I have been an cycle enthusiast from my school days and I got a merida scultra 901 road bike recently. However I am facing difficulties while I go over 60-70kms in a single go. Though i complete a 130km ride I end up getting a bad headache, neck pain and muscle cramps in my calf(when I rotate at high cadence).
In order to counter attack the neck pain, I did get a 60mm stem but the issue though mitigated has not resolved.
I'm 175 cms in height and I own a 52 cm frame size. I ride about 40 kms on my hybrid everyday without any problems.
Any info/guide for the above problems would be greatly helpful. Thank you.