I just did my first 200k ride today as part of the Boston Brevet series. It was very well organized and everyone was very nice. I ended up with some lower back pain while riding, and some odd knee pain that went away as I went on, and existed before the ride. Anyway, with lower back pain, how much of it is avoidable and how much is normal? It wasn't debilitating by any means, but it also wasn't very comfortable. The longer events sound very intimidating to me, but if back pain were removed, it seems doable. Is back pain something that can get fixed, or am I just being wimpy? Up until this, I generally had done 30-40 mile rides, and the back pain never seemed to manifest itself. I have not had a professional fitting, and am kind of confused by the process, since every shop in the boston area seems to have multiple options and be really expensive. Thanks for any advice.