Roy Owen said:
I'm and old CroMo guy, I have a '92 Bianchi Alfana set up for road (not
crit) racing. When I was in peak condition my farthest ride was 85
miles in just less than 5 hrs. Find a good (reputable) local bike shop
and explain to the owner what you want to do. They should be able to
set you up with a good fit. BTW I ride exclusively on sew-ups
(tubulars) in the long run they are cheaper than clinchers. They can
run at less (some what) than the recommended pressure and they don't
pinch flat. If you can afford titanium then go for it, otherwise stick
with CroMo for comfort.
Good news! In the last decade things have improved! You can now get
lighter bikes that will allow you to improve those times, and nobody has
to screw around with tubulars any more.