As most of you know, I ride double centuries, so riding a century is fairly easy and I see centuries (pretty much) as training rides for doubles.

The exceptions are centuries with 10,000 or more feet of climbing, those get my attention a bit more.

I just checked my notes and I've ridden 19 centuries in 2014, 4 of which were the first half of a double. Our local club (Los Angeles Wheelmen) has some funny rules about counting centuries anyway:

1. If you ride 90 miles or more, you can count it as a century.
2. If you ride a double century you can only count it as one century.

But . . . they do count centuries and a loyal club member (Gary) records everyone's centuries (in the club) by month, just in case anyone is curious. So those are their rules and I play by them.

My main club (OCRR) doesn't have any rules (and very few, if any, centuries) but I like it better for shorter rides; seems more friendly for one thing.

Rick / OCRR (and sometimes Los Angeles Wheelmen)

Edit: Oh, hang on, I forgot, I also ride centuries with the Orange County Wheelmen, but only those hosted by Chuck Bramwell (very friendly!) since they are billed as double century training rides anyway. So yes, very challenging, but fun!