Electrolytes in Cycling

As a road cyclist, you know the feeling: after 3 hours in the Alps, you feel like a dried-up sponge. Your legs get heavy, your head pounds, and the last few kilometers become torture. The reason? Incorrect hydration. And yet, proper hydration when cycling is the difference between a successful training session and an early bail-out.

We cycle ourselves – and we know how frustrating it is when your body gives up due to a lack of electrolytes. That's why we created this guide: from a relaxed after-work ride to a brutal Alpine pass battle.

Why cyclists have a unique hydration challenge

When running, you immediately notice when you sweat. When cycling, the headwind disguises the actual sweat loss — at 30 km/h, sweat evaporates so quickly that your skin appears dry, even though you're massively losing fluids and electrolytes. Added to this are long periods of exertion (4-hour rides are normal in cycling), limited bidon capacity, and difficult mid-ride refilling logistics. This makes a consistent hydration strategy mandatory.

Sweat loss on the bike: The hard numbers

Your sweat loss varies between 500 and 1,500ml per hour, depending on temperature and intensity.

For every liter of sweat, you lose an average of 400–1,200mg of sodium, 150–300mg of potassium, and 10–40mg of magnesium.

Sodium is particularly critical: as a "salty sweater," you can lose 2,000–4,000mg of sodium on a 4-hour ride — equivalent to 5–10g of table salt.

Rule of thumb for fluid intake: Sweat loss × 0.8 — your body cannot absorb everything immediately; the rest is compensated through food and after the ride.

So, if you lose 1,000ml/h of sweat, you drink around 800ml/h, which is about 200ml every 15 minutes.

DRYLL Dosage: 1 stick per 500ml

DRYLL Sticks are designed for 500ml of water — this is the standard dosage for isotonic concentration and optimal electrolyte absorption.

Adjustments based on conditions:

• Hot days / heavy sweaters: 1 stick per 400ml for higher sodium concentration
• Cold days / relaxed tours: 1 stick per 600–750ml for more fluid volume with less salt requirement

Strategy by ride type

After-work ride (1–2h): 1 bidon with 1 DRYLL Stick (500ml), 2–3 sips every 10–15 minutes. Even on short rides, electrolyte loss begins immediately — DRYLL helps you replace electrolytes and fluid so you come home well-hydrated.

Granfondo (3–5h): Start with 2 bidons, pack extra sticks, and refill along the way. Remixt every 90–120 minutes. For long rides in summer, slightly increase the concentration (1 stick per 400ml).

Alpine Pass / Ultra (5h+): Pre-loading 30 minutes before the start (500ml DRYLL), both bidons filled, remix every 2 hours, 4–6 sticks in your jersey as backup. Immediately after crossing the finish line, another 500ml for recovery.

Indoor / Zwift: No headwind means 2–3x higher sweat rate than outdoors. Plan at least 1,000ml per hour, drink every 5–10 minutes. Slightly increase concentration (1 stick per 400ml) due to the high sodium loss rate.

Tips for on the go

Refilling on the go: First, water in the bidon (half a bottle), then add the stick, shake, and fill up. Warm water dissolves DRYLL better — at mountain springs, the trick with 1/3 warm, 2/3 cold water works perfectly.

Jersey test: Strong white crusts on your jersey after the ride = high salt content in your sweat ("Salty Sweater") → increase concentration.

Pre-loading: 2–4 hours before long rides, slowly drink 500ml of DRYLL.

Urine check: Light yellow = well-hydrated. Dark yellow or orange = not enough fluid consumed, stop training.

Weight check: Lost more than 2% of your body weight? You haven't drunk enough. For every kg lost, you're missing about 1,000ml.

Combine nutrition and electrolytes

It's best to separate electrolytes and carbohydrates: DRYLL in one bidon, carbohydrates (maltodextrin, sports drink) in the other. This prevents gastrointestinal problems at high concentrations and allows for independent dosing. Use caffeine gels separately 45–60 minutes before climbs or final sprints.

Why DRYLL for cyclists?

High Salt. Zero Bullshit. With 1,000mg of sodium per 500ml bidon, DRYLL provides significantly more than normal sports drinks (200–400mg/bidon) — and without carbohydrates, caffeine, or artificial sweeteners that can cause stomach problems on long rides. Just sodium, potassium, magnesium — in the right dosage for cyclists.

FAQ

How much to drink without thirst? Every 15–20 minutes, at least 150ml — thirst is a poor indicator when cycling because the headwind distorts perception.

Is there an upper limit? Theoretically yes: around 3,000–4,000mg of sodium daily (6–8 sticks). On long rides with high sweat loss, 4–6 sticks can be normal. Nausea or headaches can indicate too much sodium.

Does DRYLL help against cramps? Electrolyte deficiency can contribute to muscle cramps during long rides. DRYLL can help maintain electrolyte balance — best used preventatively. However, cramps have several causes (overload, position, dehydration) that electrolytes alone cannot solve.

How do I recognize good hydration? Consistent performance until the end, no headaches, light yellow urine after the ride, no muscle cramps.

CONCLUSION

Cycling places unique demands on your hydration — long duration, deceptive headwind, limited refill options. With DRYLL and a clear strategy, you'll ride longer, stronger, and reach your goal better.

Ready to ride? Pack your DRYLL Sticks and hit the road.