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Build phase · intermediate · 8 weeks

8-week sustained power build plan

Base made you durable. This makes you fast. A base block raises how long you can go. A build block raises how hard. This one runs threshold intervals as the backbone, adds VO2 max work to lift the ceiling above threshold, and keeps enough Zone 2 in the week that you can absorb both.

Free, with no trial. Pick a start date and your training days; the sessions land on your own calendar. Switch or stop at any point. Every workout in it can be ridden without an account.

Weeks8
Rides a week4
Typical week5:30
Biggest week7:43

Week by week

EnduranceTempoThresholdVO2 max● Key session
W1Threshold returns
246

Week 1: 2×15 at threshold. Harder than sweet spot and it should feel it. Keep the endurance rides honest-easy.

W2VO2 enters
272

Week 2: 4×8 at VO2. These are pacing exercises — go out too hard on interval one and the set is over.

W3First peak
313

Week 3: the full threshold builder and 5×5 VO2 in the same week. The hardest week of block one.

W4Recovery week
131

Week 4: recovery. Take it fully — the second block is where the fitness actually appears.

W5Classic VO2
244

Week 5: threshold plus 4×4, the most studied VO2 session there is. Five minutes easy between efforts.

W6Volume and intensity
373

Week 6: 3×20 sweet spot, 4×8 VO2, and a three-hour ride. Sleep and eat like it matters, because this week it does.

W7Peak week
300

Week 7: threshold builder and 4×5 VO2. The last genuinely hard week of the block.

W8Sharpen and test
145

Week 8: openers and a test. You should arrive at the test feeling springy rather than fresh.

Every session is a real workout you can open and ride now. Starting the plan schedules all 32 from your chosen date, on the days you pick.
Start Sustained Power Build

Ride this plan if

  • You have just finished a base block and your event is 8–12 weeks out.
  • You can ride four times a week, six to eight hours.
  • You want threshold and VO2 work in a structure, not scattered across a calendar.

What you get out of it

  • Threshold intervals extended from 2×15 to a full threshold builder.
  • A block of VO2 max work — the fastest lever on aerobic ceiling.
  • Race-relevant power that a specialty plan can then sharpen.

How the plan is built

It is designed to be ridden after sweet spot base or a winter base block. Coming into it without that foundation is the most common way riders blow up in week five: the intervals are not harder than base intervals by a little, they are harder by a lot.

Eight weeks, four rides, one recovery week at the midpoint, and a retest at the end that also serves as the entry point to a specialty plan.

  • Two blocks of three loading weeks, split by a recovery week.
  • Two hard days a week — threshold and VO2 — never back to back.
  • The long ride stays in the plan. Build does not mean abandoning endurance.

Sustained Power Build: common questions

What is a build block in cycling training?

It is the phase between base and your event. Base builds aerobic capacity with high volume at low intensity; build converts that into power at and above threshold, with lower volume and much higher intensity.

Do I need a base block before a build plan?

Effectively yes. Threshold and VO2 sessions are only productive if you can recover from them, and recovery capacity is what base builds. Riders who skip base usually stall somewhere in week five.

How many hard days a week should a build plan have?

Two for most riders training six to eight hours, three at the very top end. This plan uses two, separated by easy days, because the adaptation happens in the recovery rather than during the interval.

What to ride after this

Training works in blocks. These plans pick up where this one leaves off.

Specialty · 12 weeks · 4 rides a week

Century Training Plan

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Gran Fondo Training Plan

Twelve weeks and five rides a week for a long, hilly event: endurance volume, sweet spot and threshold power, and dedicated low-cadence climbing work.

Specialty · 6 weeks · 4 rides a week

Criterium Sharpener

Six weeks of race sharpening: hard starts, 30/30 repeaters, Rønnestad intervals, and primers, for riders whose events are decided by repeated surges.

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