For IM bike how often do you drink?
Every 15 minutes AND additional in between if thirsty on real hot days
Do you go by time ? Mileage ?
Time
Do you set your computer to notify time for drink?
No, just look at my watch

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David
* Ironman for Life! (Blog) * IM Everyday Hero Video * Daggett Shuler Law *
Disclaimer: I have personal and professional relationships with many athletes, vendors, and organizations in the triathlon world.

24oz x 2 to start then 24oz every aid station

I marked the aid station mile markers on my aero bars to drink in a regimented fashion to be ready for the refill. It was cold though in my last 140.6 so didn’t need a ton of liquids.

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https://www.strava.com/...tes/zachary_mckinney

As with the prior athlete, I drink my nutrition drink every 15 minutes; I drink straight water as needed, more in the early stages. I add a bite or two of food/gel every 30 minutes. I just use my watch -- it gives me something to do and something to look forward to.

I drink about a bottle (20 to 24oz) an hour. I live in Florida so train in the heat and most time that still leaves me a little dehydrated. I just put the Profile Design FC 35 on my bike to have a 35oz BTA to hold a little more.

I have my garmin beep every 8 mins to remind me to drink.

It really depends on how hot it is.

I've done IM races at around 100 degrees and IM races at around 50 degrees. Very different hydration requirements.

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Favorite Gear: Dimond | Cadex | Desoto Sport | Hoka One One

30oz/1L fluid per hour. No set intervals but generally every 20 min.

I drink a bit less the first hour purely to reduce bathroom breaks and because I can absorb more if needed while still on the bike.

Based on temp I’ll adjust as necessary.

By time, not distance (distance is unreliable due to hills, wind, etc......Alpe d'Huez is only 10mi.)

I set my watch with alarms (ever 15min.) so that I remember to drink. I'm trying to drink 1l/hr on the bike and will gulp down the rest of a bottle to stay on goal as I approach the next aid station, if needed.

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ECMGN Therapy Silicon Valley:
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You need to do a sweat test in conditions similar to what you'll be racing in to know how much to drink per hour. I usually set a reminder on my head unit to beep every 10 minutes to remind me to drink.