Distance, climbing, and the hours you ride now are enough. The plan runs from today to event morning. You will see week 1 before anyone asks for a card.
Century Plan is not medical advice and is not a substitute for a physician, a coach, or a bike fit. Stop if you feel chest pain, dizziness, or pain that changes your pedal stroke. If you are new to riding, injured, pregnant, or managing a health condition, talk with a professional before you start.