Naturally, riders who are less fit or have limited time in the saddle will need to dedicate more time to prepare for a 100-mile ride (or the distance of your chosen event).
For those with some cycling experience, such as regular commuters or casual riders, we recommend setting aside at least 8 to 10 weeks for focused preparation—this is in addition to any prior base training you may have done.
We don’t have all the answers, and there’s no one-size-fits-all approach. You’ll need to tailor your plan to suit your own abilities and time. However, the guidelines below will give you a solid starting point.
That would average out as 7 Hours a week.
The above rides make up 3 sessions a week, and approx 7 hours of cycling, clearly you can do more, but build up gradually.