That's about what I go through (1.5L) on a metric century ride, unless it's the height of summer. Actually a little less. Two ~650ml bottles on the bike (
plus a double espresso somewhere along the journey 😁
.
Plenty for a few hours on the pedals.
I don't think I've ever downed 5+ litres on a ride of any length! How many times do you stop to pee?!?! 😯