In recent years I had two custom ti bikes made, one geared, one fixed. Both have done 130+ miles in a day and 450-500 in a week. Both excel on less than perfect road surfaces using 24-25c tires (the fixed) and 24-28c tires (the geared) and are quite rideable when the pavement runs out though I do not seek that with these bikes. Both are all day comfortable though the fix gear is a lot harder and the lower, more forward position does take its toll. (But is a real blessing if I have to spend the next two hours going upwind.) These bikes are good enough rides that i see little change over the next few years.

Ben