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Mastering Marathon Hydration: Experts Share Top Tips

Cold, Covid & Flu· 13 October 2026
Mastering Marathon Hydration: Experts Share Top Tips

Why Hydration Matters in a Marathon

Picture this: you’re cruising along in your marathon, the crowd is roaring, and then it hits you — a sudden wave of fatigue. More often than not, it’s not your training that’s to blame but your hydration strategy. Keeping your body fuelled properly is vital to running your best race.

Understanding Your Hydration Needs

Before we dive into what to drink, let’s consider your individual needs. Every runner is unique, and hydration isn’t one-size-fits-all.

  • Distance: Longer races require more careful planning.
  • Weather: Hotter days mean more sweat; cold days might trick you into thinking you need less.
  • Your Body: Factors like weight, sweat rate, and fitness level play a significant role.

What Should You Drink?

According to leading dieticians, here’s a breakdown of what to sip during your training and the big day itself:

Water: The Essential

Simple, yet vital. Water remains the cornerstone of hydration. Aim to drink water throughout your training, especially on long runs. A general guideline is to consume about 500-750ml per hour while running.

Electrolyte Solutions

For those longer runs (over 90 minutes), plain water won’t cut it. Electrolytes help replace sodium and potassium lost through sweat. Look for drinks that contain:

  • Sodium
  • Potassium
  • Calcium
  • Magnesium

Brands like High5 or Lucozade offer great options for a quick pick-me-up.

Sports Drinks: When to Use Them

Sports drinks are often packed with carbohydrates, making them suitable for those seeking energy during a marathon. Choose a drink with:

  • About 6-8% carbohydrate content
  • A blend of electrolytes

While they’re fantastic during races, try not to rely on them too heavily in training, as they can encourage unnecessary calorie intake.

Sample Hydration Strategy

Here’s a quick, effective hydration plan for race day:

  • Two hours before: 500ml of water
  • 30 minutes before: 250ml of an electrolyte drink
  • During the race: 150-200ml of sports drink every 30 minutes

Listen to Your Body

Remember, while guidelines are handy, your body will often tell you what it needs. Carry a bottle during your training runs. Practise your hydration strategy to see what feels best on race day.

As you prepare, don’t forget to check in with a nutritionist or dietician for personalised advice tailored to your specific needs. Running is as much about strategy as it is about heart!

Keep Hydrated, Keep Running

So, there you have it! Nail your hydration game, and you’re already a step above the rest. What’s your go-to drink when training? Let us know!

Category: Cold, Covid & Flu