My goal is two water bottles every 30 miles -- less if it's cool/wet; more if it's over 75F. I refill at convenience stores, fast food outlets, park ranger offices, private residences ... whatever comes along.
Having said that -- if it's one of my "normal" training rides of 70 miles, I'll manage with just two water bottles and no refill, going into deficit. If it's a 200k brevet, I'll shoot for my 2x30 goal and probably fall a little behind, on the longer brevets I really try to keep my consumption up. If I know that there are no water stops, like when I was biking in the desert in Mexico, I'll put two water bottles in my jersey pockets as well and drink those first.
Last edited by thompsw; 08-23-09 at 05:28 AM.