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Block length.

Block length is the number of weeks the program spends building toward your peak before it restarts a new cycle. Set it in the Program tab → Training structure.

Allowed ranges depend on the stream:

  • Hybrid, Strength, Hypertrophy — 8 / 12 / 16 weeks. 12 is the canonical default.
  • Half marathon — 10 / 12 / 14 / 16 weeks. 12 is the canonical default.
  • Full marathon — 16 / 18 / 20 weeks.
  • Hyrox — 12 / 14 / 16 weeks.

Pick 8 (or the shortest available) for a fast restart or a near-term goal; pick 16+ for a longer build with more time to accumulate volume before sharpening. Changing block length re- phases the upcoming weeks on the next rebuild. The current week stays as prescribed.

Related
Race date and goal timeOn the marathon, half marathon, and hyrox streams, your Race goal sets a race date (times the peak) and a goal time (anchors race-pace work). Edited in the Program tab → Race goal.Hybrid balance sliderA 0–100 slider biasing the hybrid program toward strength or cardio. Hybrid stream only. The single biggest lever you have on what next week looks like.Strength focus (compounds vs accessories)Compounds-first vs compounds-plus-accessories vs balanced default. Drives where strength volume sits. Available on the Strength and Hybrid streams.
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