EXTENSIVE RACE-POWER BIKE (the core session, and the most valuable transfer). Start the block at 3 × 25 min at goal race power with 5 min easy between, and extend toward 2–3 h of accumulated race-power work in one ride by the end. For a 250 W FTP athlete whose own race file supports it, that is about 200–210 W for a 70.3 bike split under 2 h 45 and 165–185 W for an Ironman. The power does not change across the block; the duration does.
LONG RUN WITH RACE-PACE SEGMENTS. 100 min: 30 min easy, then 4 × 10 min at 98–100% of goal race pace with 5 min at 85% between them, 15 min easy. For a 4:55/km goal that is 4:55–5:01/km with floats at 5:39/km. The float is a run, not a jog. Extend the segments to 4 × 15 min inside the same 120 min, then to 3 × 25 min at 130 min — and no further, because 150 min is the ceiling on any long run.
BRICK RUN AT RACE PACE. 20–30 min off the bike at 98–102% of goal run pace — 4:49–5:01/km for a 4:55/km goal. This is the session that tells you whether the goal pace is real. Do not run bricks at threshold: off-the-bike neuromuscular cost means a threshold brick delivers VO2max-level fatigue for threshold-level benefit.
SWIM RACE-PACE SETS. 5 × 400 at goal 1,900 m pace off 30 s, or 10 × 200 at 103% off 20 s. For a 1:40/100 CSS athlete, goal race pace is around 1:43–1:45/100 and the 103% set is about 1:41/100 — still under CSS.
BIG DAY (the triathlon form of Canova's special block). AM: 3 h 30 ride with 3 × 40 min at goal race power, which is two hours of race-power riding in one ride. PM: 45 min run with 25 min at goal race pace, written as a separate run hours later and not as a brick. Two or three of these in the whole block, 2–4 weeks apart. The big day replaces the week's other specific sessions rather than joining them, and is followed by four or five days with no quality work at all — Canova's own instruction after a large specific session is four to five easy days.
WHAT IS DELIBERATELY ABSENT: VO2max intervals, hill repeats, threshold running, and Canova's own run sessions. His 3 × 7 km at 103% with 1 km floats is 23 km including the floats, all of it specific. No triathlete carrying a bike load runs it.