>>1057452I figured there's a dropoff in efficiency the longer you go above tempo pace (i.e. at race pace) so I reduced muscular efficiency to 19% to get a low estimate of 446 watts... Which gives me a ballpark ftp of 402 watts and a power to weight ratio of 7.2W/kg (or 6.39W/kg if you factor in the weight of a 6.9 kilo bicycle)