Nate’s Israman race
How did Nate manage to hold an IF of 0.77 for over 6 hours with such low CTL? Perhaps his threshold was set lower than it should?
I ask because I have just competed in Challenge Madrid Gran Fondo Time Trial, a 180km individual hilly time trial with about 2800m of climbing. I followed traditional base, short power build, and century plans with additional aerobic time; hit a peak of 95 CTL a few weeks before the race (so an average of 665 per week) and a CTL of 88 on race day with 17 TSB. After reading the power meter handbook, combined with Best Bike Split I decided that a target IF of 0.8 would be challenging but achievable with a goal time of under 6 hours. I followed the BBS power targets to the T for the first 5 hours, and only faded a little bit at the end due to overheating so I ended up with an IF of 0.78 and a total time of 6:04 (moving time 5:58, had a dropped chain, dropped number, and stopped to remove by shoe cover because of the heat). So I placed well and I am very happy with the result!
But then I remembered that Nate had done a similar ride back in January 2017. I checked his ride in the TrainerRoad website and saw that he maintained an IF of 0.77. I looked at his TSS chart for the months before the race and he had done minimal training :S Should I have targeted a higher IF? I think the answer is no, because I almost blew in the final 20 km. So how come? Any thoughts?