I climbed up Via Bolognese to San Bartolo, which is the most user friendly part of the climb, with a maximum grade of around 7%. Just after where I turn off, it ramps up to around 10 to 12% for 600 vertical, which is not easy for me. Anyway, I turned off before the steep climbing, and descended / traversed / then climbed through Cercina to the Church above the town. I took the far right descent option (there are 4 options) which has become my favorite. Great descent down into Florence, then 5 or so kilometers through the city to return home. It felt great after the difficult weather yesterday. Check the link for all the information, but the summary is: 13.5 miles in 1:05 rolling time for an average speed of 12.4 mph with 1320 vertical feet of climbing at an average temperature of 58. Sweet!
Pian de San Bartolo, Cercina - nice quick ride by ridingwithcosimo at Garmin Connect - Details
Here are a few shots of some of my favorite parts of the road between Cercina
and the Church above the town, which marks the top of the climb.