February 22, 2026 · 4 min read

Interval Workouts on a Smart Trainer — 5 Proven Sessions

A smart trainer is the ideal environment for intervals — no intersections, constant resistance, full control over power. Here are five proven session structures you can run at home, from 30 to 75 minutes.

Before you start

Intervals are expressed relative to your Functional Threshold Power (FTP). If you don't know yours, run an FTP test first — without it, intensities are guesswork. Start every session with 10–15 minutes of Zone 1–2 warm-up and finish with 5–10 minutes of cooldown.

1. Sweet Spot — the foundation of form

2 × 20 min @ 88–93% FTP / 5 min recovery. Total: ~60 min. The best ratio of effect to fatigue. Builds threshold endurance without excessive strain. Can be done 2–3 times a week.

2. VO2max intervals — short and sharp

5 × 4 min @ 106–120% FTP / 4 min recovery. Total: ~55 min. Raises your aerobic ceiling — your body's maximum capacity to process oxygen. Hard but short. Once a week is enough.

3. Over-Under — building lactate tolerance

3 × (3 min @ 95% FTP + 1 min @ 105% FTP) × 3 sets / 5 min between sets. Total: ~60 min. Alternating just below and just above threshold. Trains your body to handle accumulating fatigue — key for racing and group rides.

4. Tabata — when you only have 30 minutes

4 × (20 s max / 10 s recovery) × 2 sets / 3 min between sets. Total: ~30 min with warm-up. The classic HIIT protocol: 20 seconds full gas, 10 seconds off, repeat 8 times. Brutally effective — and brutally hard. Don't do it more than once a week.

5. Pyramid — varied pacing

1 min / 2 min / 3 min / 4 min / 3 min / 2 min / 1 min @ 100–110% FTP, with recovery equal to half the interval length. Total: ~55 min. Rising and falling interval lengths break the monotony and train your body across varied efforts. Good option when you need variety.

Which session should I pick?

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