Marathon sub-x times equivalent in FTP xW/Kg

Training
4

(disclaimer, if we use pure crude averages in conjunction with some fuzzy math from Coggan for 4w/kg and the various calculators and completely ignoring that cycling and running produce different VO2max values, I am not a scientist yada yada yada)

Cycling:

  • 5w/kg = ~75 VO2max ml/min/kg
  • 4w/kg = ~60 VO2max ml/min/kg
  • 3w/kg = ~45 VO2max ml/min/kg

Running:

  • 75 VO2max = ~2:15 marathon
  • 60 VO2max = ~2:45 marathon
  • 45 VO2max = ~3:30 marathon

This also assumes that your state of training between the two sports is roughly equal. There is no way I could go out and run a 2:15 marathon, but that probably represents a long term goal if I were to start running and commit for many years.

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