Blue Hill Access Road is located in Massachusetts. It is 1369 meters long with an average gradient of 9.1% and a maximum gradient of 16.1%. Find similar hills.
Blue Hill is the real deal. This hill has long been a benchmark hill for Boston-area riders. Sub-5-minutes is considered very good. (According to solobreak, 5 minutes can be accomplished with a power output of about 5w/kilo. You can cruise through the first half, but you need to really crank it to get through the steep sections in the second half.