The current bull run for BTC started around the 6561 level and has peaked roughly at 102.2k. a partial retracement from the current leg will leave BTC around 9.6k - 9.5k, but if it were to pass this level we have a stronger support level at 9216. A full retracement from the beginning of the current bull run will leave BTC at best 8.1k; at worst - 7.7k. This would be a hard feat to accomplish as this would mean BTC would have to break 2 strong support levels of 9216 and 8281, which I believe will extremely tough to fulfill.