You trained for months. Don’t let cramps ruin race day. The secret isn’t just water — it’s electrolytes, especially sodium. Understanding how to balance these key nutrients is crucial for peak performance and avoiding those dreaded mid-race cramps.
Electrolytes, particularly sodium, play a vital role in fluid balance, muscle contraction, and nerve signaling. When sodium levels drop too low, you risk cramps, fatigue, and even hyponatremia.
Heavy sweaters can lose over 1,000 mg of sodium per liter of sweat. Signs you need sodium support include salt streaks on your clothing and frequent cramps. A good rule of thumb is to consume 400–800 mg of sodium per hour for most runners.
Product Sodium (mg) Carbs (g) Best Use Price
| Nuun Sport | 300 | 7 | Pre-race hydration | Loading… |
| Skratch Labs Hydration Mix | 380 | 21 | Mid-race hydration | Loading… |
| SaltStick Fast Chews | 100 | 0 | Portable sodium boost | Loading… |
| Maurten Drink Mix 320 | 500 | 80 | Fueling + hydration | Loading… |