Bitcoin closed above its 200-day moving average on August 20, bringing the 2025–2026 bear market to an end after 290 days. Using the inverse the bear market definition, we consider Bitcoin to be in a bull cycle when it trades above its 200-day moving average for at least 30 consecutive days. Across nine completed cycles since 2014, Bitcoin rose an average of +130.5% from the start of each bull cycle to its peak, excluding the extreme 2015–2018 rally.