I usually do most of my training indoors on the turbo and I race in about 3 or 4 TT’s per month.
I do the occassional outdoor group ride (2 a month) and I notice that on the flats and small inclines that I can easily hold power and maintain good speed.
However when the road rises up I feel that my indoor training hasn’t really helped as much as I thought it would. I get up hills ok but it feels harder than it should.
Most of these hills are not long. Perhaps 2 to 6 minutes and with gradients of between 5% and 14%.
It feels like my body just isn’t used to the hills. It kind of feels like slightly different muscle groups or parts of muscles are used more outdoors especially on hills, than when riding indoors.
Why is it so hard to replicate hill climbs on the trainer?
I am currently in a low volume build phase and my FTP is set at 305 but is probably a bit higher at about 315 right now. I weigh 79 kgs.