Originally Posted by
hubcyclist
I'm not gonna say it's impossible to maintain 86% for 5hrs, but it's highly unlikely for me, I think!
I think you did extremely well to hold an IF 0.8 for 5 hours. I'm usually down in the low to mid 0.7s for that length of ride. I don't think I could get to 0.8 actually with an accurate FTP. Not for 5 hours solid.