Build a big aerobic engine and a sharp top end at the same time with this Seiler style polarised 80/20 season builder for riders training 7 to 8 hours a week. Around 80 percent of your weekly time is easy Zone 1 to Zone 2 riding and around 20 percent is genuinely hard VO2max and threshold work, with almost nothing wasted in the grey zone between. Every ride is Zwift and indoor trainer compatible with power targets in percent of FTP, so it scales precisely to you.

WHO IT IS FOR. Cyclists who want a proven, research backed way to get faster on limited time and are ready to hold the discipline that makes polarised training work: easy days genuinely easy, hard days genuinely hard. It suits time crunched riders building toward a strong season, a gran fondo, a road race or simply a bigger, more durable engine. All you need is a smart trainer or power meter and a current FTP.

HOW IT PROGRESSES. Sixteen weeks move through four phases. Base weeks 1 to 4 lay a deep aerobic foundation with short VO2 and threshold primers. Build weeks 5 to 8 add hard four by four VO2 and threshold blocks. Peak weeks 9 to 12 stack the biggest quality on the deepest base. A sharpening Peak Two in weeks 13 to 15 hones the top end on fresh legs, then week 16 tapers into a final FTP test. Recovery weeks fall at 4, 8 and 12.

WHAT MAKES IT DIFFERENT. A true polarised distribution, not a soft pyramidal compromise. Two quality sessions a week are both genuinely hard while the rest stays honestly easy, the exact contrast the science shows drives VO2max and time trial gains. Every single ride carries a distinct, creative session design, a six part description, a pre ride cue and one verified academic reference, so you always know what you are doing and why.

WHAT TO EXPECT EACH WEEK. Two hard days, several easy undulating aerobic rides and a growing long ride at the weekend, framed by clear weekly notes stating hours and focus. You begin and end with a 20 minute FTP test so you can measure exactly what sixteen weeks of polarised training has built. Expect a higher FTP, a stronger finish on long days and the confidence that comes from training the way the best endurance athletes do.