I'm trying to plan ahead for Ironman Mont-Tremblant in August and I've been thinking a lot recently about changing my cassette to something more "hill friendly". I know many of you have done IMLP, IMCA, IMSG, and IMCDA. What gearing did you use? Did you wish you had more? Looking at the bike profile, most of the hills seem to be in the 4-7% range, though I see 1 section at 12%.
So far I've found that, if I ask 5 people, i'll get 5 different answers.
Currently I have compact cranks(50-34) up front, and 11-23 on the back, and my fitness is at about a 6hr bike split(+/- 15 min), on a flat course.
I've seen mentions of going anywhere from 11-25 all the way up to 11-28.
- Is 11-25 enough gears?
- Is 11-28 too many gears?
- Something in the middle?