For a 60 mile long Cat 5 race, I would guess, depending on terrain and your strength, somewhere between 2:45 and 3:30. If it's cool enough outside, you can get by on <20 oz per hour; if it's hot, plan on no more than 25 oz per hour. If the former, you may get away with two 750 ml bottles, if the latter try carrying a third bottle in a jersey pocket. You can also buy oversized bottles if you want to get away with just two in your cages.
While you may receive kindnesses from strangers -- I have been offered everything from cold beer to cold water by spectators at races -- don't count on them.
OP - I would take an extra bottle
Weather report is for overcast with highs below 60 deg, I think I'll probably be OK with 2 large bottles this w/e, but likely to have this issue all season... I guess it's another reason to join a team next year.
The unattached shall starve!!
Shallow genius, deep idiot.
As an aside, I think this was only the second time I made use of a feed in a race. The first was Sea Otter, which was a neutral feed (which was nice), and this race. My wife did a great job of handing me off a bottle, although I ended up not using it.
So they're supposed to space themselves out a few meters for the feed zone? Remind me to go off the front before then!
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike
Hope i wasn't the guy you were referring to at the San Luis Rey RR. I dont think you are, but i did run out of water on the last lap and had no feeder so i just held out my hand in the feed zone desperately hoping that someone would just stick a bottle in my hand and fortunately some angel of a lady did and i didnt die. Unfortunately i didnt have a chance to thank her at the end.