Originally Posted by
AbsoluteZ3RO
Ride...
66 miles isn't that much. You could achieve this by mostly just riding more. Intervals will certainly make you stronger, and a "plan" will probably make it achievable in a subscribed amount of time, but more than anything, get out there and do rides that you enjoy. Also, assuming your metric will be in a group, ride in some groups!
Isn't a metric century just over 62 miles?