I did my first sportive today and, while it went pretty well for the most part, no crashes/mechanicals/heart attacks etc, and a time within the bracket I was expecting, I was plagued from about two hours in by a band of pain right across my lower back just above the waist. I also had a really stiff and sore neck.
Whilst getting a bit of relief from these was a simple matter of getting off the bike, trying to straighten myself out and walking around for a bit, this obviously affects your times.
I was wondering which particular part of my bike set up I should be paying particular attention to, to avoid it in future. Or should I just have a healthy portion of MTFU and accept that aches and pains are just part of the roadie experience? I don't get it on the short 1-2 hour road rides I usually do, nor on either of my mountain bikes.