120 minutes and 1st hill climb

I skipped my workout on Saturday so I made it all up on Sunday. After watching Levi Lepheimer win the Tour of California Prologue, I felt pretty motivated so I hopped on the bike for 120 minutes. I believe I rode in 52x17 and 52x15 for the entire time. Doing 4x15 minute intervals at 52x15 with increase cadence for the last 5 minutes of each interval.
On President's day, I decided to go on the open road and do 3 sets of hill climbs just to see where my fitness level was at. I decided to climb the 10th Avenue hill starting at Noriega up to Pacheco. The Noriega to Ortega section is mild and a gradual incline but the Ortega to Pacheco climb is a leg breaker. I always have trouble with this part of the climb. My first attempt started well as I powered up to Ortega but right when the incline increased I had to get out of the saddle and throw my bike around. Dropped into a 52x19 or 52x21 to get up to the top and at the top I was gassed. I did it two more times and it got worse each time...at least I know where I stand and it isn't too good. But climbing 118 feet in a quarter-mile at the rate I was going at isn't too bad especially having been off the bike for 5 months. This Sunday I am going to try and climb it from Kirkham to Pacheco at least one time. That will be an almost 300 foot climb packed into .6 miles of road. Wish me luck.