I used to ride in Kepong layang layang park on my speed p8 where there is a place with downhill followed by uphill (near main road with surpass a big longkang underneath), My "guesstimation" the steep around 15 meters and around 35-40 degree slope, i paddle like nobody business on 32T gear and 52T crank (my leg feel sore though

). As you claim you did 12km all uphill ride on 32T gear and 52T

, am i need to upgrade "myself" instead or upgrade the gear

or actually both at once ......
Guys i have issue with the saddle, normally it happen after 10km riding, my "underneath" ( not the guli pain yeah..

) start to feel pain, last few days I manage to clock 12km and guess what, my .... got brush-burn, i already wore cycling shorts and changed the saddle, and yet this happen....... any saddle expert here can share more information ? Or what should i do to eliminate this

I did that on the highest gear but it was on my normal pedalling force, so it was not hard but it takes me almost an hour to reach the almost 10 kilometers. To be fair, it is not really all uphill to Genting Peras, there are a few level stages but not for long. It is more important to maintain constant pedalling without the crank being too light. Too light you will be be like a dog swimming and this tires you out even faster!