I'm starting to map out a training plan for a race in July of next year. Last year it took me 12.5 hours, and I'm shooting to shave a couple hours off of the time for this year.
I'm looking to do some periodization as per Friel's training plan. I'm basing this on a 350 hour/year (8 hour a week) plan.
Now, it seems like the plan is really based around shorter races, since it doesn't really mention getting in long hours closers to race day. I'd anticipate I'd need to be ramping up to 7-9 hour rides before the race. I understand the weekly training hours will increase during this phase, which is fine.
How do I adapt Friel's logic to an endurance racing plan, though? What part of the cycle should I adapt to have longer rides? Would this be done in the Base, or Build phases? What parts of that phase should I be removing in lieu of more hours being spend on the weekly long endurance ride?