Originally Posted by
patricio.montes
I have a 3l bag. We have here dry and warm climate. In summer time, doing marathons with no water provisioning points, besides the 3l bag I also carry a 1l bottle... and it's not enough. For this summer I must find the place in the bike to hold an extra 1l bottle. For short rides one 1l bottle is enough.
Actually, I take that back... Mine is a 2 liter bag. I remember now because I noted when I got it that it would hold as much liquid as a 2 liter bottle of soda. But yes, a 3 liter bag would be even better, because on some long, hot rides I've gone through two 24 oz. bottles and the 2 liters in my hydration pack.