In both 2017 and 2018 I have done the LV Century Specialty Plan after completing LV base and build, with similar goals of just getting faster on long outside rides. I really like the LV Century plan - challenging workouts but nothing intimidating after completing a sustained build, and the late plan VO2 workouts with 4 to 5 minute intervals around 110/115% are unlike anything in the LV base and sustained build plans which keeps things interesting.
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