Jon Bond wrote:

On long rides, I take a 100oz bladder filled with water and a single
bottle filled with strong sports drink (from powder - I usually put
in about 125% what you're supposed to). Problem with sports drink in
a bladder is that the taste stays in there, as does the sugar - and
evil growing stuff loves that sugar.

Jon Bond

one thing that we've started doing on our really long "epic" rides is to
carry a backpacker's water filter. After AMB_ID, when we were right along
a river and running low, the light bulb went off.

penny