How Much Should Cyclists Drink While Riding

Hydration Basics for Cyclists

Cycling hydration advice has gotten complicated with all the products and strategies flying around. As someone who used to think hydration meant chugging water before a ride and hoping for the best — ended up dizzy and weak during a summer ride despite drinking beforehand — I learned everything there is to know about how it actually works. Today, I’ll share the basics.

Why It Matters

Probably should have led with this section, honestly. Even mild dehydration — losing just 2% of your body weight through sweat — tanks your performance. Power drops, effort feels harder, everything suffers. On hot days you can lose 1-2 liters per hour. That adds up fast.

Before You Ride

Start hydrated. Sipping fluids throughout the day before a ride works better than chugging right before you start. Check your pee color — pale yellow means you’re good, dark yellow means drink more.

During the Ride

That’s what makes consistent drinking endearing to us who’ve experienced dehydration crashes — it prevents the problem before it starts. Aim for one bottle per hour in mild weather, more in heat. Drink by schedule, not by thirst. By the time you feel thirsty, you’re already behind.

Add electrolytes for rides over 90 minutes or in hot conditions. Plain water dilutes your sodium levels if you’re sweating heavily.

The Simple Approach

One bottle per hour minimum. Electrolytes when it’s hot or long. Drink before you’re thirsty. Most hydration problems come from doing too little, not too much. Start there and adjust based on conditions and how you feel.