Holy crap, Zoo Hill.
On Saturday, we rode about 40 miles, starting at Redhook Brewery, down around Lake Sammamish, up Zoo Hill and back.
As Bicycle Climbs describes, Zoo Hill is: "arguably the toughest climb in the Seattle area. Ascending 1200 feet over 2.5 miles, it has an average grade of about 10%, with common gradients in 15% and some sections approaching 20%. This is not a climb to be approached lightly." One user described the climb as "the puke-inducing lactate-producing gasp-fest that I avoid unless taunted."
The fun part about going up a giant hill, is that you get to go back down. I PR'ed my fastest time yet coming down the other side at 43.4mph. Lets just say adrenaline was pumping hard at the bottom. The beer and food following the ride at Redhook were much appreciated (and necessary).