The U.S. Polo Assn. Palm Beaches Marathon returns December 12–13, 2026, with the 5K and 10K on Saturday and the marathon, half marathon, and relay on Sunday along Flagler Drive. Whether it’s your first half or your tenth full, you’ve put in months of work.
Now comes the part many runners get wrong: water. Too little, and you fade. Too much, and you can get into real trouble. This guide lays out a simple marathon hydration plan for race week, race day, and the day after, plus when a recovery visit may fit.
Table of Contents
Why Marathon Hydration Is Tricky in South Florida
December in Palm Beach is cooler than summer, but it can still be warm and humid by mid-morning. Humid air makes sweat evaporate slowly, so your body works harder to cool down.
Runners also vary a lot. Some sweat heavily and lose a lot of salt. Others barely sweat. That’s why one-size marathon hydration rules don’t work well. The goal is to learn your own needs.
Race Week Marathon Hydration
You don’t need to chug water all week. You need to be steady.
- Drink to thirst, plus a little. Keep a bottle with you during the day.
- Check your pee. Pale yellow is the target. Clear all day can mean you’re overdoing it.
- Keep salt normal. Don’t cut salt during race week, especially if you’re a salty sweater.
- Eat your usual foods. Race week isn’t the time to try new things.
- Sleep. Two good nights before the race matter more than the night before.
- Limit alcohol. Save the celebration for after.
Know your sweat
On a long training run, weigh yourself before and after, without clothes. A loss of a pound or two is common. Big losses mean you need more fluid on the run. Gaining weight means you drank too much. A sports doctor or coach can help you use this.
Race Day: Drink Smart, Not Max
- Before the start: A normal drink with breakfast, then small sips until the gun.
- On course: Drink to thirst at aid stations. Don’t force water at every stop if you aren’t thirsty.
- Electrolytes: Many runners use a sports drink or salt tabs on longer races. Practice this in training, not on race day.
- Gels: Take them with water, as your training plan says.
The danger of too much water
Drinking far more than you sweat can lower the sodium in your blood. This is called hyponatremia, and it can be serious. Warning signs include headache, nausea, confusion, swelling of hands and feet, and feeling worse even though you’re drinking a lot.
If you or a running buddy has these signs during or after a race, go to the medical tent or call 911. Don’t drink more water to “fix” it.
The Day After: Recovery Basics
The day after a marathon is for gentle recovery.
- Eat a real meal with protein and carbs within a few hours of finishing.
- Keep drinking, but follow thirst and your pee color.
- Walk a little. Light movement can ease stiffness.
- Sleep. It’s when your muscles repair.
- Skip hard workouts for at least several days.
Sore legs are normal. Severe pain, very dark or cola-colored urine, or very little pee are not. Those need a doctor right away.
When a Recovery Visit May Fit
Some runners plan a recovery visit for the day or two after a big race. If you finished healthy, feel okay, and are just struggling to catch up on fluids, our Athletic Recovery Drip gives fluids, electrolytes, amino acids, B-complex, and vitamin C. Some people prefer a simple Hydration Drip.
Neither will make you faster or heal injuries. They’re support, not a shortcut. You can read more in our athletic recovery IV guide.
Important notes for runners
- Not a substitute for the medical tent. If you feel unwell after the race, get checked on site.
- Competitive athletes: Anti-doping rules for tested sports limit IV infusions above a certain volume, unless done in a hospital or with an exemption. Check your sport’s rules before any IV.
- Screening first. At our physician-led practice in Greenacres, we check your health, medicines, and vital signs before any drip.
A Simple Marathon Hydration Plan
| When | What to do |
|---|---|
| Race week | Steady water, normal salt, good sleep |
| Night before | Normal dinner, normal drinks, no alcohol |
| Race morning | Drink with breakfast, then small sips |
| On course | Drink to thirst; electrolytes as practiced |
| After | Real food, steady fluids, rest |
| Day after | Light walk, keep hydrating, sleep |
Common Marathon Hydration Mistakes
- Trying something new on race day, like a new sports drink or gel
- Chugging water at every station whether you’re thirsty or not
- Skipping salt on a hot, humid morning if you’re a heavy sweater
- Celebrating with alcohol before you’ve rehydrated
- Ignoring warning signs like confusion or severe cramps
Your hydration plan should be boring and practiced. Race day is not the day to experiment.
Frequently Asked Questions
How much water should I drink during a marathon?
It depends on your sweat rate and the weather. A good marathon hydration plan is personal. Many experts suggest drinking to thirst and practicing your plan in training.
Can I drink too much water during a race?
Yes. Drinking far more than you sweat can cause hyponatremia, which can be dangerous. Watch for headache, nausea, confusion, and swelling.
Should I get an IV before a marathon?
It’s not needed for most runners. A steady hydration plan and sleep in race week are the basics. Competitive athletes should check anti-doping rules.
Can an IV help me recover after a marathon?
Some runners use a recovery drip to catch up on fluids after a healthy finish. It doesn’t heal injuries or replace rest.
When should I see a doctor after a race?
If you have severe pain, dark or cola-colored urine, little or no pee, confusion, or feel very unwell, get medical care right away.
Good Luck on Flagler Drive
You’ve done the training. Now trust your hydration plan, drink smart, and enjoy the finish line. If you’d like to talk through recovery after the race, book a visit with us. For more on heat and fluids, see our guide to IV hydration and Florida heat.
Book a private consultation or call (561) 363-5538.
Majestic Aesthetics · 5315 Lake Worth Road, Greenacres, FL 33463 · (561) 363-5538
This article is general education, not medical advice. Individual results vary. Consultation required. Not all patients are candidates.
Want to keep reading? Find more plain-English guides on our blog, or start with our IV therapy overview.
Related reading: Athletic Recovery IV Around Wellington and Boynton Beach · IV Hydration and Florida Heat: When It’s Worth Asking About · Magnesium in IV Drips: What It Does, What It Doesn’t, and Who Should Skip It
