My 2008 goal is to do the UMCA Year-Rounder: One century or greater per month, for the full calendar year.

My problem is finding organized century rides in the Sea-Tac area for the months of January, March, November and December. I luck out with February because I can ride to/from the Bainbridge ferry and add 70 miles to the Chilly Hilly ride, getting a clean century out of it.

Anyone know of organized centuries for the months I listed?

The problem is your having to be pinned down to the local area, you may have to have some flex to your schedule by doing 2 in one month in leiu of 1 a month or travel down to the Willamette Valley or do an indoor century even if you organize it yourself. There are always things like the winter stagecoach century in Ca.
I try to match my travel commitments to link with a ride but all my family is in the Southwest, you could always adopt a few relatives. Good luck.