From today's NY Times "Week in Review", the going in strategy was about 410 watts for 20 minutes (to get a "sizeable gap over the rest of the riders") and an average of 380 watts ("enough to keep him away from the competition for the rest of the day"). As I posted somewhere else, I'm the wrong example, at age 59 and weighing 138lbs, but one of my workouts is 1 minute 400-watt intervals with 5 min recovery, so both of Landis' power/duration targets are incredible!