Multi-day ultra is won by how cheaply you hold a sub-threshold pace for hours — deep into fatigue, fueling the whole way — not by peak power. This collection takes pro methodology and filters it through the ultra-endurance science base AND through what actually works for people with jobs and families. Pros ride 25–35 hr/week; you don't, and you shouldn't try. For an amateur, a 12-hr week stacked on a 50-hr job often produces worse results than a well-structured 8. The win comes from structure and consistency, not volume.
Higher fat-burning at a given power spares glycogen — the most ultra-specific adaptation, built in Z2, exactly the volume an amateur can do.
Holding power without your thresholds collapsing after hours. Trained by working late in a long ride, not by huge daily hours.
You ride ultra at ~40–60% FTP, but a higher FTP means more speed at that same %. Built with two short quality sessions a week.
Absorbing 60–90 g carbs/hour is trainable and often the real race limiter. Rehearsed on every long ride — it costs zero extra hours.
- —~80% easy / 20% hard. Most riders waste time in the grey zone — avoid it.
- —Two quality sessions per week, never more; hard–easy–hard–easy, and protect the easy days as genuinely easy. A third hard day adds illness/injury risk without return.
- —One weekend long ride is the engine of the week — FatMax pace, full fueling practice. The second weekend day stays easy or off.
- —Back-to-back long days are a periodic block (every 2–3 weeks in a build), not a weekly habit — and never back-to-back intensity mid-week.
- —Long-ride length is 2–4 hr, up to 6 at peak — or target ~1500+ kJ rather than chasing hours. Late in a long ride power drifts down; that drift is durability training.
- —No flat zones: the FatMax and easy rides undulate — power ripples within Z2 plus cadence floats and pushes, and the long ride adds 15-sec micro-surges that keep fat oxidation intact while recruiting fast-twitch fibres. What drives the aerobic adaptation is total time in the zone, not whether it's one block — and real riding is intermittent anyway. Fuel 80–100 g carbs/hour, which also defends your late-ride sustainable power.
- —Still keep one genuinely long ride: the Durability Finisher stays continuous and goes late, because the non-linear drift of your sustainable power only shows up after hours of sustained work — that's the ultra-specific stimulus intervals can't fully replace.
- —Before a hot event, run a 1–2 week heat block (session 8): easy riding in extra kit so heat, not power, is the stimulus — a practical alternative to altitude.
- —Periodize: base (sessions 1, 6, 7 + one of 3/4 midweek, ~80% easy) → build (two quality midweek, rotating 3/4/5, + Saturday long; swap in the Durability Finisher every 2–3 wk) → race-specific (lengthen the Saturday ride toward your event's daily distance, add an occasional back-to-back Sunday, then taper).
- —Consistency over heroics — the rider who strings together steady 9-hr weeks beats the one who does a 16-hr week then gets sick.
Session formats drawn from documented pro practice (UAE, Abrahamsen, Simmons) and time-crunched coaching literature (CTS, Seiler's intensity-distribution research, RCA), retained only where they map onto peer-reviewed ultra determinants. Cross-checked against the Blocks knowledge base: the micro-surges that preserve fat oxidation while recruiting fast-twitch fibres, carbohydrate's defence of late-ride sustainable power, and heat adaptation are all grounded in current peer-reviewed evidence. Percentages are training-zone guides — set against your own FTP; on the longest rides ride by feel/HR. A training framework, not a personalized plan.