Dogtrousers
Kilometre nibbler
They really are.The CC monthly challenges are great for upping your millage.
It's too late to join the Imperial Century one, I think that's quite a strict Jan-Dec challenge (but I could be wrong) but you can join the Metric one at any time of the year as long as you are committed to a metric century a month. (Miss a month, though and you're out til next Jan).