Key-Takeaways:
Altitude helps, but must be closely monitored to prevent overtraining. Focus on z2 and threshold intervals, with only recovery rides/rest days inbetween. No bunch rides, no tempo. Train by yourself to ensure steady effort. At a high level, once your z2 gets above 250w, 4 hours of focused zone 2 is more effective than 7/8 hours teetering between z1/z2/z5. More volume when preparing for grand tours. His riders ride 23-28 hours/week (he's said in other interviews that the split of threshold/z2 is about 20/80). 80g-100g carbs per hour are optimal at race level intensity, 2x-3x the guidelines from 2005. Carb intake for racing should be matched in training (he doesn't exactly say that it should be 100g/hr in training, but a good bet is at least 60-70%). Just like on the bike nutrition, off the bike nutrition should be matched to training load. Eat more on long days BEFORE the ride, eat less on off days.